If I was going to turbo an H22a what compression would would be ideal for boosting. I want to run around 8 or 9 psi but still be able to hold strong at 15psi. What I really need answered is: What would I need to have installed to lower the compression to this degree? Thanks. Yes I have already used the search function

 

If you ran 8 or 9 lbs, you can still retain stock compression, but you will need very good tuning (hondata, aem ems, etc.). The higher the boost, the less margin for error. For 15 lbs, you will need to strengthen the bottom end and lower the compression.

 

try 9:1 pistons

 

Ok first it does not seem like you know alot about boosting cause going from 8-9 psi up to 15 is a big jump and not to be taken lightly, like oh well i guess I will boost 15 today and see what it does i.e. BOOM. An H22a will hold 8-9 with excelent tuning yes but with 15psi you are asking for a blown motor without doing some work to the internals. If you are serious about boosting that much then you should Buy the motor and build it up for boost. Not just stick it in and blow it up. that is just my opinion. take it as you will.

 

True, I don't know much about boosting, 8-9 even 10lbs is really all I want to run. I know the internals would need to be changed for 15psi I just want to hear some comments and info on what needs to be taken to these levels. I am just saving right now for a change over from my high mileage f22b1 and I am just currious what It would take to turbo an H series. So from what I understand is I should lower compression to be able to run 8-10psi. (forget I said anything about 15psi)What are some of setups you guys would build if you were to run a turbo H22a?

 

resleeve the block, aftermarket low compression pistons do not do well with the material that is stock in the h22a. you should buy some rods while youre at it. to my knowledge (which is limited since im not a FI guy) thats all you will really need to do to make the h22a safe for up to 10 psi. plus you will need an engine management system to be able to tune the thing so that you dont blow it up even with a fully rebuilt engine. and when you turbo, DO NOT go above redline...ever...

 

I was just about to ask that very question Fatjoe, I thought it to be true that it is almost mandatory for any real boost in hp, either being through FI or NA, that you have to resleeve the block. Quick question, what is wrong with the original Sleeving of the block, as to why it needs to be replaced before going into any type of somewhat major tuning? *Sorry AccordCD5 I'm not trying to hijack your thread here, but this will also pertain to you, and your query*

 

Try this
https://honda-tech.com/zerothread?id=316373

 

No worry, valid question. Keep askin away, I need to learn as much as I can