"Gas" valves in a Diesel engine?

So I've found a set of valves that could be perfect for my application. As far as I can tell the head shape and stem diameter at the valve head would provide some performance benefits as well.

I'm concerned about the difference in combustion temperatures between gas and diesel.

Thoughts?

show a pic of the 2 valves. i don't think the temp concern you raised is a factor. nitro cars have hollow valve stems with a liquid in them to disapate heat. the stem and the seat are the only ways to get the heat out of the valve. there is nothing special about normal valves in that regard.

http://usaperform.com/manley-race-master-exhaust-valve-1600-3110-5640-length-15%C2%B0-back-angle-p-4852.html

Those are the exhaust valves. There are some available that have a reduced valve stem diameter near the valve head as well

The intakes are 1.97's that I'm looking at.
Depending on the combo of sleeve/piston I'm also looking at 1.62 exhaust possibly 2.02 intakes

I'll post pics later I'm posting with my phone

I dont see a problem because gas engines run much hotter than diesels.

Stainless exhaust valve wont last very long over 1500*. Just depends on your plan on the motor. You need inconnel exhaust valves if its any type of competition motor. Stainless work fine in intakes though.