Pinging and octane ratings

Larry Zoia phezanthawk at
Wed May 23 20:21:01 PDT 2007

The statement below is correct. In fact, higher octane fuel will yield less 
power as it is less volatile and will not
burn as completely as 87 octane.  Dyno runs with a
Honda V65 (1100 cc V4) have demonstrated this
to my satisfaction.

Larry in Michigan

>I respectively disagree that higher octane (than 87) is needed for stock 
>GPz1100's, at least here at 30' above sea level.  IIRC, the manual calls 
>for 87 octane and that's what I've always used, even after switching to an 
>aftermarket ignition advancer, with nary a problem, ping or knock. 
>Anything higher than what the manufacturer calls for is unnecessary, rather 
>it is a "feel good" waste of money in a stock engine in good tune.
> JMHO, but also the NSHO of the OEM... <g>.
> Bill in Yardley, PA
> wkdenton at
> '96 GPz1100
> ----- Original Message ----- 
> From: "Julian Solomensky" <jsolo at>
>> I have the FACTORY brand ignition advancer in mine.  The only time I had 
>> it ping was with 87 octane gas.  Brain shut down for a sec and I thought 
>> I was filling up the car  (don't ask) :).
>> As a matter of fact, I don't think I've ever ran 87 or 89 in the bike 
>> since day one.  Always premium.
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