93JDM_H22

i was wondering- how well can my h22 withstand turbo if i only changed intake mani, TB, cams, valve springs, retainers, and cam gears? (along wit the fuel pump and injectors)

this is my daily driving car, im only lookin to boost it about 8-10 psi and achieve 325-400 whp (if possible).

can i safely boost my motor with those few upgrades, or do i have to sleeve, change piston, rods, crankshaft and all that good stuff? oh yea, hondata s300 and a dyno tune is part of the equation also.


Modified by 93JDM_H22 at 6:42 AM 2/25/2008

grand champ

Changing the bottem end out is probably more important than doing all the top end stuff!!!!

93JDM_H22

the top end is already changed. with what i asked, can i SAFELY boost my motor?


Modified by 93JDM_H22 at 6:55 AM 2/25/2008

Attaus

We can't give you a specific time period. If you have a great tune, 325-400whp can last for a long time. But if you screw up slightly, your block is gone. If you run 5 psi normally, then 10 psi w/methanol it will have a better chance.

The safest and smartest thing would be to send the block off. We've all felt tempted to just boost stock motors. But in the long run it will cost you more money.

Schister66

You're going to need a little luck on your side to make 400whp on a stock H22 and do it reliably. You're going to need a good tune on a sufficient octane fuel and a good setup. If you want to make that kind of power without having to worry about it, i would suggest a simple piston/rod build.

One more thing...dont worry about the PSI needed to get to your power goal...that doesn't factor into anything other than your MAP sensor choice.

93JDM_H22

right on.. now im reseaching some pistons and rods, but i still dont want to sleeve the block.. got any good suggestions on pistons and rods that will b best in my case? btw, whats the deal wit Eagle rods and Wiseco pistons?

HONDACIVC93

whats what deal with them?their good ****

Schister66

I dont recall which kind they are, but there is a certain kind of piston you must use in a stock sleeve H series. I dont remember the reason, but i'm sure someone will be able to elaborate on it.

What fuel do you have readily available to you? The combination of your fuel grade and setup will determine what a safe compression is for you and your goals on pump gas...

93JDM_H22

would i need to sleeve the block in order to safely run them?

im not sure what fuel is available.. like shcister66 suggested, im jus lookin to do a simple piston and rod upgrade w/o having to sleeve the block.

Schister66

No, there is one kind available that works for stock sleeve H22 applications. I dont remember the reasoning, but i distinctly remember there being a different brand/style for stock sleeves vs aftermarket on the H's. I want to say Mahle, but can't say for sure.

93JDM_H22

let me know if u find out b4 i do... i found some mahle pistons but the application was for - h22 turbo (sleeved). im guessin that means there are for a sleeved h22


Modified by 93JDM_H22 at 1:32 PM 2/25/2008

93supercoupe

h22's have FRM sleeves, which is a certian alloy of metal that isnt compatable with forged aluminum pistons.I dont know if its because of the actual materail, or maybe different expansion rates, but i know for sure that if u want to run stack sleeves, u have to have mahle pistons.

F22's have normal cast iron sleeves which accepts normal forged pistons, and are cheaper if u blow them.

The FRM sleeve is stronger than normal cast iron sleeves, i beleive, so maybe using that with mahles might be ur best bet.

Someone will chime in that has had first hand expereince.

93JDM_H22

thanx 4 pinpointing which piston to use on my stock sleeve.. now i guess my final question is: which is best mahle sleeved, mahle gold, or are both suitable?

SovXietday

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93JDM_H22 &raquo;</TD></TR><TR><TD CLASS="quote">thanx 4 pinpointing which piston to use on my stock sleeve.. now i guess my final question is: which is best mahle sleeved, mahle gold, or are both suitable?</TD></TR></TABLE>

Go to one of the mahle dealers or call the company themselves, they will be able to answer your question.

And since when is 400whp a "taste of turbo."

93JDM_H22

i never said that was my exact goal, i jus gave a general range of desired hp

93supercoupe

i would imagine mahled sleeved is for sleeved blocks, but check on that.

with a decent setup and a decent tune, it would be hard not to hit 400 it seems now-a-days.

93JDM_H22

thanx for putting me on the right path.. i checked some other forums, and it looks like the golds are the pistons to run wit the stock sleeve... lol

TheShodan

iTrader: (14)

You could "safely boost" before any of the head work was even done. On the stock block, 325-400whp is honestly not the best goal on the block without upgrading the Sleeves more than anything on the H22. I know a few people who have done so without the sleeving or the change in internals, but believe me, the engine didn't last long after about 300whp.

My recommendation is to work on the block properly to get the hp goal you're looking for.