All MOTOR B20 BUILD

[CIV16A]

HI Guys and Girls I'm in the middle of a B20 build and would really like to see some dyno results and some input from guys that have already done a built version with forged rods and pistons.

Just to add I am also using a sleeved B18c2 block.

[IV73CI]

So your using a b18 block with a stroker kit to bump up the extra 200cc?

Example b20b8
146kw on v1 e85 tune
Built top to bottom...

[hondapop]

Sounds like it's been sleeved out to a bigger bore size.

[CIV16A]

hey no ill be using a b18c block and it will be bored out to 86mm and ill be using a b20 crank, what are your thoughts on this?

[CIV16A]

So your using a b18 block with a stroker kit to bump up the extra 200cc?

Example b20b8
146kw on v1 e85 tune
Built top to bottom...

ill be boring the b18c2 block out to 86mm and ill be using a b20 crank

[gen2 CRX]

good choice on the b18c2 block that way you dont have to engineer the conversion, also will handle high rpm much better then a stock b20 block.

[CIV16A]

good choice on the b18c2 block that way you dont have to engineer the conversion, also will handle high rpm much better then a stock b20 block.

what other advantages come from using a sleeved b18c2 block that you know of?

[gen2 CRX]

If your doing a naturally aspirated build there is no need to use forged pistons and rods.. Use the stock b18c crank and rods as the stoke is shorter (more reliable for the high rpm power range of vtec). The b18c also has a girdle which reinforces the main caps causing less stress on the block.

[IV73CI]

good choice on the b18c2 block that way you dont have to engineer the conversion, also will handle high rpm much better then a stock b20 block.

I can rev to 10,000rpm if its tuned for it, but yet again depends on what your trying to achieve - power or reliability or both..

My b20 is built frm top to bottom... Lots of torque across the entire rpm range!

[IV73CI]

If your doing a naturally aspirated build there is no need to use forged pistons and rods.. Use the stock b18c crank and rods as the stoke is shorter (more reliable for the high rpm power range of vtec). The b18c also has a girdle which reinforces the main caps causing less stress on the block.

If u have the budget, mite aswell change to stronger rods while its apart and get ARP bolts..

U want a strong motor that will last not a motor that will crack the block apart... :)

[CIV16A]

I can rev to 10,000rpm if its tuned for it, but yet again depends on what your trying to achieve - power or reliability or both..

My b20 is built frm top to bottom... Lots of torque across the entire rpm range!

I would like a balanced motor, built to withstand a few runs down the strip and Id also like to do a few track days.

[CIV16A]

If u have the budget, mite aswell change to stronger rods while its apart and get ARP bolts..

U want a strong motor that will last not a motor that will crack the block apart... :)

That's what I had on mind, do it once do it properly I guess, I'll be using Cp 13:1 pistons and Eagle h beam rods.

[gen2 CRX]

i was stating the advantages of stock b18c vs stock b20 block. If your going to build the bottom end, the only advantage is that you can register the b18c2 into and EG in NSW without engineering apart from that.. if the b20 is built properly it will be as reliable.

[CIV16A]

i was stating the advantages of stock b18c vs stock b20 block. If your going to build the bottom end, the only advantage is that you can register the b18c2 into and EG in NSW without engineering apart from that.. if the b20 is built properly it will be as reliable.
Thanks for that, wouldn't the b18c block be more reliable though?

[TODA AU]

I would like a balanced motor, built to withstand a few runs down the strip and Id also like to do a few track days.

Why the 86.0mm bore?

[TODA AU]

Thanks for that, wouldn't the b18c block be more reliable though?

Advantage is girdle & cooling jets.
B18C crank also has a bearing advantage.

[IV73CI]

That's what I had on mind, do it once do it properly I guess, I'll be using Cp 13:1 pistons and Eagle h beam rods.

Thats the spirit!!

Mines only 11.3.1 CR.
Mods list: rods, itr pistons,Acl race bearings, cnc machine chambers, balanced bore, arp bolts, worx oil pump, pr3 itr head, supertech valve train, stage 2 camshaft, adj cam gears etc etc etc,

The list goes on and on and on and on and on lol...

Motor has proven track records and a few drag runs...

Goes as hard as my c0ck...:p

[gen2 CRX]

Thanks for that, wouldn't the b18c block be more reliable though?

stock vs stock yes.. but you can build b20s to be reliable

[IV73CI]

i was stating the advantages of stock b18c vs stock b20 block. If your going to build the bottom end, the only advantage is that you can register the b18c2 into and EG in NSW without engineering apart from that.. if the b20 is built properly it will be as reliable.
No doubt!! Wurrrdddd! :)

[IV73CI]

If you need guidance speak to one of the fellaz who have experience in these builds ;

Adrian, Dyno Dave, BYP boys etc etc

Im sure they can direct u to the righteous path ..

Hellelujah!! Amen!!

[CIV16A]

Why the 86.0mm bore?

My honest answer would be to squeeze more power from it, unless there is a better way of getting it using the standard 84mm bore.

[CIV16A]

If you need guidance speak to one of the fellaz who have experience in these builds ;

Adrian, Dyno Dave, BYP boys etc etc

Im sure they can direct u to the righteous path ..



Hellelujah!! Amen!!

thanks I do have some guidance from one of the following, although i would like to get more advice and other peoples thoughts and opinions.

[CIV16A]

Thats the spirit!!

Mines only 11.3.1 CR.
Mods list: rods, itr pistons,Acl race bearings, cnc machine chambers, balanced bore, arp bolts, worx oil pump, pr3 itr head, supertech valve train, stage 2 camshaft, adj cam gears etc etc etc,

The list goes on and on and on and on and on lol...

Motor has proven track records and a few drag runs...

Goes as hard as my c0ck...:p

hahahah nice one :)

So what kind of power are you making with that setup and has it given you any troubles, would you say it's reliable?

[CIV16A]

If you need guidance speak to one of the fellaz who have experience in these builds ;

Adrian, Dyno Dave, BYP boys etc etc

Im sure they can direct u to the righteous path ..

Hellelujah!! Amen!!

I dont think BYP have ever BUILT a B20 they where using Daves engines

[ALLMTR996]

If your doing a naturally aspirated build there is no need to use forged pistons and rods.. Use the stock b18c crank and rods as the stoke is shorter (more reliable for the high rpm power range of vtec). The b18c also has a girdle which reinforces the main caps causing less stress on the block.

Can you provide me with 100% proof that the B18c stroke can rev higher than a 89mm or larger stroke engine and make the engine live longer the engine IV73CI has now was turned to 9600+rpm and its still running like the day it was built.

[Benson]

Looks like you'll be spending at least 15-20k on just motor and bolt-ons

With that kind of budget, put it towards a built K-series. You'll be running rings around the B20vtec

[Benson]

I dont think BYP have ever BUILT a B20 they where using Daves engines

Yeah your right. Cause i dont recommend a highly built B20 to anyone. Most people jump straight over to K-series. Unless your a die-hard B-series fans, please do more research

[gen2 CRX]

Can you provide me with 100% proof that the B18c stroke can rev higher than a 89mm or larger stroke engine and make the engine live longer the engine IV73CI has now was turned to 9600+rpm and its still running like the day it was built.

Can you provide me with 100% proof that it will live just as long or longer then a 87mm stroke engine? I have no doubt that if his engine is well built it runs like the day it was built.. Stock vs stock the b18c is more reliable for vtec.. Honda de-stroked for a reason.

[IV73CI]

hahahah nice one :)

So what kind of power are you making with that setup and has it given you any troubles, would you say it's reliable?

it is reliable ..i use it as my daily ..no problems yet.. seems stable and goes strong as you put your foot down!


I dont think BYP have ever BUILT a B20 they where using Daves engines

yeh tru but they were exposed to alot of DD expertise and advise during the build & run in etc.. (correct me if im wrong) :)

[IV73CI]

Can you provide me with 100% proof that the B18c stroke can rev higher than a 89mm or larger stroke engine and make the engine live longer the engine IV73CI has now was turned to 9600+rpm and its still running like the day it was built.

Aw shiett the Honda Mafia has entered the room ... lol

She still runs like it just had a rebuild done ... apart from all the rattles in the car due to the Hasports mounts ..she is fairly quite and screams when you push it..

i like tities :)

[IV73CI]

Looks like you'll be spending at least 15-20k on just motor and bolt-ons

With that kind of budget, put it towards a built K-series. You'll be running rings around the B20vtec

**** benny i want a k series now ..u let me down homie! LOL ahha jkz..

[CIV16A]

what lap times would your EG be doing if you spent the same money on gear ratio's, wheels/tires and aero upgrades that you have on your K powered eg?

YES i would have gone K and will do down the track but with the offer that has been made for this engine gearbox deal you could not even do a STD K24 swap.

[ALLMTR996]

Can you provide me with 100% proof that it will live just as long or longer then a 87mm stroke engine? I have no doubt that if his engine is well built it runs like the day it was built.. Stock vs stock the b18c is more reliable for vtec.. Honda de-stroked for a reason.

The only thing the B18c has as an advantage is the girdle I have a B18aVtec race engine your more than welcome to come and pull it apart after 4 years of IPRA racing countless trackdays
this has the same oil pressure as the day it was built.What I have seen an understand your point of view in STD from yes I would say you are right but built as a race engine with different clearences and balanced correctly its a different story.

[Benson]

what lap times would your EG be doing if you spent the same money on gear ratio's, wheels/tires and aero upgrades that you have on your K powered eg?

YES i would have gone K and will do down the track but with the offer that has been made for this engine gearbox deal you could not even do a STD K24 swap.

No where near the K- powered EG. There is alot of variable you need to take in account. Our latest built car doing 1:03.0 around Wakefield with a K24 naturally aspirated says it all.

[CIV16A]

Ok not to be rude but can we drop the b vs k stuff, i posted this thread to gain more knowledge and information on building a b20 thanks

[IV73CI]

^^^back to OP,

B20vtec if built right = reliable, torquey, goes vtakk hard! Lol

B18c stroked to 2.0L = reliable, goes vtakk hard, clears defects.. Hehe

Fck defects, if u dont drive like a hoon on the streets and have engineers u shouldnt have any issues.

Just make sure you build your motor to the specs its going to last you and be reliable all rounder.

Its like putting a horse in the boot of a car.. If it doesnt fit or the space is maxed out - just dont push it any harder. Coz if u do, you will weaken the walls of the engine block.

Example: a dy16y4 1.6L motor was built from bottom to top for turbo spec, stroked to 1.7L for reliability and to make the engine last. Stroking to 1.8L was going to be unreliable due to watever reasons at the time. Get my drift/vtakk yo? Lol

Thats my two cents for this post.. :)

Also.. Since this is a b18 block stroking for a B20 build then the title should be B18 strOked to 2.0L vtec build. Heheeh

[CIV16A]

^^^back to OP,

B20vtec if built right = reliable, torquey, goes vtakk hard! Lol

B18c stroked to 2.0L = reliable, goes vtakk hard, clears defects.. Hehe

Fck defects, if u dont drive like a hoon on the streets and have engineers u shouldnt have any issues.

Just make sure you build your motor to the specs its going to last you and be reliable all rounder.

Its like putting a horse in the boot of a car.. If it doesnt fit or the space is maxed out - just dont push it any harder. Coz if u do, you will weaken the walls of the engine block.

Example: a dy16y4 1.6L motor was built from bottom to top for turbo spec, stroked to 1.7L for reliability and to make the engine last. Stroking to 1.8L was going to be unreliable due to watever reasons at the time. Get my drift/vtakk yo? Lol

Thats my two cents for this post.. :)

Also.. Since this is a b18 block stroking for a B20 build then the title should be B18 strOked to 2.0L vtec build. Heheeh

Cheers mate thanks for the information

[Slaz]

As Adrian said, why a 86mm, its a 1 life block then, go 85mm, at 1 mm, the power difference would be not that much in capacity lost and then you have 3 builds from the block sleeving you have just forked out for. I have some parts that would probably suit your build, so if your still looking for bits, PM me.

[bregs]

ive got a b18 sleeved and bored to 84mm revs to 8500 made 150.5kwatw on e85 run in tune (ran out of air need itbs)

[IV73CI]

ive got a b18 sleeved and bored to 84mm revs to 8500 made 150.5kwatw on e85 run in tune (ran out of air need itbs)

Dats some nice figures man..

Mine made 155fwkw with dodgy test cai pipe. Lol.. And a cracked sleeve.. Lol

[bregs]

Dats some nice figures man..

Mine made 155fwkw with dodgy test cai pipe. Lol.. And a cracked sleeve.. Lol


now that's nice figures!

[IV73CI]

now that's nice figures!

Thnx bruz,

Shame i cbf rebuilding her..

Decided to go a diff path.. So i hope i can get close figures to it.

Oh she was a b20vtec all motor build. Ex track/drag car..Which previously made over 160+fwkw ..

Wish i had more life out of her.. All it needs is another block.., balancing and other bits here and there then shell be back in the road..

[bregs]

save time ahaha buy mine

[IV73CI]

save time ahaha buy mine

Would be nice..

But im staying away from franks or built motors..

[jdmTYPE R]

how is this reliable if it cracked a sleeve?..build b20 with a stock block isnt reliable...seen so many with my own eyes
my lsvtec motor made 152 on pump gas with skunk2 intake manifold cam setting at 0deg, couldnt be bothered to play with the cam setting as the car was sold....this was done on bels dyno which every 1 knows its a low reading dyno.
we will see what it really makes once i get back into racing this motor is sitting in my shed all packed away.

[Bludger]

subscribed.

I like b20's

[ALLMTR996]

STD sleeve B20's are fine as long as there tuned by someone with engine building knowledge that understands what cracks the sleeves my own 13 to 1 comp B20 15,000klms on the road with 5 track days I have now sold it and its fitted to a friends EK.