[Healeys] High Octane Gas

[Harlan Polk]

Chris,
If today's 110 octane gas is the closest approximation to 1960s gas our
Healeys were designed for, then my comments are moot and Kees' are right on.
However being an active user of USA gasoline since 1960 I can say that
modern moderate-lead 110 octane gas is much better than the ordinary premium
pump gas that we have fed our Healeys over the decades.
Hap

-----Original Message-----
From: healeys-bounces at autox.team.net [mailto:healeys-bounces at autox.team.net]
On Behalf Of Chris Dimmock
Sent: Saturday, July 28, 2012 11:07 AM
To: Fred Wescoe
Cc: healeys at autox.team.net
Subject: Re: [Healeys] High Octane Gas

Fred, I just love these threads!!
So before I answer you question, I just want to put a few questions (this
being international and all) out there...

Firstly, there are MON and RON octane ratings.

So firstly, what country? MON or RON?

Secondly, before I read another comment, can the poster pull out their
Owners Handbook, and state what octane YOUR Healey required when it was
brand new, unmodified, and a standard compression ratio from the factory?!?!
Then answer the question!

And if you still insist that your car runs fine on some unleaded 85 RON
methylated spirit ethanol blended Crap - refer point 2.

What was the fuel octane specified by the factory? Point 2?

My answer to Fred's question? Mate. If you can afford it, Buy it. Use it.
Enjoy.
You are actually using the closest fuel to the one YOUR Healey was designed
to run on. So if you use that fuel, all the specs in the FACTORY manuals are
correct, for a standard engine.

The owners handbook and workshop manual don't specify ignition settings for
ethanol blended, unleaded, cheap low octane crap fuel. It was specified for
the fuel recommended in your owners handbook. What was that??

By all means, you can dilute your leaded avgas with modern high end unleaded
premium. That's better - far better - than just using any modern low octane
unleaded crap they call petrol. But straight leaded 110 - Perfect. Close
second is home brew unleaded mixed with avgas Always refer to Point 2. Tell
me what the book says.....

Rant over. RTFM.
;-)
Best
Chris

Sent from my iPhone

On 29/07/2012, at 1:35 AM, Fred Wescoe <fredwescoe at gmail.com> wrote:

> List,
>
> 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
$12.75
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