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Power loss from factory
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www.perth-wrx.com Last edited by crawl3r; 05-09-2013 at 06:24 PM. |
#2
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Engine Dyno at factory compared to hub/roller dyno with drivetrain losses
So technically your "on paper" result from factory would more be around 240-250kw etc etc 7 years down the track with all your mods. Last edited by RichX; 31-03-2013 at 05:35 PM. |
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www.perth-wrx.com Last edited by crawl3r; 05-09-2013 at 06:23 PM. |
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yep, you understand correctly
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Bitches love cardigans |
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I'm probably way off with these figures but I think you loose around 20% through the driveline. So your 205 at the engine is likely around 160kw at the hubs.
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even taking off 20% is not very accurate as different cars have different drivetrain configurations like awd etc. The power loss comes from the clutch, seal drag, gear meshing, bearings, bushings and windage (drag on the gears caused by the gear oil) It all adds up.
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could even say, if you wanted to get seriously anal deep, some microscopic loss could be caused by the viscosity of the oil used in the gearbox.
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#8
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Area under the curve > poxy peak numbers.
Does it even do a skid, bro?
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GTB Liberty (31-03-2013) |
#9
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Engine dyno - measurements are taken directly off the back of the flywheel. Compare this to how it would have looked on the hub dyno when you had your Verso
As has been mentioned several times, there is losses in drivetrain, coming from friction, heat, noise, not to mention the power lost turning everything before it gets to the wheels. There is no set number for drivetrain loss, it will be different for every car. Its also not a percentage, as there is no way a car losing 20% of its power with 200kw (40kw) is losing 20% of its power with 800kw (160kw) through the identical drive train. We say it on here about every week, a dyno is useful for comparison ONLY with the exact same dyno under the exact same conditions. Comparing against different dynos in different locations will always lead to butthurt
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MY93 Impreza GX 1.8L, 0hp, 0nm Last edited by jEstEr?; 01-04-2013 at 08:46 AM. |
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www.perth-wrx.com Last edited by crawl3r; 05-09-2013 at 06:23 PM. |
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factory, loss, power |
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