Pricey

iTrader: (7)

Hi all

Hopefully somebody can help with this one?

Has anybody successfully fitted v9 AVCS heads from a Hawkeye to a 2.1 CDB stroker?

Cheers

Pricey

MartynJ

They'll be no use having been manufactured for the 99.5 mm bore of the 2.5 engine.
You need V7 or V8 heads really.

banny sti

iTrader: (68)

UK Hawkeye heads are chambered for 2.5 99.5mm pistons, so wont work with a 2.1 stroker as that runs 92mm pistons

jura11

iTrader: (7)

As above you you can't run 2.5L hawkeye heads on a 2.1.

JDM Big port heads ideally or UK STi heads will be good too,but everything depends on what power you are thinking to run


Jura

Pricey

iTrader: (7)

Ahhhhh! Could be worse, not like I just bought v9 heads and had them refurbed for a total of £650! Tw@t!

Ok, what issues are there with the ECU from a Hawkeye and earlier heads?

Cheers for the replies guys!

ditchmyster

iTrader: (7)

Bugger, thats an expensive lesson.

Pinned 2.5 block will take you to 500 no probs but i think that will cost more than a 2.1

bigsinky

oh dear

Pricey

iTrader: (7)

Not too bothered because the heads will resell but just need to know if there will be any issues with the Hawkeye and an older set of heads?

Pricey

iTrader: (7)

Anybody know if v8 avcs heads will run fine in a Hawkeye? Any issues with avcs and speed sensors. I am told that the secondary air pump and tumble generator valves?

I am very close to having to make a decision on selling my 2.1 stroker and sourcing/building a pinned 2.5.

Ideally I want keep the engine I have just built but don't want issues running it in my Hawk.

wiley

iTrader: (63)

feature on total impreza, rb320 running 2.35(EJ22 CDB stroker) but with custom heads made by SW Motorsport. might be worth calling them

wiley