Geoff-
Good point (as usual!). Yeah, the "properties" in water would probably
be
different than "air", no doubt!
But, too little time in the radiator is a
major cause of overheating at speed with
"marginal" cooling systems to begin with
combined with other factors as in
"off boost" induction compression heating
of the incoming charge a la vane-type blowers, thermostadt instead of a
blanking
sleeve in really hot ambient outside air temps, etc.
You're right; a thermodynamics "whiz" is
definitely called for.
Now that I am home from recent airline
trip and reviewing "mail", shall go forward in this respect to see if
one (Ron?) ever
surfaced in this particular thread!
Cap'n. Bob
'61 :{)
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From "Geoff Branch" <gjbranch at mediaone.net>
To: "Robert E. Shlafer" <PilotRob@webtv.net>, "Mike MacLean"
<macleans@earthlink.net>
Cc: "Peter C." <nosimport@mailbag.com>, <spridgets@autox.team.net>
References: <21144-3BB44A7A-2896@storefull-226.iap.bryant.webtv.net>
Subject: Re: "Oil Pressure" & "old" overheating problem
Date: Fri, 28 Sep 2001 09:07:51 -0400
Ahhh, but won't more time in the radiator to dissepate heat mean more time in
the engine to pick up heat??? Where is Ron Soave when we need a lesson in
thermodynamics?
Geoff Branch
'74 Meejit "Yellow Peril"
'72 Innocenti 1300 Mini
----- Original Message -----
From "Robert E. Shlafer" <PilotRob at webtv.net>
To: "Mike MacLean" <macleans@earthlink.net>
Cc: "Geoff Branch" <gjbranch@mediaone.net>; "Peter C." <nosimport@mailbag.com>;
<spridgets@autox.team.net>
Sent: Friday, September 28, 2001 6:01 AM
Subject: Re: "Oil Pressure" & "old" overheating problem
> Mike:
>
> 1. Gerard's idea - Larger water pump pulley will slow down waterflow and
> allow more time in radiator at higher
> speeds (rpm's) and reduce tendency
> to cavitate at 4,000RPM cruise
>
> 2. What Annice did not tell me in her post
> was what you told me in your's. They
> had their installation dynoed and installed
> by Judson technicians.
>
> I knew there had to be something they
> did to get their supercharged Sprite to
> perform at highway speeds in hot
> weather with no problems whatsover.
>
> A dyno takes all factors into consideration
> and adjustments in timing and jetting are
> done according to CO, EGT, coolant temp
> and whatever other objective parameters
> are available to the operator/tuner.
>
> Annice and Bob have "pointed the way"
> to all concerned.
>
> They did it "properly" to begin with and
> obviously, it was done right to the extent
> Annice believes the supercharged 948/4.22 was designed to cruise
> American
> highways at 2/3rds it's rated rpm in hot
> weather with no overheating problems
> whatsoever.
>
> You couldn't ask for a better testimonial
> to their method now, could you!? :)
>
>
>
>
> Cap'n. Bob
> '61 :{)
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