Pinging and octane ratings

William K Denton wkdenton at
Wed May 23 19:35:29 PDT 2007

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. 

More information about the GPZList mailing list