On my Elford engine, which was rebuilt by RX Motors, Tim used a 13b exhaust gasket and cut it in half and used it on the 12a which is obviously narrower across the exhaust ports than the 13b.
Genuine 12a gaskets are around £28 so my question is, do you think these would work on a 12a?
Hi Ian
I used the genuine 12A gasket from Mazda, but did have the manifold refaced first as it was warped, the genuine works just fine for me.
Cheers
Ian