P35 and P40 manifolds

[lyks2tinkr]

Thanks for all the feedback. My assumption of the spare set of manifolds was correct that they are from a P30.
As for the P35 manifolds I have a theory. Early production the manifolds were bigger volume but smooth on the outside. Exhaust heat caused distortion in the manifolds. Mine have a good amount of distortion and took quite a bit of sanding to make the cylinder flange flat again.
Later production used the ribbed manifolds that had more rigidity and heat disapation.
Just a theory. I’ll have to compare serial numbers.
I will try and take a picture of all 3 types when I get home and post them up.

[lyks2tinkr]

Here are some pictures of the manifolds.
The 1st picture are P30
The 2nd picture are from my P35 S#55856
The 3rd picture are from my P40. The same manifolds found on many P35s.

[Author]

Posts