Water Injection Thread

Mon Jan 4 07:07:24 GMT 1999

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Gary Derian wrote:

> A couple thoughts:
>
> Transmissions only see  torque.  Power ratings are not technically correct.
> If someone is rating a trans for power, find out the rpm range and calculate
> the torque they really mean.  The only effect power has is to heat up the
> lube.  An oil cooler can fix that problem.  Usually its the output side that
> breaks when in 1st gear due to the torque multiplication.
>
>

Just a note: considering the torque curve of your engine might not be a bad idea
when selecting a transmission.  When BMC (or whoever they were at that point)
converted the old (!) B-series engine for diesel use, they began breaking
transmissions due to the high cyclic torque output of the engine - in other
words, the torque was powerful enough at low RPM to break things because it was
applied in a few strong, slow, individual pulses, not in many weaker pulses as a
gasoline engine would to produce the same torque output at a higher RPM.

Just my two cents

Aaron

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Gary Derian wrote:
<BLOCKQUOTE TYPE=CITE>A couple thoughts:
Transmissions only see&nbsp; torque.&nbsp; Power ratings are not technically
correct.
 If someone is rating a trans for power, find out the rpm range and
calculate
 the torque they really mean.&nbsp; The only effect power has is to
heat up the
 lube.&nbsp; An oil cooler can fix that problem.&nbsp; Usually its the
output side that
 breaks when in 1st gear due to the torque multiplication.
 &nbsp;
 &nbsp;</BLOCKQUOTE>
Just a note: considering the torque curve of your engine might not be a
bad idea when selecting a transmission.&nbsp; When BMC (or whoever they
were at that point) converted the old (!) B-series engine for diesel use,
they began breaking transmissions due to the high cyclic torque
output of the engine - in other words, the torque was powerful enough at
low RPM to break things because it was applied in a few strong, slow, individual
pulses, not in many weaker pulses as a gasoline engine would to produce
the same torque output at a higher RPM.
Just my two cents
Aaron</HTML>

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