h22 head conversion

mrkh22 · Post by **mrkh22** » Thu Apr 18, 2013 4:39 pm

can anybody please tell me how easy it is to run an h22a7 cylinder head from an accord type r on my h22a5 5th gen? I know the head will fit but not sure about inlet manifolds etc.
all advise is greatly appreciated as I need to either rebuild my head or swap it soon
thanks

craig_jdm · Post by **craig_jdm** » Thu Apr 18, 2013 4:51 pm

you can run the atr inlet mani, fuel rail, injectors and throttle body with the a7 head on an a5 block but will require a tune and a conversion to obd1 due the injectors if i recall correctly

Post by **NafemanNathan** » Thu Apr 18, 2013 5:18 pm

If you fit just the a7 head on a standard block and run your standard h22a5 cams and inlet manifold there is no real need to tune.

If you're running the ATR cams, then ideally you need a tune.

If you run the ATR inlet manifold, then you need a tune.

If you're using the ATR injectors, then you need to convert your harness.

h10ndr · Post by **h10ndr** » Thu Apr 18, 2013 5:47 pm

I have the stock prelude IM on my otherwise complete H22A7 (PDE head / H22A7 block), so it fits. Richy (PA) did the conversion.

A1ex · Post by **A1ex** » Thu Apr 18, 2013 6:20 pm

Dont need to change the harness if he's on a5 for injectors, mine didn't. Will need a custom fuel line if you use the rail tho