hatche1

Ok so i've had this h22 motor for a good while all ready. I got eagle rods, mahle low compression pistons, block gaurd, built head, golden eagle intake manifold, and fuel rail. So what i want to know is if i run this set up with stock sleeves how many horses or what 1/4 miles times will i be able to get out of this set up?? Someone please help me out.

grumblemarc

iTrader: (4)

You know we have a Forced Induction forum?
https://honda-tech.com/forums/forced-induction-16/
Find other H22 boosted build threads and read up.

hatche1

ya someone else was telling me there was a force induction forum on here but i couldn't find it. well thanks for the link to it

grumblemarc

iTrader: (4)

Not hard to find. Go here.
https://honda-tech.com/
and scroll halfway down the page. You've been a member for almost 2 years so I thought you might at least know your way around H-T.

hatche1

lol i just usaully go to the search box to find what i'm looking for

hatche1

but thanks again for the help

Libertariat

Why would you lower the compression? lower compression = lower horsepower in both n/a and forced induction applications.

People have easily run 250-400whp on stock h22 blocks. It's all in the tune.

hatche1

cause i was told that with less compression you can boost more and the motor i got had broken pistons

Libertariat

Less compression means less power. Period. It does make it safer to run higher boost, but that's pointless unless you're looking at 600+whp or something crazy. All lowering compression does is lower the margin of error when dealing with a bad tune. A good engine tune will be better for reliability than decreasing the engines capability just to boost it more.

Leave the compression alone and get a good tune and you won't have to worry about reliability.

Good tune > compression.

Wouldn't be a bad idea to upgrade the rods and pistons if that's a concern. Lowering the compression is just going to hurt the potential of the motor whether it be n/a or boost.

Here's some ROUGH numbers for hypothetical arguments sake. Let's assume this is all the same trim turbo on the same engine with different compression ratios.:

7lbs boost 12.1:1 compression = 250whp
7lbs boost 11.5:1 compression = 220whp.

With lower compression you have to work harder for the same power.

grumblemarc

iTrader: (4)

But the tune has to be SPOT ON. Would you risk it? I've heard too many horror stories about crappy tunes and the damage that occurs. The margin for error in a tune gets smaller and smaller as the compression gets higher and higher. If you're tuner is not experienced with high compression nand boost then don't take the risk.

hatche1

well i have had the rods and pistons for over a 1 1/2 to2 years now still brand new in the box. and well i'm not really looking to make this car a dyno queen i want to make it a track car. so what i want to know is if i can get 10's or 9's in the 1/4 mile out of this motor setup i got on stock sleeves with a really good tune?

hatche1

also forget to mentain that a built sohc for boost is going in this car before the h22 does. so the h22 is going to have to be faster then what the sohc will be. we're hoping to get 12's or 11's out of the sohc also on a really good tune.

NotAJDMFanBoy

Maybe we could start a whole league. Bench racing seems pretty popular nowadays.
fact of the matter, you don't know till you know. If it's not fast enough, run more boost.

CRXREFIC

depends who u gnna have tuneing...

i personally will boost a stock h22 on 7psi instead of lowering compression for same setup...

7psi sounds fair on a good tune

dont cheap out, bring it to someone around your area thats a great tuner!!

hatche1

i love this sentence cause it so true

hatche1

well i don't know if you all have hear of this guy but where i'm from theres a guy who has the fastest boosted h22 in town called aaron lopez so i'll probably see if he can tune it for me or theres an other couple of guys that are really good tuners. turbo ric is another guy i can think of right now.

also i am looking to boost at lease 15+ pounds of boost and no lower. like i previously said this motor can not be slower then the turbo built sohc that is coming before the h22.

hatche1

also the guy i got the h22 swap from had the h22 boosted and had it running 12's or 11's for only a coulpe of months until the pistons ring lands went out and broke. i don't want this motor to blow right away. i want this motor to last for a really long time

Libertariat

You do realize that 15lbs of boost is a magic number. 15lbs on one turbo would yield X results. 15lbs on another trim would yield Y results.

You're looking at running 9's? Have you got a parachute? Roll cage?

If you want to run sub 10second 1/4 miles you will not accomplish that with low compression OR stock sleeves. You're looking at custom differentials, totally rebuilt engine. Judging by this thread you're a bit over your head.

hatche1

You're looking at running 9's? Have you got a parachute? Roll cage?


on the b note i already know what the nhra classifications for running 11's throw 9's is. i forgot to mention to you all that my dad has been doing drag racing for over 22 yrs. once you get in the 11's you need a 6or 8 point roll cage and once you get in the 9's you need a full roll cage, parachute, and window net

hatche1

If you want to run sub 10second 1/4 miles you will not accomplish that with low compression OR stock sleeves. You're looking at custom differentials, totally rebuilt engine. Judging by this thread you're a bit over your head.


well thats why i came on here to ask you all if stock sleeves will hold up to want i want to accomplish but from what i can see they won't hold up. so thanks for the help

sde780

There's a thread on preludeonline, nearly half of all people running stock pistons blow the ringlands on low boost (5-7 psi), making around 250 whp

mnsnomaneg

high comp plus high boost = detanation

jbpnoman

Wrong. High boost + high compression = high power. Bad tune = detonation, regardless compression or boost.

Also, please don't bump a year-old, dead thread.