[Healeys] Bj8 octane

[Bob Spidell]

(Dormant) private/commercial pilot here.  110 octane hasn't been available since before I started flying almost 30 years ago (too much TEL).  Best you can get is 100LL ('LL' stands for low lead, which is a misnomer because I believe it's only maybe 30% less TEL than 110).   It's blue in color:


https://en.wikipedia.org/wiki/Avgas


It'll be phased out over the next decade or so.  Even rarer is 80-octane avgas, which older, lower-compression engines prefer--still has TEL, though--but many of them can run premium auto gas.   100/130 is available, supposedly, in a few places but I've never seen it offered.


I haven't checked the compression on my BJ8's rebuilt engine, but it should be a bit higher than nominal, and so far it seems to run fine on 'premium' (91-octane here in CA).


Bob



--------------------------------
Bob Spidell - San Jose, CA

> On April 30, 2017 at 10:37 PM i erbs <eyera3000 at gmail.com> wrote:
> 
>     I buy aviation fuel at 110 obtain and mix 4 gallons in and then fill with premium unleaded.
> 
>     Ira Erbs
>     1959 100-6
>     MKI engine and disc brakes
>     excuse typos and strange words my phone wants you to see.
>     Portland,OR
> 
>     On Apr 30, 2017 10:21 AM, "HealeyRick" <healeyrik at gmail.com mailto:healeyrik at gmail.com > wrote:
> 
>         > >         Hi Ken,
> > 
> >         The Road and Track test for the BJ8 only states "premium" fuel is required.  Premium in 1967 would have been about 99 octane.
> > 
> >         Happy Healeying,
> > 
> >         Rick Neville
> > 
> >         On Sun, Apr 30, 2017 at 11:33 AM, goldengt <goldengt at cal.net mailto:goldengt at cal.net > wrote:
> > 
> >             > > >             What octane rating was the bj8 likely designed for? 95?
> > >             Ken Freese
> > >             65 BJ8
> > > 
> > > 
> > >         > > 
> >     > 
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