P80 turbo Valves, trw vs Volvo

Post by **Sveedy** » 29 Jul 2020, 16:13

I am thinking worst case scenarios, that I might need a valve or two when I pull the head on Sveedy. Checking prices I see a huge difference between OEM Volvo and TRW. Like $ 95. for Volvo and $ 17. for TRW. Are these something that needs to be Volvo ? I have used TRW internals on other cars with out issue but I thought I should Check.

Post by **abscate** » 30 Jul 2020, 04:38

I think the Volvo ones are sodium filled and the TRW are not. Okay for intake

For exhaust, I think you know the answer

bronco · Post by **bronco** » 30 Jul 2020, 05:45

Ford specc'ed sodium filled valves for the 427 SOHC back in 1965 ! actually I think the intakes were hollow , it said more about the state of valve spring tech than anything else though

I think a decent valve job, a proper seat cut to transfer the heat would make the sodium un-needed

Post by **erikv11** » 30 Jul 2020, 22:55

Get any needed sodium-filled valve-or-two from a junkyard head, spend the money on good seals instead.

Post by **FLXC90** » 31 Jul 2020, 14:26

erikv11 wrote: ↑30 Jul 2020, 22:55 Get any needed sodium-filled valve-or-two from a junkyard head, spend the money on good seals instead.

+1, only thing that changed was stem diameter, 6 vs 7 mm sometime in the conversion to RN and solid lifter period. LPT vs HPT does not matter.