Gin152

Hi all I have a 98 v4 terzo I have killed the engine due to nitrous I have got a v5 engine that I have tried to fit but the wiring will not fit the v5 is there a way to mod this if any one knows or has done this any help would be good cheers lee

my94wrx

iTrader: (4)

no easy way im afraid, the one thing you can do is use the heads from your old engine and fit them to your new block as the v5 engine has completely different heads/inlet manifold amongst other things.

Gin152

Cheers for that I thought it not be easy my heads on my v4 were cooked is there any way to mod the inlet

my94wrx

iTrader: (4)

no there wider from memory and the bolt holes are different.

Gin152

Would I be able to put v4sti heads

joz8968

iTrader: (13)

Yep, any heads fit any block AFAIK, so v.4 STi heads is the no hassle option - also freer revving (better cams) than the "WRX" spec ones of the Terzo.

That way you can use all your existing Terzo's inlet manifold/ancillaries and, importantly, not have to phaff about with splicing the differing MY98 and MY99 wiring looms together! Do it - best option... Then just flog on the surplus-to-requirements v.5 heads.

Gin152

Thanks for your help all I need to do is find the sti heads now thanks again

joz8968

iTrader: (13)

Also, keeping with the same MY heads as the block means that you're also not altering the compression ratio, so a set of the metal OEM 1.6mm STi v.1-4 HGs will keep the correct C.R. - no phaffing about, etc...

Gin152

Thanks again for your help cheers

dabow

iTrader: (19)

thats what i did. sti v8 block, with sti v4 heads.
worked great.

that will be sold this weekend
still.