In a message dated 98-03-22 18:58:29 EST, you write:
> Oh, Dear, I have to disagree with someone again.....!
>
> John, I'm afraid unleaded fuel does, indeed, contribute to burned valves.
> You're right in that improper adjustment or a lean mixture can also figure
> in the equation, but unleaded fuel used in a head which has not been fitted
> with hardened seats will often result in valve seat recession and burned
> valves.
>
> It's most important that, any time a cylinder head is off for a valve job,
> the machine shop doing the work should install hardened exhaust valve seats
> if that has not already been done. Fitting stellite-faced exhaust valves is
> further protection against future valve-burning problems.
>
> Lawrie
> British Sportscar Center
I had hardened seats put on my 71. Why didn't MG put these on as OE?
Surely they knew the US was switching to no lead in 1971.
Bob Donahue (Still stuck in the '50s)
EMAIL - BOBMGT@AOL.COM
52 MGTD - under DIY restoration NEMGTR #11470
71 MGB - AMGBA #96-12029, NAMGBR #7-3336
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