David Allen wrote:
>
> Hi Paul: I have not had much luck with unleaded fuel. My BGT travels from
> 6 to 15 thousand miles a year and I'm on the fourth valve job in six years.
> Just replaced the original cyl head, which had seats in the exh and intake.
> The exh.seats were worn excessively, the intakes were fine. I think you
> would be wise to specify the hardest seat, your machinist can come up with.
> IMHO it depends on how hard you drive and the rpm's the eng. is turning.
> A V8 B with the original gearing is not going to be a problem, a 1800 B
> is going to wear the seats rapidly ,in my opinion. I now use a lead
> substitute,with hardened seats!!
>
> Hope You Have Better Luck
>
> Dave '70BGT
Thanks for this, Dave.
I have a factory V8 as well but Roger Parker (someone who I consider to be an
authority,
judging by his input to the BBS) assures me that these already have hardened
seats because
of the alloy heads. I have been using unleaded in this car for a while now,
but not doing
very many miles. That is now to change to about 160 mainly motorway miles per
day for up
to a year. We shall see.
Cheers,
PaulH.
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