i have an LS and i've been ls/v turbo twice before but i'm planning on doing b20/vtec turbo this time around. How much hp can the sleeves handle on pump gas, 91-93 octane. i'm looking to make 400+. i'm planning on running eagle rods and je pistons, probably 9:1ish compression with a stock b16a2 head. I'm thinking of running a sc61 turbo. Does this sound doable? i was thinking well, if i'm gonna sleeve a motor i might as well do it 84mm and well b20 is already that, so if i have pistons i can reuse them later on down the road. Any advice? i've never gone b20/v before so advice and suggestions would be nice.

btw as far as sleeves, i meant later on down the road.

 

you can my 400 on stock sleeves but it not going to hold up long on a b20 block . me personelly . id run about 10lbs and make about 300 for a daily driver. you need a very good tune to keep that block in good shape. gather your parts fast just incause you motor does go down.so fare as reusing pistons and rods ask your machine shop , you might get lucky and not have to buy the all over again gl

 

so what you're saying is that block is really that weak? in that case i just go ls/vtec again because the ls block can hold 400whp without sleeves. i plan on daily driving it with like 220ish hp, maybe like 6psi and on race day i want 400whp. that's how i ran my cars previously, i just wanted a lil more torque this time around without bumping up compression. oh well. any other experiences will be good but it seems like i may be steering away from the b20 block

 

If your looking to crank up the boost on stock sleeves, go with the LS/Vtec. LS is easier to sleeve too if you eventually go that route. I'm plan on building a B20 Vtec, but an All-Motor setup. Just can't trust a B20 Vtec boosted setup.

 

i appreciate the input, but why? has anyone gone b20/vtec turbo and pushed the limit? i've had two 400whp ls/vtec's but i was thinking about going b20 this time around and it seems like a no-go but has anyone done it?

 

Its all luck I'd say. It might hold it might not but more than likely the b20's sleeves will give. Just Google B20 turbo there is alot of threads out there about it. Even here on honda-tech. Some will say that their b20 turbo's been running strong for three years now and others will say don't do it it will fail.

 

I've seen a post on here a few months ago of a shop that got 592 to the wheels on Stock Sleeves. I've also seen people run 250ish and have problems. Getting the block sleeved actually seems to only improve your chances of something going wrong unless you get it sleeved by Golden Eagle.

Do some looking on HT, what I learned was for every success story, there was failure. And at best 50% odds is not going to work for me if I want to put together a 500 WHP machine, especially if I'm going to spend 5K+ on it.

As for the success of the build, people argue which is the more important, but the fact remains, you have to get the correct build, the person to build it right, a good tune, and luck. If you can't nail all 4 of those, it's not going to work.

I wanted to do a Boosted 500 WHP B20 Vtec myself, but after doing some looking, looks like my 500 WHP is going to come from a B16A.

 

My boosted b20 vtec cracked every sleeve...i tried to post pics but computer being gay. I decided to do lsvtec now. Im saving my b20 to get re-sleeved

 

Just go with a sleeved gsr block that what I'm doing.

 

you can push it to 400 + try it and keep us updated.

 

have a nice day

 

I appreciate your info, i'm an ASE certified tech and built a couple engines. Not saying i'm the best engine builder in the world as there are plenty with tons more knowledge than me but these motor''s are seriously simple to build. As far as tuning, i have one of the best tuners in the east coast who will be tuning my car so i'm ok in that aspect as well. And i'm not going anywhere near 5k to build this. maybe 4k max, realistically in the 3k's. And this is going for 500whp either, 400 which is significantly less.

dang, i'd love to see it.

easier said than done.

I definitely will, i plan on doing a build thread.

Yea, i also have a perfectly fine ls longblock (81mm) which i'd probably use if i didn't go b20. I was just thinking about doing things differently this time around. Sleeves aren't in the budget, if they were i'd def be running an 84mm (2.0) gsr block.

 

im going b20vtec turbo. i dont care what anyone says. if it works i will make a fair amount of torque considering my stock sleeves are bored to 84.5mm. im also aiming for 400 whp and not stopping until i achieve that on 93 octane. i will keep you updated how it works

 

pics arent the greatest but every sleeve had a crack and the pistons were all damaged (stock internals) maybe I just was unlucky. but I wont boost a b20 vtec unless its sleeved.

 

have a nice day

 

yea my ringlands were toast too. lol. oh well taught me a lesson. don't have the money to sleeve a block but If I would definetely sleeve a block if i was gonna push any decent amount of boost.

 

how was the tune? i've seen stock bore 81mm look that bad as well with crappy tunes.

 

im not trying to bash on you horn12007, but you did state that you had stock internals and im assuming you had a terrible tune for all four sleeves to crack.

 

don't you ever bash me you ****....lol jk. Idk I bought the car like that a few years ago when I knew alot less about these cars. It was still fast even when it was smokin real bad. lol. honestly it had a zdyne obd0 and apexi neo hooked up so I don't know how good it was, but Im keeping the block to sleeve (thats all I can do).....but anyways thats my first impression of a b20 vtec with boost