CL9 06 Euro TB +IM MOD+ P2R gasket Done. Video pg 4.

[felixd]

Whats the max size i can bore out from the stock TB off the 06 euro ? , will porting out the In Manifold make a hug difference aswell ?
thanks guys

[Chris_F]

Whats the max size i can bore out from the stock TB off the 06 euro ? , will porting out the In Manifold make a hug difference aswell ?
thanks guys

If your throttle body is 60mm, the most you can safely bore it to is between 63-64mm.

If you are running a bored/larger diametre throttle body it is really important that the inlet of the manifold is matched to the throttle body diametre. Since a perfect port match is almost impossible to achieve, it is better for the opening of the intake manifold to be slightly larger than throttle body itself. This will ensure there is no ledge or lip to disrupt the airflow.

[felixd]

If your throttle body is 60mm, the most you can safely bore it to is between 63-64mm.

If you are running a bored/larger diametre throttle body it is really important that the inlet of the manifold is matched to the throttle body diametre. Since a perfect port match is almost impossible to achieve, it is better for the opening of the intake manifold to be slightly larger than throttle body itself. This will ensure there is no ledge or lip to disrupt the airflow.

i thought so ,
kool thanks yeah ive opened up the TB and found out that tb and the IM were 60mm i think ill leave as it is cuz did sum research abt the tb porting if not done properly idle problem will occurs :)

cheers

[Chris_F]

i thought so ,
kool thanks yeah ive opened up the TB and found out that tb and the IM were 60mm i think ill leave as it is cuz did sum research abt the tb porting if not done properly idle problem will occurs :)

cheers

Yep they are 60mm. You're right, it's really important to bore the throttle body properly. The intake manifold is less important to get perfect.

I recently bought a 64mm 2006 TSX throttle body, and just finished port matching the opening of the intake manifold to match. I might post some pictures if I get a chance :)

[felixd]

kool pm me pics as i found we could use the acura tl one also hehe

[Chris_F]

the rear side of the 2006 tsx throttle body that connects to the intake manifold. You can see some marks left by the 2006 tsx throttle body gasket. For this throttle body to fit on an 03-05 car you'll need an 03-05 throttle body gasket. You can see why in the picutres below.

http://img20.imageshack.us/img20/1373/img0959g.jpg

http://img20.imageshack.us/img20/7293/img0958r.jpg

I ported the opening to about 64.5mm. It's important to mount the throttle body after porting to ensure there is no "lip" or "ledge" that will disrupt the airflow. You should also try to be conservative with the amount of material you remove. While there is a lot of material for the first 10mm but you have less to work with beyond that point.
http://img20.imageshack.us/img20/599/img0956r.jpg

it's also important to blend your port so there is a smooth transition into the intake manifold. There should be no sudden change in diametre and no ledges or lips.
http://img20.imageshack.us/img20/2909/img0962pil.jpg

I took my time doing this and removed small amounts of material at a time. It's a good idea to take it steady if you're new to it. It took me an hour or two using a die grinder and a carbide bur that looks like this:

http://www.carbide-burs.com/carbide-bur-540.jpg

you can also use a flapping sanding wheel on the end of a drill to do some finishing touches and smooth things off a bit:

http://www.axminster.co.uk/images/products/202360_l.jpg

[BEE18C]

Very interesting thanks for the photos and tips:) just a question about removing the electronics from the TB, any precautions i have to take note of when removing these?? your help would be much appreciated:)

[Chris_F]

I only ported the intake manifold and didn't touch the throttle body. So there was no need to remove any of the electronics from the throttle body.

The 2006 TSX throttle body is 64mm which is 4mm larger than the 60mm accord euro throttle body. So basically I just removed a 2mm thick circle of material from the intake manifold.

The opening of the manifold needs to be the same size or larger than the throttle body otherwise the air will hit a ledge.

[felixd]

yaeh i mite just do a smoothing at the IM opening cuz i found that its got a very rough internal thanks for the pics Chris

[jyh888]

is there much gain to be achieved from this mod?

[felixd]

JTSO from US forum have done this mod and with I/H + other things with stock cat 10 hp gain. if not done correctly you'll messed up the idle

[integral90]

Good to see you got it all done Chris! That guy's a pretty good seller eh?

I'm really excited for yours results when all this gets fitted and tuned. Lucky for you you'll only need to swap the 2nd half of the RBB to that ported version, the part that connects to the head is a POS.

So... RBB-R :D

[felixd]

integral hows ur car doing now ? :)

[integral90]

integral hows ur car doing now ? :)

It's doing alright, still going :p

I stopped updating my build thread out of spite for my internet because twice I wrote up 600+ word posts and it froze. Since my last update though the intake + TB have been done. I also swapped to JDM DC5R flywheel and Exedy HD Sports Clutch.

If it's around 12 degrees or below the car will lose traction in 1st even on very grippy tarmac :) I'm about to buy coilovers now and then start the long tedious process of saving for a stand alone ECU :(

How is your car doing, man? PM me if you don't want to hijack this thread with me :p

[felixd]

Does the butterfly flap need to be replaced if the TB enlarged ? this is so tempting ill keep you guys posted . hmm should i do or not do :(

[BEE18C]

Just want to find out if anyone has actually taken their TB to get it bored out by a engineering firm, reason I'm asking is I would like to bore my 05 TB out but unsure of the Fly by wire electronics on the TB, are they easy to take off the TB???:)

[Chris_F]

Just want to find out if anyone has actually taken their TB to get it bored out by a engineering firm, reason I'm asking is I would like to bore my 05 TB out but unsure of the Fly by wire electronics on the TB, are they easy to take off the TB???:)

From what I've read, it's possible to bore the throttle body without having to remove any of the electronics. Your best bet would be to find a decent machining place and just ask them. Maybe print off the pictures I posted to show them what the throttle body actually looks like.

[aaronng]

Does the butterfly flap need to be replaced if the TB enlarged ? this is so tempting ill keep you guys posted . hmm should i do or not do :(

You need a new larger butterfly flap. The machining place should be able to get you one easily. Worst case, they can punch one out of a sheet of metal.

[BEE18C]

From what I've read, it's possible to bore the throttle body without having to remove any of the electronics. Your best bet would be to find a decent machining place and just ask them. Maybe print off the pictures I posted to show them what the throttle body actually looks like.Cheers thanks for that:)

[felixd]

Im doing the mod this week will let you guys posted

specs will be 65MM TB opening / 64 mm Bottom.
IM port to match TB.
with P2r thermal gaskets :) .

[integral90]

Im doing the mod this week will let you guys posted

specs will be 64MM TB opening / Bottom
IM port to match TB
IM Runners port to match the gasket

Do the opening to either 64.5mm or 65mm. That way if you go to a TSX TB in the future there won't be any flow issues.

I also wouldn't bother doing the runners to match the intake ports. It will mess up the whole flow of the RBB in my opinion and it's pointless because of the smaller runners before that part

[Chris_F]

Guys... I'm having a lot of trouble getting off the bolt that holds the bracket. I spent about a couple of hours on it tonight and it just won't budge.

The bolt I'm talking about is #22 in the picture below.


http://img12.imageshack.us/img12/68/boltm.gif

[felixd]

Do the opening to either 64.5mm or 65mm. That way if you go to a TSX TB in the future there won't be any flow issues.

I also wouldn't bother doing the runners to match the intake ports. It will mess up the whole flow of the RBB in my opinion and it's pointless because of the smaller runners before that part

oh ok will do :) thx integral

[felixd]

Guys... I'm having a lot of trouble getting off the bolt that holds the bracket. I spent about a couple of hours on it tonight and it just won't budge.

The bolt I'm talking about is #22 in the picture below.


http://img12.imageshack.us/img12/68/boltm.gif

hmm i use the ratchet and small extension and bang :) try to push the radiator a lil bit towards you and squeeze ur hand its pretty tight down there :)

[felixd]

heres the part before the job :D stock size TB opening 60mm / bottom 60mm

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33411.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33421.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33441.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33451.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33461.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33491.jpg

The ports will be cleaned as the surface is very rough

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33471.jpg

The ports will be clean as its durty and rough

[felixd]

update
tb opening bore out maxed bottom is cleaned up and i just be safe only enlarged by 62mm hehe cuz didnt want to irritate with the idle issue later on n the intake manifold injector base port match n clean the rbb runner cleaned up hopefully the breathing of the car will be smoother n better

[Chris_F]

hmm i use the ratchet and small extension and bang :) try to push the radiator a lil bit towards you and squeeze ur hand its pretty tight down there :)

you should have seen how much force was required to remove that bolt on my car. My hands are bloodied and bruised now.

Somehow the bolt had calcified and seazed onto the block. The bolt was all white and crusty.

4 hours later everything is finally installed.

2006 TSX throttle body
2006 TSX intake arm
64.5mm port matched RBB manifold

:thumbsup:

[felixd]

you should have seen how much force was required to remove that bolt on my car. My hands are bloodied and bruised now.

Somehow the bolt had calcified and seazed onto the block. The bolt was all white and crusty.

4 hours later everything is finally installed.

2006 TSX throttle body
2006 TSX intake arm
64.5mm port matched RBB manifold

:thumbsup:

:) kool hihi as im nearly done with mine
specs
TB opening 66mm - bot 62mm
Ported match IM + P2r Injector base gasket
Cleaned up RBB IM
still to come p2r gasket for the IM + TB gasket :(

here sum pics

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33511.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33501.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33521.jpg

http://i583.photobucket.com/albums/ss271/felix_d/IMG_33541.jpg

thats all for now folks

[Chris_F]

:) kool hihi as im nearly done with mine
specs
TB opening 66mm - bot 62mm
Ported match IM + P2r Injector base gasket
Cleaned up RBB IM
still to come p2r gasket for the IM + TB gasket :(

here sum pics

thats all for now folks

Nice work!

Who ported your throttle body? It looks like they did a pretty good job of it :thumbsup:

I took my car for a quick test drive and you can actually feel a difference - the engine definitely breathes a lot easier now :)

[integral90]

How is it Chris? Louder VTEC crossover?

[felixd]

Nice work!

Who ported your throttle body? It looks like they did a pretty good job of it :thumbsup:

I took my car for a quick test drive and you can actually feel a difference - the engine definitely breathes a lot easier now :)

Racing Project (Melbourne) excellent workshop :)

[felixd]

UPDATE:

The In- manifold installed back temporary without thermal gasket yet . and TB install back without thermal gasket nor the OEM gasket LOL temporary but will install tonight .

the car idles fine no engine light wohoo, sound of the engine is smoother and quiter believe it or not but its true. The acceleration pedal is very responsive. The take off even more smoother and torqueir. + tested not at WOT. vtec sound is a tad bit more louder than stock i cant explain it. Meh who cares

thanks boys for the support and i will update for the last time for this thread once everything goes in to normal. cheers

Felixd

[Atjo]

Will your car be ready for the dyno this sunday? :)

[felixd]

Will your car be ready for the dyno this sunday? :)

yup should be ok ill let u know by saturday night :D

[integral90]

Really interested to see what you'll pull... really, really interested.

Can you write down your exact mods including brands in here for everyone so when you post the dyno figures they get some idea?

[felixd]

Really interested to see what you'll pull... really, really interested.

Can you write down your exact mods including brands in here for everyone so when you post the dyno figures they get some idea?

yes it will be done for u :) no prob but heres the list of mods im running

- Typhoon K&N CAI
- buddyclub catback
- TB by pass mod
- TB enlarged mod + thermal gasket
- IM port mod + thermal gasket

Everything else stock

[integral90]

yes it will be done for u :) no prob but heres the list of mods im running

- Typhoon K&N CAI
- buddyclub catback
- TB by pass mod
- TB enlarged mod + thermal gasket
- IM port mod + thermal gasket

Everything else stock

I estimate 120kW with good midrange :)

[Chris_F]

^ I would estimate a bit less. I'm going with 117.3kw LOL

[aaronng]

On which dyno? :p

[felixd]

Update
i've to run without the IM runner thermal gasket and TB thermal gasket hasn't showed up in my mail yet :(

after cleaned up everything and ive decide to run with stock gasket for the TB + IM runner at the moment. start up the car and took for test drive the jumpy idle is not there anymore. idles smoothly n also very quiet. 2nd gear pull WOW i feel the difference with VSA on the car still want to pull :). Vtec engagement more clear

overall this mod i would recommend for euro owners its really worth it. :)

[felixd]

OK the car produce 111.8kw LOLS :D on Mainline Dynolog Chassis dynamometer. I have no clue what is the figure showing is but im happy with what ive got and did. oh if you guys can tell me if its good or bad as ive attached the dyno result below

http://i583.photobucket.com/albums/ss271/felix_d/IMG_38081.jpg

http://www.youtube.com/watch?v=3sC0lQW4Ndk - Felix dyno 1
http://www.youtube.com/watch?v=EBCH7TPgiPc - exhaust view vtec !!! wooho

http://www.youtube.com/watch?v=q6hTJH2Nzxs- Kit dyno 1
http://www.youtube.com/watch?v=QOL23-iQ5Ic - Kit's dyno 2

[kitbkk]

^^ very nice man.



the list of mods im running

- Typhoon K&N CAI
- buddyclub catback
- TB by pass mod
- TB enlarged mod + thermal gasket
- IM port mod + thermal gasket

Everything else stock
considering you dont yet have header and cat installed.. the TB and IM enlargement polish makes the car breath a lot better. I remember my car only pulling 109kw with injen intake, header (ebay) and fujitsubo exhaust..

BTW you got video of my car you taped as well? hehe

[aaronng]

OK the car produce 111.8kw LOLS :D on Mainline Dynolog Chassis dynamometer. I have no clue what is the figure showing is but im happy with what ive got and did. oh if you guys can tell me if its good or bad as ive attached the dyno result below

[IMG]http://i583.photobucket.com/albums/ss271/felix_d/IMG_38081.jpg[IMG]

http://www.youtube.com/watch?v=3sC0lQW4Ndk

What was your reading before you did the intake manifold and TB bore?

[kitbkk]

^^ Aaron, I dont think Felix did before dyno.
I also got my car dynoed with Felix today..It pulled 129.7KW..
I think this dyno reads about right though.. I had my car dyno tuned end of last year at another place and it pulled 127.3KW..

[integral90]

lol @ your torque graph; numbers are a bit high!

112kW is fine man, as has been discovered, (depending on the quality,) headers on the Euro heed anywhere between around 6-10kW atw. The gain would be larger again for you because you have a higher flowing intake manifold compared to the stock car. Cat would be another gain as well, probably around 2-3kW atw. So averaging it out, with header and cat you'd gain ,with assumed averages, around 10kW atw.

So that's roughly 122kW right there. But so many things affect the dyno, man. What rims do you have? What tyre pressure do you run?

I hope the power is being held back by the stock header/cat and not the fact that you port-matched the RBB. I think port-matching the RBB is going to work against you

[Chris_F]

OK the car produce 111.8kw LOLS :D on Mainline Dynolog Chassis dynamometer. I have no clue what is the figure showing is but im happy with what ive got and did. oh if you guys can tell me if its good or bad as ive attached the dyno result below

http://www.youtube.com/watch?v=3sC0lQW4Ndk

That's quite a big difference to kits figure of 129kw

What process did you follow to port match the manifold to the head of the car?

If the ports of the manifold are bigger than the ports of the head you'll create a ledge that will disrupt the airflow. Have you taken off the front part of the manifold and had a look/feel into the part of the intake manifold that bolts to the head?

A catback exhaust usually doesn't add much power. So I would say with the intake you'd be making 5-6kw more than stock car.

[felixd]

^^ very nice man.


considering you dont yet have header and cat installed.. the TB and IM enlargement polish makes the car breath a lot better. I remember my car only pulling 109kw with injen intake, header (ebay) and fujitsubo exhaust..

BTW you got video of my car you taped as well? hehe

yesh ive uploaded :D

[felixd]

That's quite a big difference to kits figure of 129kw

What process did you follow to port match the manifold to the head of the car?

If the ports of the manifold are bigger than the ports of the head you'll create a ledge that will disrupt the airflow. Have you taken off the front part of the manifold and had a look/feel into the part of the intake manifold that bolts to the head?

A catback exhaust usually doesn't add much power. So I would say with the intake you'd be making 5-6kw more than stock car.

the manifold were match to the gasket so i assume its match the head not bigger than the head :) i believe. oh one more to add my car steering wheeel shudders at 100km/s or more aswell. will that effect the dyno ? im on 18"s.

[Chris_F]

the manifold were match to the gasket so i assume its match the head not bigger than the head :) i believe. oh one more to add my car steering wheeel shudders at 100km/s or more aswell. will that effect the dyno ? im on 18"s.

Sometimes the gasket won't line up perfectly when you have it off the car. If you have some free time I think it might be worth checking that there is no ledge or misallignment between the intake manifold, gasket and head.

If the wheel shudders it sound like your wheels aren't balanced properly? You might lose power to the vibrations.

[felixd]

kool will do once my other gasket arrives :D hopefully today

[Atjo]

Lucky i didn't dyno my car yesterday :) i knew that my figure will be way below you guys hehe

[felixd]

Hmm will mix petrol effect on the result aswell cuz when i fill up there still had sum of ron95 on the car and i just top up with ron 98 LOL wooopssss

[integral90]

the manifold were match to the gasket so i assume its match the head not bigger than the head :)

That's the problem right there; you made it too big. The thermal gaskets actually get squashed a bit when they get sandwiched between the IM and the head. I know my P2R gasket's openings are considerably bigger than the RBC's ports, but sits a lot more flush when the RBC is tightened onto the head. Still, there is more power held back in the exhaust than unport-matched IM/intake ports

[felixd]

That's the problem right there; you made it too big. The thermal gaskets actually get squashed a bit when they get sandwiched between the IM and the head. I know my P2R gasket's openings are considerably bigger than the RBC's ports, but sits a lot more flush when the RBC is tightened onto the head. Still, there is more power held back in the exhaust than unport-matched IM/intake ports

hmm when i match with my stock gasket and place it on the head its as big as the head it self. aswell as the ported IM.

[Chris_F]

^ when you take off the front part of the intake manifold, shine a torche down just to make sure there is no ledge anywhere. If there's no ledge or lip, there's nothing to worry about

[felixd]

^ when you take off the front part of the intake manifold, shine a torche down just to make sure there is no ledge anywhere. If there's no ledge or lip, there's nothing to worry about

yup did that when i reassemble there's no ledge or wad sover im 100% sure + i stuck a wire making sure theres no ledges. hmm still waiting for my gaskets :( well maybe the car was on mix petrol so that would cause low reading im guessing and shudder wheels

[felixd]

Ok guys at last the mod is done just added the P2r TB thermal gasket and IM gasket injector base. took it for a drive for 15 minutes and outside temperature is 12degree. When i touched the manifold i oready can feel the heat is reduced. :D

Induction Mod done :)

[integral90]

Ok guys at last the mod is done just added the P2r TB thermal gasket and IM gasket injector base. took it for a drive for 15 minutes and outside temperature is 12degree. When i touched the manifold i oready can feel the heat is reduced. :D

Induction Mod done :)

Good work man! How does the car drive now? Traction gone in 1st?

[felixd]

first gear spinnsssss n second too :) the euro luvs the cold air

[Jakeee]

thats mint as mate good work

[felixd]

hopefully more bolt on mods coming :D . when the times come ill b upgrading the test pipe cat and headers and i really really really want hyundaita

[aaronng]

My car is stuffed. I couldn't feel a difference when I put on the P2R gasket.

[felixd]

My car is stuffed. I couldn't feel a difference when I put on the P2R gasket.

wad do u mean ur car is stuffed ? i think theres not many gain by the gasket just reduce the temp of the intake i guess .

[aaronng]

wad do u mean ur car is stuffed ? i think theres not many gain by the gasket just reduce the temp of the intake i guess .
stuffed = shit. Hehehe

[integral90]

My car is stuffed. I couldn't feel a difference when I put on the P2R gasket.

Yeah, whatever!

"Hey look at me; I'm Aaron! My car is stuffed! *said as he laps Wakefield in 1:17"

[aaronng]

Yeah, whatever!

"Hey look at me; I'm Aaron! My car is stuffed! *said as he laps Wakefield in 1:17"

Why do you think it is stuffed? hhahaha.

That's all right, I still lose out to 15.4.

[hooyn]

how does a gasket affect performance exactly.. ?

[aaronng]

how does a gasket affect performance exactly.. ?

Supposed to prevent heat from being conducted from the head to the intake manifold.

Some people swear by it, some people swear at it when something goes wrong. And most people think it is a waste of money (placebo effect). All I know is.... I stripped the damn stud when I was installing mine, so I am at the swear at it category.

[felixd]

PS when installing note that don't over tight the bolts :) oh aswell i think the car needed to have the oil catch can install cuz in the manifold area ive notice after ive clean the IM up there still major oil splashed up there i think it will be agood idea to install one.

[jyh888]

can the tsx throttle body fit the rbc without any issues? and how about fitting an existing injen cold air intake?

do i need any mods to fit the rbc? thx

[integral90]

can the tsx throttle body fit the rbc without any issues? and how about fitting an existing injen cold air intake?

do i need any mods to fit the rbc? thx

TSX throttle body fits RBC no problem except that you need to block off the idle bypass. There's not a chance in hell your Injen would fit, as I barely made the stock intake arm fit with an exposed pod, the positioning is just too different.

To fit the RBC you're best to get a new IM gasket and as said before, a new intake arm.

[felixd]

as per integral said u need to find the correct intake arm for da RBC and i think u ll need to hack sum of the piping off to fit

[integral90]

and i think u ll need to hack sum of the piping off to fit

DON'T DO THAT! I hacked one of the coolant/breather hoses and now I can't fit the RBB back on (believe me I tried) :(

It's best to either replace the hoses when you swap to RBC or just deal with the extra slack

[Chris_F]

if you want to use the RBC with the stock intake, gruppeM intake, mugen intake or any other intake that makes use of the stock rubber intake arm the solution is simple. Buy the intake arm from the euroR :) It's actually a very cheap part - About US$30

[jyh888]

if you want to use the RBC with the stock intake, gruppeM intake, mugen intake or any other intake that makes use of the stock rubber intake arm the solution is simple. Buy the intake arm from the euroR :) It's actually a very cheap part - About US$30

would you be able to tell me where i can purchase the euro r intake arm? and does any1 know the diameter size of the RBC IM? is it also 60mm or larger? if i bore the stock throttle body to 64mm, will the rbc also need to be port matched?

what intakes have ppl been using with the rbc?

and which gasket/s will i need to fit the rbc and a bored stock tb, im driving an 08 euro and at the same time might purchase a p2r tb spacer, does any1 know where is the best place to source these?

thanks guys

[jyh888]

was just searching ebay and there is a tsx throttle body for about $250 AU landed, apprently the 05 is only 63mm not 64...?

is it worth buying for that price and will it be straight bolt on, any mods needed? or better off jus boring the stock tb?

what r ur opinons?

[craze]

would you be able to tell me where i can purchase the euro r intake arm? and does any1 know the diameter size of the RBC IM? is it also 60mm or larger? if i bore the stock throttle body to 64mm, will the rbc also need to be port matched?

what intakes have ppl been using with the rbc?

and which gasket/s will i need to fit the rbc and a bored stock tb, im driving an 08 euro and at the same time might purchase a p2r tb spacer, does any1 know where is the best place to source these?

thanks guys

http://www.ozhonda.com/forum/showpost.php?p=2101809&postcount=565
If you check there it says the throttle body is 62mm. Its probably best if you bore the rbc matching the stock throttle body. My friend is using injen with the rbc. The rest i'm not quite sure sorry...

[jyh888]

http://www.ozhonda.com/forum/showpost.php?p=2101809&postcount=565
If you check there it says the throttle body is 62mm. Its probably best if you bore the rbc matching the stock throttle body. My friend is using injen with the rbc. The rest i'm not quite sure sorry...

thanks, if you dont mind me asking how did your friend fit his injen intake onto the rbc? i heard there are fitment issues in positioning...do you mind taking some photos please thx

[integral90]

would you be able to tell me where i can purchase the euro r intake arm? and does any1 know the diameter size of the RBC IM? is it also 60mm or larger? if i bore the stock throttle body to 64mm, will the rbc also need to be port matched?

what intakes have ppl been using with the rbc?

and which gasket/s will i need to fit the rbc and a bored stock tb, im driving an 08 euro and at the same time might purchase a p2r tb spacer, does any1 know where is the best place to source these?

thanks guys

They enlarged the throttle body in the 06+ TSXs, none before then. The opening to the 06+ is 69mm and after butterfly it's 64.5mm. The inlet to the RBC, as Justin wrote, should be over 60mm, so around 62mm sounds right, so yeah it's worth port matching the RBC if you get it.

I am running a custom intake with the RBC, and I really doubt anybody could run one made for the RBB with it. The only gasket worth getting is an IM thermal gasket. You need to get one off the Civic Si, as that came with an RBC-equipped K20 engine.

Just to let you know... you might be very dissappointed with the RBC and the results you get from it. If you're not planning to do a stand-alone tune and cams down the track then steer clear of RBC and just bore your RBB.

[craze]

thanks, if you dont mind me asking how did your friend fit his injen intake onto the rbc? i heard there are fitment issues in positioning...do you mind taking some photos please thx

i'll try to take some pictures and i'll ask how he fitted the injen on :thumbsup:

[craze]

They enlarged the throttle body in the 06+ TSXs, none before then. The opening to the 06+ is 69mm and after butterfly it's 64.5mm. The inlet to the RBC, as Justin wrote, should be over 60mm, so around 62mm sounds right, so yeah it's worth port matching the RBC if you get it.

I am running a custom intake with the RBC, and I really doubt anybody could run one made for the RBB with it. The only gasket worth getting is an IM thermal gasket. You need to get one off the Civic Si, as that came with an RBC-equipped K20 engine.

Just to let you know... you might be very dissappointed with the RBC and the results you get from it. If you're not planning to do a stand-alone tune and cams down the track then steer clear of RBC and just bore your RBB.


When you say dissappointing can you abbreviate on that? If i had done all the bolt on mods would this improve the results of the rbc?

[integral90]

When you say dissappointing can you abbreviate on that? If i had done all the bolt on mods would this improve the results of the rbc?

Because the RBB manifold is actually a very well-designed and well-suited part to the Euro's characteristics. It is designed for mid-range torque and when people say "it sacrafices top end" for that, it doesn't, because they're speaking about builds where they plan to rev to 8000rpm+ (way out of the RBB's league). The RBB is almost perfectly suited to the Euro's redline, VTC gears and hunger for air, as Chris F has proven that with a bored RBB and bigger throttle body you can make huge mid-range gains and hold good peak power for a while.

The only place you'll lose power with an RBB compared to an RBC is in the early revs up to about 3800rpm and after about 6500rpm. That 2700rpm chunk in the middle is the most important of the whole rev range, though, so the benefit is gone.

This is of course with the standard ECU with its standard VTC settings, because that too has been set up for the RBB's longer runners. I have confidence that with stand alone tuning (the ability to do VTC) and increase the redline the RBC could be as good-a-performer as the RBB with stock cams, but with the ability to rev higher (assuming the cams and valvetrain could).

I speak from experience though as I've done every bolt on and the RBC, including a header and exhaust with more flow than most being run on Euros and a larger TB.

At the end of the day though, the RBC (and the similiar RRC) are very, very good parts. I mean Honda wouldn't put them on the Type Rs if they weren't. But you can't bolt a part from a completely different engine such as the K20A onto a K24 and expect its stock tuning, cams, VTC etc. to take kindly to it. :p

/endbitchsession

[Chris_F]

^ great post.

"You must spread some Reputation around before giving it to integral90 again."

[craze]

Thanks for clearing that up !

[jyh888]

Because the RBB manifold is actually a very well-designed and well-suited part to the Euro's characteristics. It is designed for mid-range torque and when people say "it sacrafices top end" for that, it doesn't, because they're speaking about builds where they plan to rev to 8000rpm+ (way out of the RBB's league). The RBB is almost perfectly suited to the Euro's redline, VTC gears and hunger for air, as Chris F has proven that with a bored RBB and bigger throttle body you can make huge mid-range gains and hold good peak power for a while.

The only place you'll lose power with an RBB compared to an RBC is in the early revs up to about 3800rpm and after about 6500rpm. That 2700rpm chunk in the middle is the most important of the whole rev range, though, so the benefit is gone.

This is of course with the standard ECU with its standard VTC settings, because that too has been set up for the RBB's longer runners. I have confidence that with stand alone tuning (the ability to do VTC) and increase the redline the RBC could be as good-a-performer as the RBB with stock cams, but with the ability to rev higher (assuming the cams and valvetrain could).

I speak from experience though as I've done every bolt on and the RBC, including a header and exhaust with more flow than most being run on Euros and a larger TB.

At the end of the day though, the RBC (and the similiar RRC) are very, very good parts. I mean Honda wouldn't put them on the Type Rs if they weren't. But you can't bolt a part from a completely different engine such as the K20A onto a K24 and expect its stock tuning, cams, VTC etc. to take kindly to it. :p

/endbitchsession

thanks integral, that was a great write up and i really appreciate your time. Im aiming towards a better torque curve rather than high peak power as i hardly reach 6000+rpm on the roads anyway, at most i will be tracking the car every now and then which wont really require such high rpm. I think ill take ur advice and stick with the rbb and larger tb. Did you use a tsx tb? may i ask where you sourced it from and how much? and where can i get it bored? dont really want to do it myself as im scared ill stuff it up, if u dont mind doing it for me, i can pay u :P

[integral90]

thanks integral, that was a great write up and i really appreciate your time. Im aiming towards a better torque curve rather than high peak power as i hardly reach 6000+rpm on the roads anyway, at most i will be tracking the car every now and then which wont really require such high rpm. I think ill take ur advice and stick with the rbb and larger tb. Did you use a tsx tb? may i ask where you sourced it from and how much? and where can i get it bored? dont really want to do it myself as im scared ill stuff it up, if u dont mind doing it for me, i can pay u :P

No problem, man. I got the 06+ TSX throttle body from America and Chris F got his from the same guy. http://stores.shop.ebay.com/OEM-Imported-Engines__W0QQ_armrsZ1

I got mine from him for about $230AUD. If you get an 06+ one you won't need to get it bored as it should be able to flow more than enough air for the stock cams. When I bought my RBC the inlet had already been port-matched to the same 64.5mm as the TB.

I've never really done any port-matching or boring myself, but you can always do what Chris F did and buy a spare RBB manifold and do your work on that one. If you really want me to try and give you a hand you can always come around to mine and we can have a go at it (as long as you've got tools and you've undone the bottom bracket for the RBB) :p

If the car is only going to see the track a few times then yeah, RBB would be more than sufficient. If you're planning (later on) getting stand-alone tuning and tracking the car more, the RBC might be a good option as it does give you better throttle response than RBB. But from what it sounds like you want to do, RBB is (as said before,) perfect

[exquisit]

just wondering, how does a bigger tb effect low down torque and fuel economy??