Premium Gas - Yes or No?
#11
(09-12-2019, 11:35 AM)1969_Mach1 Wrote: Before relying solely on audible pinging (detonation, preignition) it might be worth knowing the static compression ratio of the motor.  If that's unknown, at least check the compression on one or more cylinders.  There are times when exhaust noise might overpower some pinging.


It's a classic car.  Not trying to be critical, but in my mind, using a fuel that might be better than needed is nothing to be concerned with.  And if premium fuel is more than needed, maybe the timing curve can be advanced some to get more power from the motor.

True I never thought of that.  Yeah I guess even if it does a little bit of benefit then thats a win.
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#12
If it was a daily driver and you had a 40-50 mile commute each way to work (like most of us in California) then I'm with you, the additional cost of premium pump gas would be a waste if it wasn't needed.
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