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Ill actually write something this time. I have almost finished a VK 308 to VN injection setup and was recently told the i may have to change the cam? Someone please tell me you dont have to!!! I have the heads back on and everything! But if i do, why?? It already has a mild gas cam in it so will i be ok? any info appreciated, cheers
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You just beat me in posting just as I replied to your earlier post. Here it is again:
Howdy,
The VN onwards heads have different port spacings and hence a different valve position to the old 308 heads. The timing will be the same but you need
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I dont quite understand sorry. I dont know what you mean by port spacings. Sorry to sound dumb but i need to know. Will the car still run??
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Sorry but the engine is a 304 block, built in Nov 85. Up until march 85 they were 308's. Its a black engine.
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Sorry but the engine is a 304 block, built in Nov 85. Up until march 85 they were 308's. Its a black engine.
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Unless your motor was originally a VN on, you will have to change the cam.
I can't remember the actual order of the valves but it is something like: Carby motor - inlet, exhaust, exhaust, inlet, etc. Injected motor - inlet, exhaust, inlet, exhaust,
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G'dday again,
On the old 308's and variants the valve order from 1-3-5-7 & 2-4-6-8 is I-E-I-E-E-I-E-I AND I-E-I-E-E-I-E-I whereas the new VN and on motors have for 1-3-5-7 & 2-4-6-8 the following: E-I-E-I-E-I-E-I & I-E-I-E-I-E-I-E which
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Ok the short and easy answer is you HAVE to change the cam. The engine will not run with the old cam.
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Thanks heaps to everyone for all you help. Its set me on the right track. I have already got all the other stuff, full VN setup. I have to source some headers from pacemaker who make them especially for the VN to Vk conversion. cost about $450 which is go
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