3.2 Ss

[code7rpd]

For a 3.2 ss conversion in which bigger pistons and cylinders are used on a 3.0, do you ned to do any head machining since the 3.0 cylinders has head gaskets and the 3.2 does not?

[Carrera3.5L]

Originally posted by code7rpd
For a 3.2 ss conversion in which bigger pistons and cylinders are used on a 3.0, do you ned to do any head machining since the 3.0 cylinders has head gaskets and the 3.2 does not?

Well, since no one answered, I guess I will.

The only modification necessary is a small chamfer on the heads to match the larger cylinder bore. Ollie's are any other competent machine shop can perform this for you with little difficulty.

Ralph

[code7rpd]

Perfect thanks!

[Michel J]

Ralph or anyone else,

I am hoping you can explain this chamfer in a little more detail and why it is necessary.

What happens if this chamfer is not machined at the head?

Thanks,

Michel

[Carrera3.5L]

Originally posted by Michel J
Ralph or anyone else,

I am hoping you can explain this chamfer in a little more detail and why it is necessary.

What happens if this chamfer is not machined at the head?

Thanks,

Michel

Michel,

The chamfer is done on the head to eliminate any potential flat spots where the now oversized cylinder meets the head. With the cylinder on the head, you can scribe a circle around it and look and see where the chamfer needs to be.

To be honest, I really don't know what the effects (if any) would be if this step is missed/ignored, other than potentially creating a hot spot.

Ralph