Miata Mailing List: August 1993, Message #126
sponsored by



     


   From: buck@granite.ma30.bull.com (Kenneth J. Buck)
Subject: Re: Recommended octane
   Date: Tue, 17 Aug 1993 08:31:42 -0400


> From: fischman@nynexst.com (Gary Fischman)
> Subject: Re: Recommended octane
> >
> For the past 2 years (mine is 3 years old) I've *had* to run premium fuel
> to avoid knocking at *high* revs.  The lower the octane, the more knocking.
> With 93 octane, it seems to disappear entirely.
> Basically, I'd get the knocking when doing a maximum accelleration beginning
> at about 5000 rpm.  I haven't done anything with my timing (other than
> replacing the belt).

two questions:
1. you replaced your timing belt? when and why?
(due to problems, or do you just have high mileage on the car?)
2. do you know your timing is set to spec, or are you just
assuming that?  (it's possible the timing is set incorrectly
and thus the engine knocks when it shouldn't.)