Valve options for GN1's?

[TurboTR]

We're looking into trying to get an inconel exh valve, and maybe .100 longer int and exh for a set of GN1 R's. So far it seems tough to find off the shelf valves that don't have much shallower back side angles on them than the originals. Anyone have any helpful input on this? TIA!

TurboTR

 

[S2V6RACER]

I'd call PTE and ask for Dan. They get those heads bare and build them themselves when doing stage motors (what I was told).

 

[The Radius Kid]

Have you tried contacting a company like Ferrea?
Maybe they can help.