03 650 head on 2004 fc450 engine?

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Joined
Aug 25, 2006
Messages
31
Location
Cyprus
I've got a deeply pitted valve seat on my 2004 fc450, and everyone who can fix it is on holidays here for the whole of August.

I have a complete head from an 03 650 and was wondering if it could be used without any major modification
 
i believe you can but you may find that the inlet manifolds are different, also the valve sizes will be different.

you will need to do a check though. make a see-through plastic plate to sit on the face of the head. drill a 5mm hole. then put the HEEL of a vernier gauge through the hole and measure the distance from the top edge of the valve to the face of the head. if the plastic is 6mm thick and you measure 12mm then you know that the valve is sat 6mm down into the head.

do this for an inlet and an exhaust in both heads. you are making sure how deep the valves are sitting ok?

a clear perspex sheet. like a pane of glass but plastic!

finally, if this is different then your came timing will be different. so let's hope that the two heads are the same?

why not tell us when you are done.

regards

Taffy
 
Taffy,

thanks for the advice. I had to leave Cyprus urgently (family issue in OZ) before i could get stuck into trying the mod. I'll give it a go when i get back to Cyprus next month and keep you posted. Cheers
 

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