Pinto Valve Stem Seals

[GCash]

Hello

Is it possible to use the CVH top hat valve stem seals on the OHC head? I have just tried but the seals seem too small. The internal diameter of the seal is 14.5mm but the outside diameter on the seat is about 16.5mm.

I thought this was used as an upgrade but maybe I got it wrong.

Thanks

Graeme

[Andi]

Hi Graeme. I cannot remember the sizes. But they worked perfectly. Much better than the pinto way of doing things. I'm sure someone will be along shortly with the sizes answer. 

Andi

Edited May 1 by Andi

[theduck]

Some heads don’t have the raised section of the seat which makes them a straight fit. A suitable size holesaw will remove the raised section of the seat and allow them to fit and work. 

[GCash]

Thanks for the help. I managed to grind enough away to get them to fit.