Re: Cyl Head

[Susan and John Roper <vscjohn@iamerica.net>]

AlexB72 wrote:
> 
> Hi All,
> 
> I think it's time to rebuild my cylinder head (burnt #4 exhaust valve), and I
> was wondering what can be done during the process to increase performance
> other than milling the head.  (1974 MGB 18V engine).
> 
> Also, what causes valves to "burn", aside from unleaded fuel?
> 
> Thanks listers,
> Alex Baroiant
> 74MGB

Unleaded fuel does not cause burned valves.  Most probable causes are
improper valve adjustment and/or lean mixture.  John