Got back from Conclave a few days ago and needed about three days to recover
from the ride. It was approximately 2500 miles round trip. Absolutely no
cooling issues whatsoever. Got a good test on the way up. I was caught in
three traffic jams (as Oritt warned) on route 95 - all in the northern Va,
DC and Southern Maryland area. Temps were easily in the 90s, or at least
felt that way. The gauge never went above 190 degrees. No vapor lock.
During driving, the temperature never went above 160 degrees, and in cooler
weather it stayed below that mark. At one point I had lost water through a
loose bolt where the generator is bolted to the block (apparently those four
bolts go into water). I had actually lost quite a bit of water before I
discovered it, but no cooling problems occurred.
Now back to the original thread subject... I had estimated my speed at
certain RPMs because my speedo has not been recalibrated since replacing the
diff with my 3.54. Of course I can't be sure how close to accurate it was
even before that. I kept up with traffic very well at 2700 RPM, lost a
little ground at 2500 RPM and was in mild passing mode at 3000 RPM - all on
route 95 where driving is fast and furious. I figured about 75 MPH at 3000
RPM. Now I've checked it out on the web page Nock provided and it seems I
was going faster than I thought. It tells me I was doing 81.5 MPH at 3000
RPM and 73.4 MPH at 2700 RPM where the car seemed to be very comfortable.
Geeze, was I driving that fast ? In my calculations I put the final ratio
at .778 (28% OD) and my tire diameter at 25.2" (Vredestein 185/70-15). Does
this sound right ? Car is a BN2 with 3.54 rear end.
Regards,
Mike L.
> Date: Fri, 6 Jul 2007 11:17:42 -0700
> From: David Nock <healeydoc@sbcglobal.net>
> Subject: Re: [Healeys] High rpm's
> To: "Ned Smith" <smithn00@kitepilot.net>
> Cc: RAntal243@aol.com, Healeys@autox.team.net
> Message-ID: <097E8C6D-4C60-423B-8466-AA70928F99E5@sbcglobal.net>
> Content-Type: text/plain; charset="us-ascii"
>
> http://www.angelfire.com/fl/procrastination/rear.html
>
> There is an easy way to solve all this. This site you can put in all
> the numbers you want and find out how fast you are going at what rpm.
> Then you will no if it is the tach or the speedo.
> Check it out we use this all the time when we are changing tire sizes
> and rear axle ratios.
>
> David Nock
> British Car Specialists
> Stockton Ca 95205
> 209-948-8767
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