which turbo for a b18c2?

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06-03-2008, 10:32 AM
fatboyz39

vote for GT30R
06-03-2008, 12:12 PM
Weq

Quote:

Originally Posted by TEGZOTIC

yeah your right the .86 has way 2 much turbo lag if your not planing on running more than 20psi. the gt30 .64 is a better option but reason i didnt chose that is because i would have top go high mount of the 180, which would get me defected in 5seconds,lol but im pritty happy with the 2871,, but should have chose a lower rear aR.

Yeh did u get the t04e 4" compressor cover too? We were running 20psi on my friends, making around 250kw. I used to like driving it, it wasnt all that bad above 5000rpm. Was run to drive. It just had nothing below, and no partial throttle boost. gaahhh. I mad the mistake too. i used a T3 based GT2871R on my civic, .64A/R. Same problem, no partial throttle boost and the power it made just didnt justify the lag.
06-03-2008, 04:01 PM
TEGZOTIC

Quote:

Originally Posted by Weq

Yeh did u get the t04e 4" compressor cover too? We were running 20psi on my friends, making around 250kw. I used to like driving it, it wasnt all that bad above 5000rpm. Was run to drive. It just had nothing below, and no partial throttle boost. gaahhh. I mad the mistake too. i used a T3 based GT2871R on my civic, .64A/R. Same problem, no partial throttle boost and the power it made just didnt justify the lag.

nah i got the 3" comp cover.. boosts at around 4krpm,, anything below that and its basicaly on zero,lol so yer a fair bit of lag,, i know ppl spooling up at the same rpm with gt30's..
but im quiet happy with the power its making. hondas should boost a bit faster as there high compression engines. but its not like you can run a lot of boost on high comp..
thats y i say big turbos are useless unless your going to be boosting in there efficency range which is usualy 17psi+.
13-03-2008, 12:22 PM
Weq

Quote:

Originally Posted by TEGZOTIC

nah i got the 3" comp cover.. boosts at around 4krpm,, anything below that and its basicaly on zero,lol so yer a fair bit of lag,, i know ppl spooling up at the same rpm with gt30's..
but im quiet happy with the power its making. hondas should boost a bit faster as there high compression engines. but its not like you can run a lot of boost on high comp..
thats y i say big turbos are useless unless your going to be boosting in there efficency range which is usualy 17psi+.

Its a good point, but remmber that compression and VE of a motor has an impact on compressor efficeny of the turbo ;)
13-03-2008, 12:39 PM
string

Quote:

Originally Posted by Weq

Its a good point, but remmber that compression and VE of a motor has an impact on compressor efficeny of the turbo ;)

It might change the operating points but it doesn't change any characteristics of the compressor.
18-03-2008, 01:34 PM
Weq

Quote:

Originally Posted by string

It might change the operating points but it doesn't change any characteristics of the compressor.

Yes true. My bad. I guess i was trying to express that each engine will repond differently to a turbo. And depending on the flow map, the air comming out of a GT35 at 10psi may surpass the efficency/cfm of a GT28 at 18psi. So even though its not in its peak efficeny band, it still more efficent at lower boost then a smaller turbo at higher boost.
24-04-2008, 11:56 AM
anster

Quote:

Originally Posted by TEGZOTIC

Hey guys

im in the planing process of turbocharging my dc2 integra (b18c2), and have no clue on which turbo 2 chose as i dont no any ppl personaly that have turbocharged a integra. my goal is to have a good quartermile time , and not exactly try and be king of the dyno.

ill b running stock internals so max boost will be 10psi. currently looking into the t28bb of the jap spec s15. What do you guys think of the t28 ,, or is it better to go for a t3? keeping in mind i dont want to be waiting for boost to kik in for 10 years.

thanx for the help guys
Nemz

i reckon u should just go for a disco potato turbo, they are good for response and u won't get any lag, they are basically a t28 high flowed.
26-04-2008, 12:26 AM
Bludger

Quote:

Originally Posted by TEGZOTIC

planz changed and never got around 2 turboing the dc2...
now driving a 180sx with a gt2871r 0.86..
i definatly wouldnt recomend a massive turbo on a honda tho. its useless. you will have huge turbo lag, and unless your boosting to 17psi min your not in the efficiency range. and i doubt many ppl will be doing that here as your all high comp.

your car lags cos sr20's run low compression

running a big turbo on Hondas you will get less lag cos its a high compression engine....

off boost, there is virtually no lag
30-04-2008, 02:43 PM
TEGZOTIC

yeah thats true but i can run a lot more boost then a honda can because of the compression. unless you can afford c16 fuel or something so it doesnt detonate;)

and yes once your ofboost you are LAGING , thats what lagging is... sr20's arnt that bad of boost,,, they just seam slow ass when you compare when boosting..
personaly i dont care about lag so much anymore,, iv totaly changed my setup now.. forged pistons, gtk550 turbo, ect ect, aiming for an easy 300rwkw's ,,, so lag is a must but dont realy care as im buiding it for drag\street purposes.
30-04-2008, 02:48 PM
Limbo

Quote:

Originally Posted by Bludger

your car lags cos sr20's run low compression

running a big turbo on Hondas you will get less lag cos its a high compression engine....

off boost, there is virtually no lag

don't forget to factor that an SR20 is a 2ltr engine and a b18 is only a 1.8 Ltr.

It makes abit of a difference again, just comparing my b16 to another b18
30-04-2008, 03:51 PM
string

Quote:

Originally Posted by TEGZOTIC

and yes once your ofboost you are LAGING , thats what lagging is... sr20's arnt that bad of boost,,, they just seam slow ass when you compare when boosting..
personaly i dont care about lag so much anymore,, iv totaly changed my setup now.. forged pistons, gtk550 turbo, ect ect, aiming for an easy 300rwkw's ,,, so lag is a must but dont realy care as im buiding it for drag\street purposes.

You are confusing LAG with BOOST THRESHOLD. Lag is the TIME it takes for you to build boost once you plant the throttle. Boost threshold is the engine RPM at which you build boost.

Sadly 99% of the world doesn't know the difference.
30-04-2008, 04:00 PM
Weq

Quote:

Originally Posted by string

You are confusing LAG with BOOST THRESHOLD. Lag is the TIME it takes for you to build boost once you plant the throttle. Boost threshold is the engine RPM at which you build boost.

Sadly 99% of the world doesn't know the difference.

This turbo provides both in ample quantities.

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