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Pete · 07-22-2021, 04:30 PM

I understand about the "no original" seats.

I don't understand comparing flathead Fords to Windsor's.
If there is enough original block material left, you do not need hard seats, especially for a street engine. Hard seats were common on propane fired engines but I saw plenty of those without seat rings that ran just as long as the ones with.

All out flathead Ford race engines running 100% nitro never need hard seats and they
get quite a bit hotter than any street engine.

If you are burning valves, YOU ARE RUNNING LEAN.

07-22-2021, 04:30 PM	#11
Pete Senior Member Join Date: May 2010 Location: Wa. Posts: 5,409	Re: new valve seats for a 53 EAC I understand about the "no original" seats. I don't understand comparing flathead Fords to Windsor's. If there is enough original block material left, you do not need hard seats, especially for a street engine. Hard seats were common on propane fired engines but I saw plenty of those without seat rings that ran just as long as the ones with. All out flathead Ford race engines running 100% nitro never need hard seats and they get quite a bit hotter than any street engine. If you are burning valves, YOU ARE RUNNING LEAN.