hello
I have a h22a4 and am looking into boosting it soon. what im wondering is since the a4 is an open deck block, should i use a blockguard to toughen it up a bit? or should i sleeve the cylinders? both? is there any good pistons that wont scar up the cylinder walls like forged pistons do? i want to run about 15 psi.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">hello
I have a h22a4 and am looking into boosting it soon. what im wondering is since the a4 is an open deck block, should i use a blockguard to toughen it up a bit? or should i sleeve the cylinders? both? is there any good pistons that wont scar up the cylinder walls like forged pistons do? i want to run about 15 psi.</TD></TR></TABLE>

a. blockguard NO....once again the sleeves arent the ones that are that fragile its the ringlands

b. Psi means nothing depends on what turbo you are running

c. If u plan on running forged pistons you have to sleeve your block, unless you wanna go with the alternative mahles but used with mixed results.(search there is a thread about them somewhere)

 

Ihad a smaller turbo i was thinking about.. it hada 48 trim on the housin A/R and the turbine is 76 trim and .64 exhaust housing A/R (im not too sure about these numbers had them written down from garretts site) and this setup was planned to run about 8-10 psi. now i want to run something bigger maybe a 50-60 trim for the housing A/R and the turbine 76 trim and .82 exhaust housin A/R. so what can i do to make my block withstand

 

*this

 

here is the mahle thread https://honda-tech.com/zerothread?id=1406865
here the h22 turbo thread https://honda-tech.com/zerothread?id=316373

 

so you think if i leave everything stock maybe shot peen the rods or something drop the cr to like 9- 9.5 it can take boost well?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">Ihad a smaller turbo i was thinking about.. it hada 48 trim on the housin A/R and the turbine is 76 trim and .64 exhaust housing A/R (im not too sure about these numbers had them written down from garretts site) and this setup was planned to run about 8-10 psi. now i want to run something bigger maybe a 50-60 trim for the housing A/R and the turbine 76 trim and .82 exhaust housin A/R. so what can i do to make my block withstand</TD></TR></TABLE>

depending on your goals and how good your tune is your stock block will be fine, but again these options are very subjective depending on your goals.....how soon you want to spool etc etc. Small turbo will produce less HP at same Psi compared to a bigger turbo. In my opinion a 57 trim would be ok, now you could go bigger but sacrifice spool times.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">so you think if i leave everything stock maybe shot peen the rods or something drop the cr to like 9- 9.5 it can take boost well?</TD></TR></TABLE>
How do plan on lowering compression? If u r planning to drop the compression using headgasket i think not a good idea

 

yeah i kinda want a quick spool max hp is not my highest concern.. tuning will be very good there is a good shop where i can get it tuned. im worried because this is my DD as well

 

cant you get these mahle pistons with a lower cr?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">cant you get these mahle pistons with a lower cr?</TD></TR></TABLE>
yes u can.....this is going to be a daily driver u realized there is going to be some machining done to your block to accommodate those pistons???? meaning taking the engine out of the car and some downtime involved

 

alright so with lower c/r mahles it is. thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">i want to run about 15 psi.</TD></TR></TABLE>

That will be a bit iffy on a stock block.

 

I brought my brand-new, stock block in to D&G Motors a couple of days ago, along with my crank, type S pistons/rods, flywheel, etc. to be balanced and mapped. The owner there really knows his **** with these motors, and I talked with him for a while on forced induction. Apparently, he's ran these motors with stock pistons, rods, blocks/cylinders...all but stock valve trains and had no problem running 15-18 pounds of boost, pushing over 400 WHP. He also said that the H22A blocks are not good sleeved. I can get more details from him if you want.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Needy4Speed &raquo;</TD></TR><TR><TD CLASS="quote">He also said that the H22A blocks are not good sleeved. I can get more details from him if you want.</TD></TR></TABLE>

wow, H22a blocks aren't good sleeved? please tell me this is a typo

 

yeah taking the engine out is no big deal.. I think he meant h22a4 are not good sleeved.. what do you reccomend i do to the block to be able to handle 15 psi reliablely? I think i might be good with stock perhaps shot-peened rods right?

 

What about valvetrain? is everything there ok stock? Boost doesnt affect much up there right? im sticking with everything stock up there for now..

 

yeah i would like to get in touch with him. i want to clarify my setup with someone knowledgable.

 

whoever said the h22 block is not good sleeved is wrong! go look in the high horse power H series motor thread in the FI forum. you'll see setups there and most are sleeved. at least the ones I've read are and my H22A4 block has eagle sleeves. you'll see my setup to...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H24Turbo &raquo;</TD></TR><TR><TD CLASS="quote">whoever said the h22 block is not good sleeved is wrong! go look in the high horse power H series motor thread in the FI forum. you'll see setups there and most are sleeved. at least the ones I've read are and my H22A4 block has eagle sleeves. you'll see my setup to...</TD></TR></TABLE>

r u serious? who said that? and where?

 

well if the h's are good sleeved why did you sleeve yours. you just contadicted yourself.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civictuner91 &raquo;</TD></TR><TR><TD CLASS="quote">well if the h's are good sleeved why did you sleeve yours. you just contadicted yourself.</TD></TR></TABLE>

hahaha i know thats statement didnt make the least bit of sense

 

anyway.. do you think my stock block w/low cr mahles can handle a fair bit of boost? thanks so far

 

Ok fellas, I am new here but I am putting an h22a4 to my 98 coupe. If I wanted to turbo this with everything stock. What kind of turbo could I use and what is the max psi wowuld I be able to boost without blowing my engine. Thank you for your input!

 

PSI means nothing. running 15PSI on a 16g would be fine, but if you want to run 15PSI on a big turbo thne our going to be pushing it.