Hey guys,

Im rebuilding my b20v setup. I bought a b20v setup from a friend who actually got it from someone else, problem is I didnt know exactly what was in it. It made 208whp which I thought was pretty decent numbers for stock honda parts skunk2 intake/ 96 ITR header on its first tune. I got my head setup ready too go and am kinda just waiting to get everything together and assemble. The GSR head build is:

4piston outlaw cnc port/polish head
skunk2 Pro+3 camshafts
skunk2 ultra series valves
a3 beryllium exhaust seats
skunk2 titanium vavle retainers
skunk2 lost motion assembly
skunk2 pro xp vavle springs
supertech manganese bronze valve guides
skunk2 viton vavle stems
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Now the problem is I dont know what would be a good bottom end setup too complimentmy headsetup too run a good high compression drag motor. I have everything taken apart besides my bottom. Im pretty sure my bottom end is still at a stock bore, with different pistons and a changed crank but cant be quiet sure because the pistons dont say anything on them and I havent openned the bottom to see what kind of crank is in their. I had the compression checked the last time I had the motor running and it was at 12:1:1. Im trying to exceed 250whp on 93 octan if possible if not 250whp is still good enough. Any advice would be great help guys, Thanks!

 

Is the car going to be driven on the street at all? Or trailered to and from the track?

 

I would stay at around 12:5-13:1 compression for that mark.
Make sure u get it sleeved and aftermarket rods

 

Its going to be street driven from time too time on nice summer weekend days other than that itll be on drag strips. I want to keep reliability too the motor and the highest ill probably go with compress is 12:5:1 unless people can persuade me otherwise haha

 

At your elevation, I would try to target 12:5~13. You're gonna need all the help you can get to make 250+ on 93. I would also pay close attention to what IM you use. A King Motorsports modified Performer X would personally be my first choice, or the S2 Ultra. If your walls are good, I would do this piston: http://www.ipg-cppistons.com/Acura-B...ns-12.7-1.html

Who is gonna tune it?

 

I was planning on picking up a 74mm Skunk2 Throttlebody and a Modified Skunk2 74mm Ultra Intake Manifold from 4piston. I was planning on my local turner tune my engine. The shop name is richtuned, he has tuned tons of cars in Washington.

 

12-12.5:1 seems to be the sweet spot.

250whp is totally doable on that setup, in fact I would think maybe more.

 

That's what I'm thinking too, sucks I don't know what I have in my bottom block. I was going to bring it in too my machinist and see maybe if he could identify the parts in their so I can have a better idea of what Im working with.

 

ask luke for some advice.

for aftermarket valves i'd get the ferrea 6000 series.

 

I just talked too Luke a little bit today, just waiting on an email response. I don't want too loose a lot of reliability on my motor but going too nuts.

 

If you're concerned with reliability so much, why are you building such a big motor using a B20 block?

250+/pump gas/stock B20 sleeves/reliability seems to be asking allot to me. I don't have any first hand experience with B20 blocks though so....?

 

alot of good info here, I see what clean rice is talking about with the sleeves. I would either css that b20 block or find a sleeved block.

Build seems solid, AEBS manifold may not be out of the question.

 

People are still stuck thinking the AEBS IM is worth a ****?

 

Meh, the B20 sleeves are fine for all motor. The problem comes when people don't tune their motor and it detonates... just a little detonation can crack a B20 sleeve.


I daily a stock sleeve B20/Vtec, I think DDtech does too. BlackDC4 beats the **** out of his stock sleeve B20/vtec as well.

We also run 91 here.

 

The aebs has decent characteristics, they do an adequate job on a 2l motor and are affordable.

If I was the op I'd run the px or ultra street. Just giving him options.

 

before I started taking apart my motor, I must admit I did the same thing too :/ hahaha

 

before I started taking apart my motor, I must admit I did the same thing too :/ hahaha

I am picking up the 4piston s2 ultra street mani

 

Sleeves are fine for NA

Get rods resized for ARP rod bolts and a new set of bearings.

YCP pistons arent a bad choice either if sticking with OEM rods.
I quick deglazing of walls and new rings and itll be all set. I have a flex hone if you plan on DIYing it.
just make sure to degree your cams and watch P2V clearances

 

I am fully aware of detonation.

Derek drove his car around with a lap top. There is nobody out there(in the NA world) that watched his tune closer than he did, and his sleeves cracked.

I am not saying it can't be done, but if I am looking for 250+ and max reliability...there isn't a chance in hell I'm using a stock B20.

If my goal were closer to 210~220...then sure, I'd use one. But 250 on a real dyno, no.

 

Hmmmm I have seen some pretty impressive builds w/ the AEBS manifold. Just takes a port match and some cleaning up and its a pretty solid piece for $200. I mean in all reality is it worth spending an extra $200 on the S2 ultra street for a daily car? I can see full track where every .1 hp counts but for the everyday guy, save 200 bucks and really you aren't losing THAT much on top. I'd rather use that $200 for dyno time or a set of slicks rather than 4-5whp after 7-8k

Learn to drive and 5whp isn't **** but a number. justsayin

 

I've also seen impressive results with an oem P30 manifold. Doesn't mean thats the one to go with.

 

Daily Drove on 84, 84.5 and 85.

The car has been fully converted to Racecar status, its on 85mm stock sleeves, Motor makes 26x, It has a 175-200 shot of nitrous on top. Still, Stock sleeves.

 

Wow stock sleeves. ? Here in germany, austria they crack every time with a tune :/

 

Dude I could have SWORN you said your sleeves finally gave up!!?

 

No indeed, I'm here to find the limits, i'm pretty sure after I hit it with a 175+ a few times, they'll give, and that's fine, we're all planning for it. Back up motor is already in the works..

In the mean time, we're doing some different things to try and make some more on motor, Jason Lumpkin designed a new hood exit header for me, and we'll be testing that. Hoping to make more then the last Myers and others.

Car took a 100 shot single fogger no problem, however, once you start getting big, that cyl 4 starts getting a lot of nitrous LOL