Pair of 2.5 STI heads built up with Crower stage one cams, double valve springs and retainers ,converted to 14mm head studs includes all solenoids camCovers avcs sensors and both inlet and exhaust pulleys. Made 550bhp on a 2.35l engine £800ono delivered to UK postcodes.

 

any pictures?

 

Didn't you just buy these? Why you selling, did you think they'd fit on a 2.0?

 

Yes, although the seller hasn't posted them yet he won't refund my payment so am stuck with them

 

I've asked for some pictures to be sent to me but will take some and put them up when I have the heads in my possession.

 

Why won't they fit a 2.0. What's different?

 

The bore diameter of the combustion chamber.. and cylinder bore..

 

This is what I was told. " they won't fit as you will have or can have higher CR which you don't really want when car is boosted or running turbo,plus chambers are different and you can end with mushroom style chambers and due to the head being of larger diameter, which would cause weird temperature problems.I think over on Nasioc you can find bit more information's on this

Not sure if you can CNC them and match them for EJ205/207,but this I never seen or not sure if this can be possible,I know few friends in US running EJ207 on EJ255/257,but I know for sure they CNC'd them and match them for 2.5"

 

What would be needed to fit these to a hawk wrx?

 

Avcs ecu, loom, timing belt etc

 

Afaik, It's to do with, you will need a thick gasket as the Pistons may hit the heads and then your CR is all changed, the heads will be smaller port compared to block, more due to economy on the 2.5.
You don't see many folk using 2.5 heads on a 2.0 block. It's more the other way round which is a common choice.
Too much hasstle.

 

The 2.5 heads are a 55cc chamber suited to 99.5mm bores, so fitting to a 2.0 bore 92mm it will give a very low compression, not high as mentioned above, 2.0 heads are generally 48cc chambers, nothing to do with pistons hitting heads or head gasket thickness.

 

Just to add the cam position sensors are a differnt type and in a differnt position as well.

 

Sale of these is on hold as only one of them has arrived!

 

Both heads are in my possession.