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Author
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Topic: what does sae net horsepower mean??
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70bbstang
Journeyman Posts: 48
From: redondobeach CA usa
Registered: Mar 2003
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posted 06-09-2003 07:11 PM
   
just wonderin 
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V8 Thumper
Gearhead Posts: 3467
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 06-09-2003 07:53 PM
Horsepower at the tires; after parasitic losses sustained in the drivetrain (10-20% depending on effeciency of gearbox and differential) ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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mustangboy
Gearhead Posts: 652
From: Ont, Canada
Registered: Mar 2002
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posted 06-09-2003 11:50 PM
It is my understanding that net hp(at least when they first changed it from Gross) was the hp of the engine as it was installed in the car.SO it would have exhaust,air cleaner,fan and all pulleys and accesories,basically just the way it would sit in the car.The old 71 and earlier(Gross hp)ratings where just the barebones engine driving no accesories and no exhaust etc.I still think the 72 and later ratings are at the flywheel though and not at the rear wheels.------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker http://mustangsandmore.50megs.com/MembersPics/mustangboy.html
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Moneymaker
Administrator Posts: 19704
From: Lyons, IL, USA
Registered: May 99
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posted 06-10-2003 09:48 AM
The second answer is the correct one.
SAE net is flywheel horsepower with full emission controls, 87 octane fuel, exhaust, accesories, belts etc.
Just the way it would be installed in a car/truck.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
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