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Cadillac Bill · 10-09-2020, 10:18 AM

I have a 1926 T Speedster. Have some overheating. I ran the engine and in a few minutes (At the correct water level) I saw bubbles coming up in the radiator neck.

I pulled the head and the head gasket showed no issues. Before reinstalling, I decided to have the head shaved. I have flat top pistons.

I did a test on the head to see if it had been shaved beore. No stampings from a machine shop. I did a test to see the amount of space in the combustion chambers in the head. I have 275cc which indicated the head not been shaved before.

I think I can shave 35 Thousands and the valves should not hit it.

I have been told about diametric opinions ranging from much greater power, to none.

Suggestions?

10-09-2020, 10:18 AM	#1
Cadillac Bill Member Join Date: May 2016 Location: Stone Mountain Georgia Posts: 44	Shave or not to shave? I have a 1926 T Speedster. Have some overheating. I ran the engine and in a few minutes (At the correct water level) I saw bubbles coming up in the radiator neck. I pulled the head and the head gasket showed no issues. Before reinstalling, I decided to have the head shaved. I have flat top pistons. I did a test on the head to see if it had been shaved beore. No stampings from a machine shop. I did a test to see the amount of space in the combustion chambers in the head. I have 275cc which indicated the head not been shaved before. I think I can shave 35 Thousands and the valves should not hit it. I have been told about diametric opinions ranging from much greater power, to none. Suggestions?