Re: Dyno horsepower |
<– Date –> <– Thread –> |
From: George York (yorkgeorge mac.com)
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Date: Mon, 22 Nov 2010 21:13:27 -0800 (PST)
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Guys,
Watch this ..in Egypt.. running the ferrari hard
and it keep's on ticking !! the true testament of the F355..I personally wouldnt
ever do this....
George
----- Original Message -----
Sent: Monday, November 22, 2010 8:59
PM
Subject: [Ferrari] Dyno horsepower
Hello,
I agree
for accuracy the same dyno should be used for each comparison test and
corrected for temperature and if possible humidity. I used to dyno a
club racing BMW R-90S M/C with lots of mods and the rear wheel HP
readings showed lots of drivetrain losses. A techno geek back in that
era super lubricated everything with high tech synthetics from wheel
bearings up and got more straight line performance out of a stock R-90S
than most engine tuned ones. Lingenfelter used to (1990s) use RED LINE
synthetics in engine, trans, and rear end as well as using a slightly
looser ring and pinion gear setup to cut drivetrain losses. LPE only
advertised rear wheel HP and torque.
Changing dynos can be embarassing. A well known Houston shop rebuilt a
383 GM V8 stroker a few years ago and it made less HP/torque than its
original build sheet showed! Of course different dynos and operators.
That magazine article hurt the shop and Royal Purple Oil in the F-body
community for a while.
Nowdays with electronic ignition and carburation controls, properly
designing hopup parts is very challenging. Even if gains showup it often
is at the expense of driveability. One of my misadventures was a VW
Safari offroad vehicle
with pipe and carb and cam and porting that ran like back
the bear over 2,000RPM but had nothing under that. It was fun for
aggressive back country play but almost impossible to drive at street
speeds in town. I could have installed a TYPE II VW transmission and
higher numerically gears to get around that but would have lost mileage
and top end in the country.
Just my thoughts
Dale
PS Happy
Thanksgiving! |
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Dyno horsepower dale sailors, November 22 2010
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Re: Dyno horsepower George York, November 22 2010
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