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2.85 head

VH camping

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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

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

nizmovk

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

VH camping

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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

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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

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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.
 
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