Annice-
Hmmm! Did your Frog have the 5 ring
pistons, I wonder?
Cap'n. Bob
'61 :{)
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Date: Wed, 26 Sep 2001 14:53:20 -0700
From Mike MacLean <macleans at earthlink.net>
To: Ankitterer@aol.com
Cc: PilotRob@webtv.net, spridgets@autox.team.net
Subject: Re: "Oil Pressure" & "old" overheating problem
References: <ea.1b695354.28e39b6c@aol.com>
Annice, Bob,
I envy your performance with your Judson in hot weather. My problem is
different. If I keep moving "in town" I'm O.K. water temp wise. It is when I
am
on the freeway at extended high speeds that the temp continues to rise until it
reaches the 212F mark and I have to pull off and let it cool down for 15 minutes
or so to continue on. I am obviously generating a lot of heat under the bonnet
that is not being carried away with air flow through the engine compartment or
the radiator fast enough. This may be a combination of two things; the
supercharger itself radiating heat under the bonnet and the fact that the
pistons
that were replaced during the rebuild have an extra oil scraper below the wrist
pin causing added friction in the cylinder walls. This is just too much for the
radiator to cope with during high ambient temperatures. This will probably not
be solved during summer months until the pistons are changed to the correct 3
ring type plus more air is allowed to flow from the engine compartment.
Mike MacLean Supercharged 60 Sprite
Ankitterer@aol.com wrote:
> In a message dated 9/26/01 11:06:48 AM, clabaw@jpl.nasa.gov writes:
>
> << At 08:05 PM 9/25/01 -0400, Robert E. Shlafer wrote:
> >
> >Mike, Sprites were never intended for
> >American running conditions, even as they
> >were back in '58, and were definitely not
> >designed to run in hot climates; there is >>
>
> Cap'n Bob: This seems to be "written in stone" now and our experience in the
> '60's proves otherwise. Now the intent may be questionable, but the fact is
> that I drove MY new Bugeye stock between San Diego and Yuma (summer air
> temperature 120 degrees) regularly without overheating incidents. The only
> time I was ever concerned about the Sprite overheating back in those days was
> near a Military fort where Bob was serving as a reservist and the air temp
> was 105. The road was so bad I couldn't drive over about 40, which barely
> kept the engine below boiling. Obviously, we were using 60's oil and high
> octane gasoline (at 30 cents a gallon).
>
> Bob had the Judson installed in HIS car in 1960 and took it on a 3800 road
> trip into Oregon, Washington, Idaho, Utah, and Arizona and back to
> California. Despite 100 degree weather, the car performed beautifully. Of
> course in all of this, the sunburns were legendary. I had a lovely tan
> right around a cross-your-heart bra and through a blouse.
>
> So the next time someone tells you that these cars weren't intended for U.S.
> driving conditions, tell them that may be, but they performed admirably
> anyway. For a couple of years it was the only car we had.
>
> Annice & Bob
> 1960 Bugeye (Mk. IV in disguise)
> 1966 Sprite Mk. III (Still in Boxes)
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