Hi Olin,
Ordinarily, having timing too advanced shouldn't contribute to overheating.
This sounds like a mixture problem ... have you tried richer needles?
bs
***************************************************************
Bob Spidell San Jose, CA bspidell@comcast.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
***************************************************************
> My problem is that over long runs at 3000+ rpm in OD, I am getting some
> pinging and overheating. Everything below 3000 is great. I want to avoid
> advancing too much, but I am thinking that maybe I need to have my
> distributor set up for hi-compression. I have high compression pistons
> (arias) and my cam was suppose to be ground to BJ8 specs. From memory, my
> timing is advancing to approx 30-35 degrees around 2000 RPM. I still have
> the stock distributor and assume the same advance unit. I am running the
> 3.54 rear end with a 28% OD, so I am sure that it adds to the torque
> requirements.
>
> Per the email from Curt below, I would be interested in knowing the vacuum
> settings (normally 5-12-8 for MKII) for the "High compression special
> orders" vacuum units. IE, the start of advance, max advance, etc. If
> anyone could relay that information I would certainly appreciate it.
> Better yet, if you have a good one lying around for sale, email directly.
>
> What do the racers do when they keep the stock distributor and have high
> performance guts?
>
> Regards,
>
> Olin Brimberry
> Raleigh, NC
> 62 BT7
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