 Horsepower Ratings, Net...Gross...??? |
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| Tom73 |
 Mar 23 2005, 09:01 AM
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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... |
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| Jake Raby |
Mar 23 2005, 09:24 AM
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Net HP is what matters the most... BUT the thing that most people do not realize is that the factory engine was measuerd in DIN HP the European measurement system. Here we use SAE standards and thats why there is a difference in the power we see compared to the factory power numbers that are posted, measured in DIN...
The DIN HP of a 2 liter 914 spec engine is right at 100, but the most I have ever seen SAE on my dyno from a 100% stocker is 86HP and that was with a ton of tuning to achieve.. |
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Posts in this topic
Tom73 Horsepower Ratings Mar 23 2005, 09:01 AM
Tom73 So my '71 1.7 which is rated at 80 HP would be... Mar 23 2005, 09:48 AM Dave_Darling Hmm?? I thought that DIN and SAE Net specified di... Mar 23 2005, 02:13 PM Brando I thought gross HP ratings were when they bolted t... Mar 23 2005, 02:37 PM
Tom73 Mar 23 2005, 02:45 PM |
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