FSTVTEC

My b20vtec stock sleeve build. all going in a hf crx

block
b20b
je pistons 12.1
eagle h beam rods
acl bearings
balancing
endyne lsv engine breather kit

head
b16 head
skunk2 springs and retainers
skunk2 stage 3 cams
skunk2 cam gears
race porting by local builder
jg victor x intake manifold
omni power 70mm throttle body
ge headgasket
logic motorsports 4-1 header
gate kevlar timing belt
r/c 370cc injectors
hondata gasket
b16 s1 cable tranny(jdm)








dynoed it yesterday and it went ok. went 215whp 148trq. i was expecting more but my tuner is afraid of going over 8500 because of the stock sleeves and i dont want the sleeves to crack. he was saying we could make more power if we kept going higher.

Teamdiesel

I had the almost the exact same numbers with the Skunk2 stage 3 cams (208/148). I switched to the Skunk2 stage 2 cams outside the dyno and made 222/162 two hours later.

FSTVTEC

yea thats what i was thinkin. but i am also using a very restrictive exhaust(greddy sp2), so im going to go with a full 2.5in exhaust soon. but worse case senario I will switch back to s2s2 cams since I don't really want to go over 8500rpms because of stock sleeves.

1.5Slowmatic

why not just get a cutout and leave the sp2 for street driving? numbers do seem a tad low IMO. id try the cutout first than do the cam swap

FSTVTEC

yea my dad was just saying that last night. I'm ordering one next week. I know the numbers are low and we are trying to find out why. I think the tuner is wanting to play with the cam timing a little bit.

mar778c

iTrader: (1)

As far as your A/F, you could lean out a little from 7500 to 8500 rpm. Your graph says it's at 12.

What size exhaust are you running?

1.5Slowmatic

hes running the SP2 which is 60mm, hence the cut out being ordered

00MRSi

I would go with 3inch exhaust piping. With a decent size resonator and Magnaflow oval or Vibrant 3.0 inch muffler it wont be very loud and will definitely help

ohsnapzafingcu

iTrader: (2)

vtec doesn't seem smooth at all man. did he not spend a lot of time smoothing out the maps?

FSTVTEC

I wish I could read dyno sheets man. thats why I posted this here so you guys can tell me what is wrong with this picture. lol. Honestly I wasn't there when the car was dyno tuned, my dad was. I wish I knew the first thing about tuning. I think the tuner knows what he is doing but this is my first time going to him and hes our local tuner.

Teamdiesel

your vtec is set at 5500 rpms, he should try 5000 rpms as there is to much torque spike at vtec. I noticed the same thing when I used my S2S3 cams. You also should have tried a different header.

Teamdiesel

here is one of the s2s2 vs s2s3 cam dynos I did that day.

ohsnapzafingcu

iTrader: (2)

anyone else notice his torque and hp crossover at 7,500? that's wicked! i've never seen anything like that