[Healeys] High Octane Gas

[Oudesluys]

This will not damage your engine, nor would you have to change oil more 
frequently, in general the bearing will carry a slightly lower load. You 
have to advance the ignition as high octane is slower burning. How much 
should be found out by trial and error. It depends on the CR, Valve 
timing, carbon build up etc.
Start with about 5 degrees, retard 1 degree (or more) if pinking occurs, 
if no pinking advance 1 degree. If you found the timing at which the 
engine just does not pink, retard a further 1 degree.
Kees Oudesluijs


Op 28-7-2012 17:35, Fred Wescoe schreef:
> List,
>
> I need some wisdom and experience from others on this.
>
> I have accidentally stumbled across a small supplier who sells 110 octane,
> non ethanol gas as a regular thing.  Not an airport, the local airport will
> not sell it to me.
>
> The question is, if I use it, will 110 octane fuel, in a standard Healey
> (68,000 miles, not rebuilt) engine, damage the engine in anyway?
>
> If I use it, should I tune the engine differently; IE timing, points, plugs
> or even change the oil more frequently?  I have a very old Sears tune up
> meter with which I precisely adjust points, dwell and timing so those
> things are not done by ear".  I also use a Color Tune to adjust the carbs.
>
> What else should I be aware off?
>
> Fred
> 63 BJ7
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-- 
Kees Oudesluijs
Dorpsstraat 183
2995XG Heerjansdam
T: 078-677 1233
E: coudesluijs at chello.nl

Technische commissie Jensen Healey en GT
Het Jensen Genootschap Holland
www.jensenholland.nl