What's your opinion on boost a h22?
 

ok guys, i just got a h22a4 and want to boost it, what should be done to make it a reliable/strong motor? how much boost could i do on the stock bottom end? dont really know about the h series but couldnt pass up this deal. but i do know you can build them nastily, i just need to know what to do, hah.

Re: What's your opinion on boost a h22?
 

i think like 5-7lbs safely. im pretty sure the h22's have very weak ringlands.....google is your friend

Re: What's your opinion on boost a h22?
 

May I suggest reading and doing much of it. Asking how much boost you can go on a stock block for instance is backwards. Start with a hp/tq and torque curve in mind, then go from there. Consider in your budget as well for such a project. Are you able to "suffer" from downtime of not having a running engine in this Lude? Etc, etc. Read up on the threads here or elsewhere. A knowledgeable boost Honda owner is a good thing (so long as that owner absorbs accurate knowledge -- there is a plethora of crap replies/posts out there regarding engine building, boosting, engine management/tuning, etc.).

Re: What's your opinion on boost a h22?
 

thanks im looking into it all over but everyone says different things. i guess the only way to find out is to try it, right? but sleeving and lower comp pistons seem like a must.

Re: What's your opinion on boost a h22?
 

all i remember on h22's is that the dizzys get burned up quick :P correct me if i'm wrong lol

Re: What's your opinion on boost a h22?
 

I have had a stock H22 make 345whp on stock internals for over a year before we tore it down to make more power. I have seen a few make more power then that without breaking the motor apart. If you are looking for around 300whp then stock internals will make that with a good tune.

Re: What's your opinion on boost a h22?
 

any more from anyone?

Re: What's your opinion on boost a h22?
 

it is all in the tune to be honest...

also the h22a4 is an open deck block as compared to a jdm h22a which is closed deck and better for boost. i ran a boosted h22a4 for a couple months and it came apart at the worst possible time. i had 550cc injectors and i was tuned on hondata @ 7 lbs with a "reliable" tune. while the car was up and running it rolled the fuck out, but if i had to do it again i would build the block first to save yourself the trouble. if you don't have a daily i'd buy one 1st before undergoing such a project as well.

Re: What's your opinion on boost a h22?
 

the problem with the h22 is the weak cyl walls and the coatings that are on them. the stock sleves in them have higher expansion rates than other honda motors . thats where the down fall will be . but like he said above , i also have seen nive power out of a stock boosted h22 just dont get crazy with it ( detination is not your friend ) . if you want it reliable with the ability to go more boost in the long run ........ then do it rite the first time . you could spend alot of money on a good turbo set up but if you motor comes apart it will destroy every thing and ull have to start fresh..... so if it was me i would deff. do sleves, pistons, rods, ( i also pefer to do head studs and main studs, rod bolts , while you replace the berrings too ) then all that is left is the head witch can be done to wut ever prefrance is .

Re: What's your opinion on boost a h22?
 

EH3 is right about the ringlands. I've personally never heard the cylinder walls were an issue. People have been getting good results with the Mahle Gold series pistons.