acceleration and traction peoblem, help
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From: somerset
acceleration and traction peoblem, help
Hi all, i have just had my series 2 put on the rollers and its got 166bhp at the flywheel and 122.5 at the wheel, does it sound like i am loseing to much through the transmission, also when i accelerate hard and the turbo comes in it feels like the clutch is slipping as the revs go right up but it is not burning it out, its on standard clutch running 12 psi with kent cam, please help
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From: HertFORDshire
12psi is not excessive for the stock clutch so I would guess it's either worn out or an oil seal is allowing oil onto the plate. Does it smell at all when the revs climb?
When you change the clutch don't forget to have the flywheel resurfaced
When you change the clutch don't forget to have the flywheel resurfaced
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From: Finland
When a car is tested on rollers, the power is measured from the wheels, only. The flywheel power is just assumed from the wheel power. So one can't really draw any conclusion from the difference between the two (35% in this case).
Oranoco, its not nessesery is it? unless its obviously badly fooked...
bearing in mind the power will be not alot greater than standard...
jamsport are doin mine today and they aint reserfacing the flywheel...
but my clutch isnt slipping at all so...
bearing in mind the power will be not alot greater than standard...
jamsport are doin mine today and they aint reserfacing the flywheel...
but my clutch isnt slipping at all so...
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From: naam TOTNAAM
Hello Mate
Unfortunately it sounds as though you've been to one of the many 'race tuned' rolling roads out there.
The ONLY way to calculate flywheel bhp is from the Wheel bhp NOT vice versa a fairly acurate yard stick (it does vary slightly for a variety
of reasons) is to take your Wheel bhp and DEVIDE it by .85
therefore if your wheel bhp was 122.5 your flywheel bhp was actually
144.1.
I know this is not good news but,
1, you now know that the operator is either full of the brown stuff
or more likely doesn't understand basic physics.
2,Just like Oranco above pay Jamie at Jamsport a visit and see how
a real pro works and the difference it'll make to your car.
Hope this helps
The Dr
Unfortunately it sounds as though you've been to one of the many 'race tuned' rolling roads out there.
The ONLY way to calculate flywheel bhp is from the Wheel bhp NOT vice versa a fairly acurate yard stick (it does vary slightly for a variety
of reasons) is to take your Wheel bhp and DEVIDE it by .85
therefore if your wheel bhp was 122.5 your flywheel bhp was actually
144.1.
I know this is not good news but,
1, you now know that the operator is either full of the brown stuff
or more likely doesn't understand basic physics.
2,Just like Oranco above pay Jamie at Jamsport a visit and see how
a real pro works and the difference it'll make to your car.
Hope this helps
The Dr
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