2.85 head

[VH camping]

Hi every one I want to know if I can put a 2.85L head on to a 3.3L blue motor. And how can you tell the differince between them.

[Boonz]

if its a blue head then yeh if its not then you need to modify some of the water jackets and oil galleries.....

[nizmovk]

any reason for the head job? I'd go yella terra if you're going to spend that much mucking around...

[VH camping]

Thanks for that. Its a blue head. The one I have now has got a crack in it and I need to replace it. The car is on LPG would that have cracked the head. I have been given a head off a 2.85L and was going to put it on my motor. The car is just a to get me from work and back home. I think a yellow tera head would be worth more than the car.

[Tree cutter]

The 173 head will raise the compression a fair bit because of the different combustion chamber shape. You should get away with it running on gas but on petrol it will ping a bit.

[gd81]

You'll also need to block of the air injection ports over the exhaust if it's from a VH.
As the VH 2.85's (173) had the air injection the same as used on the VK carbie 6's.