This is topic How Much HP Loss From Crank To Rear Wheels in forum Tech Talk at Northern California Ford Owners  .


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Posted by FORD POWER (Member # 7860) on :
 
What is the percentage of HP that you would loose from your flywheel HP to RWHP?
 
Posted by 92stangLX (Member # 3252) on :
 
Depends on if it's a manual or auto. I think manual is like %15. Auto is more
 
Posted by getjobdone (Member # 4666) on :
 
yeah, i have heard parasitic drivetrain power loss is something like 12-14% for manual and 15-17% for an auto.
 
Posted by red GT black rallyes (Member # 4495) on :
 
I usually figure 20% to be safe [Big Grin]
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by getjobdone:
yeah, i have heard parasitic drivetrain power loss is something like 12-14% for manual and 15-17% for an auto.
You would probably have to factor in the torque converter - lockup vs. non lockup on the auto also. With an auto Your best bet on guesstimated HP is to weigh Your car and get some MPH reading's at the strip.
 
Posted by Larry (Member # 5176) on :
 
Muscle Mustangs and Fast Fords did an article on this a few months ago..They ran the same car with a Std. Tranny and Auto Tranny.In this test the Std. lost lost more rwhp than the Auto.Alot depends on the Tranny.

According to the engineers At Mustang Dyno (I have a letter reflecting this info) the std loss is About 25% for both auto and std.Keep in mind your flywheel,drive shaft,rearend ,tire size all act on the rwhp ratings.
 




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