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Re: Hestitatin' and a Judderin'
Posted: Fri Apr 26, 2013 9:59 pm
by bmcecosse
That is a 'burn' - once there is a space - the hot gases soon errode away more and more of the valve. As you indicate - worry more about the condition of the seat...... And in future set the 15 thou gap -and check it!
Re: Hestitatin' and a Judderin'
Posted: Sun May 19, 2013 8:26 pm
by edd_barker
UPDATE
For anyone whose interested...
Burnt valve swapped with one from donor engine, head cleaned, valves lapped and all new gaskets fitted. Runs a treat again.
Brakes had a build up of something caked on, either dust or there was a coating on the drums that I didn't clean off. Whichever, a clean up with wet/dry sorted them out as well.
Thanks for all the advice!