Boost or no on a Accord with an H22A?????

I'm thinking of buyinf an Accord. 2.2L. However, I'd want to put an H22A in it cause the Accord motors are junk. From what I've heard though H22A's don't respond well at all to boost. I've heard with a turbo they have about a 65% failure rate. Now I need to find out why that is.....

Is it the combustion chamber design or what? If so would lower compression pistons help or even just a thicker gasket... What??

Sorry this is so tough but it will be the deciding factor on whether or not purchase an Accord. Thanks...

I am not an expert on Honda engines, but lower compression pistons is always a good idea with a turbo. Perhaps people are putting too much boost for the stock internals to handle, perhaps they aren't re-sleeving the engine. You can run higher compression on a turbo, but it takes VERY good engine management and a fair amount of tuning. You are better of lowering your compression, and don't use a thicker head gasket, lower c/r pistons is the right way to do it.

Also have you considered a B series engine?

i'd get a b series..

the h22 shifts back and to the left when it revs while all other honda engines shift back and to the right when it revs. the prelude was designed to handle the shift of the h22, other cars arent... so if you are high revving while cornering you wont handle as well.. just a thought.

dont put a b series in an accord. H22a, just dont run too much boost til you build it to handle it. lower the cr, forged internals, good tuning.

Originally posted by 90gs
i'd get a b series..

the h22 shifts back and to the left when it revs while all other honda engines shift back and to the right when it revs. the prelude was designed to handle the shift of the h22, other cars arent... so if you are high revving while cornering you wont handle as well.. just a thought.


is that why the Accord SiR from 1995-1997 came with the H22A in japan?


i'd like some proof of your statement, considering the H and B series motors all rotate the same direction and feature the same ignition sequence. it's also not the tranny or drive linkage since all current Honda motors feature two equal length CV axles combined with an intermediate shaft to correct the torque bias the older Hondas suffered with inequal length drive axles.

plus, the H and F series motors feature a forward motor mount for improved engine stability and support compared to B and D series motors.


Originally posted by bigpimpingeo
From what I've heard though H22A's don't respond well at all to boost. I've heard with a turbo they have about a 65% failure rate. Now I need to find out why that is.....


it's due to two main things... the Prelude features very thin ring lands to prevent unburnt fuel from hiding from combustion. this was done to help meet US emission standards. these thin ring lands are fragile, and can break under heavy loading like that of forced induction.

also is the inclusion of FRM liners. FRM doesnt have as much tensile strength as ductile iron, thus limiting it's boost capability unless new sleeves are installed.

replacing the pistons with quality forged pistons a half point lower in compression will solve the ring land problem. sleeving the block with iron sleeves will solve the FRM problem.

putting a B series motor in your Accord will create the problem of "how the hell to mount the fucker" to the mounting positions... there are no mount kits for putting a B series motor into the bay of an F/H series equipped vehicle. you could do it with enough creativity, but why? losing over 30ft/lbs of torque will make you pretty sluggish off the line considering your chassis weight, and losing power is not really the idea of the game, is it?

do jdm h22's have the same problems with the ringlands and frm liners? you mentioned they were that way because of US emission laws, but regulations are less restrictive in japan arent they?

get the H22a, I have a boosted prelude with stock internal for now and Is all about tunning. I seen afew guys running as high as 11PSI on H22A stock internal, not that I would try this. plus from what I hear the H22a drops right in the accord bay.

Originally posted by drift


it's due to two main things... the Prelude features very thin ring lands to prevent unburnt fuel from hiding from combustion. this was done to help meet US emission standards. these thin ring lands are fragile, and can break under heavy loading like that of forced induction.

also is the inclusion of FRM liners. FRM doesnt have as much tensile strength as ductile iron, thus limiting it's boost capability unless new sleeves are installed.

replacing the pistons with quality forged pistons a half point lower in compression will solve the ring land problem. sleeving the block with iron sleeves will solve the FRM problem.

putting a B series motor in your Accord will create the problem of "how the hell to mount the fucker" to the mounting positions... there are no mount kits for putting a B series motor into the bay of an F/H series equipped vehicle. you could do it with enough creativity, but why? losing over 30ft/lbs of torque will make you pretty sluggish off the line considering your chassis weight, and losing power is not really the idea of the game, is it?

Couldnt have said that better!!! Drift your always on top of things!!