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Synchro909 · 08-11-2019, 06:29 PM

Depends on what the valves are made of. I recently had a camshaft reground and the people who did it said 0.025" on the exhaust with stainless valves. I settled on 0.022" and all has been well. Noisy while the motor is cold but quieten right down as it warms up.
He told of a guy who had put stainless valves in his Model T and set the clearances as per spec. When things weren't working out, an inspection of the camshaft showed that the followers were rubbing the heel of the cam - hard. They opened the gap to 0.025" and all has been well there too.

08-11-2019, 06:29 PM	#4
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,496	Re: valve clearence Depends on what the valves are made of. I recently had a camshaft reground and the people who did it said 0.025" on the exhaust with stainless valves. I settled on 0.022" and all has been well. Noisy while the motor is cold but quieten right down as it warms up. He told of a guy who had put stainless valves in his Model T and set the clearances as per spec. When things weren't working out, an inspection of the camshaft showed that the followers were rubbing the heel of the cam - hard. They opened the gap to 0.025" and all has been well there too. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.