Horsepower Ratings, Net...Gross...??? |
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Horsepower Ratings, Net...Gross...??? |
Tom73 |
Mar 23 2005, 09:01 AM
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#1
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Member Group: Members Posts: 180 Joined: 20-September 04 From: Central Texas Member No.: 2,792 |
Was wondering about the HP ratings used for the 914 engines. Are they GROSS or NET rating. I know most of the American companies changed from Gross to Net around 1972, in the middle of the 914 production. So for comparitive purposes was wondering how the engine was rated?
(did a search on this topic to see if it had been discussed before but that came up empty.) tom... |
Dave_Darling |
Mar 23 2005, 02:13 PM
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#2
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914 Idiot Group: Members Posts: 14,991 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Hmm?? I thought that DIN and SAE Net specified different testing set-ups, so you could not do a direct mathematical conversion. You can guess at it, but the actual ratings might be different.
I know that the SAE Gross ratings were a very different test indeed--no accessories running, open intake and exhaust, pretty much every "cheat" you can apply to inflate the power ratings. IIRC, the 1.7 made about 90 SAE Gross HP and the 914-6 120 SAE Gross HP. Oh, and the US-spec 2.0 was rated at 95 DIN HP; it was the European version that was 100 DIN HP. --DD |
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