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clutch bedding in questions..

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Old 04 May 2010, 09:23 AM
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eggy790
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Default clutch bedding in questions..

ok just got a clutch fitted on thw twinscroll along with decat downpipe and fuel pump etc.

mapping is on sunday..

i planned on having the car parked up till then but someone said the clutch needs bedding in before mapping?

is this true, should i drive it around under 3krpm for a bit?

cheers
Old 04 May 2010, 09:53 AM
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Evo Bizz
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Lots of normal driving with plenty of gear changes, avoid slipping as much as you can.
Old 04 May 2010, 10:12 AM
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budd
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alot depends on the actual make / type of clutch fitted, I fitted a cheap American paddle in my old SX200 and they recommended an extended running in period of around 500miles I did this and had no issues with even though it was handling over 350ftlbs of torque, I subsequently read about others who’d had issues with this particular type of clutch and to a man they hadn’t followed the running in advice, and consequently had problems handling less power and torque, some form on running in just to get all the friction surfaces mated up right as got to be good for the longevity, and as previously said gentle normal running with smooth gear changes and no hill starts etc is the best way, but as for how long you need to do this before giving it some stick I’m not sure so follow the advice of the manufacturer
Old 04 May 2010, 10:24 AM
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urban
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For what its worth.
I had a clutch replaced under warranty in an MY00 turbo 2000
I distinctly remember asking garage if bedding in was needed - they said just don't launch it.

That car for sure was not kept under 3K and never gave problems.
Old 04 May 2010, 10:36 AM
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The clutch is only engaged whilst changing gears, it has no other function otherwise, just dont do standing starts and dont slip it, you can drive at 6k rpm, just be gentle with the changes for a short while

Tony
Old 04 May 2010, 11:03 AM
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eggy790
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ok well i'll try and do 50 or so normal miles in it before staurday, i'll take it work, should be fine

p..s its an exedy pink box clutch
Old 04 May 2010, 01:37 PM
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porteouz
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Could be a newbie question here but

The clutch is only engaged whilst changing gears, it has no other function otherwise, just dont do standing starts and dont slip it, you can drive at 6k rpm, just be gentle with the changes for a short while
If thats the case why does a dodgy clutch slip in high revs? Isnt a clutch only disengaged when changing gears?

When i got my clutch done for the first 500 it didnt feel 'quite right' but after 1000 + it feels superb

Last edited by porteouz; 04 May 2010 at 01:54 PM.
Old 04 May 2010, 08:21 PM
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eggy790
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just driven the car 10 miles, bloody hell that clutch is hard.. its kind of on or off no bite and it judders a bit
Old 04 May 2010, 08:56 PM
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Correct, the clutch is disengaged when the pedal is pressed which allows the shift. At all other times the clutch is engaged.

Originally Posted by porteouz
Could be a newbie question here but



If thats the case why does a dodgy clutch slip in high revs? Isnt a clutch only disengaged when changing gears?

When i got my clutch done for the first 500 it didnt feel 'quite right' but after 1000 + it feels superb
Old 05 May 2010, 12:37 AM
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budd
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Originally Posted by eggy790
just driven the car 10 miles, bloody hell that clutch is hard.. its kind of on or off no bite and it judders a bit
did you check / change the flywheel?
Old 05 May 2010, 07:47 AM
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eggy790
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hi mate, yes flywheel was checked and cleaned up, and mechanic said it was perfect.
Old 05 May 2010, 08:45 AM
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budd
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I guess it depends on how bad it is, maybe it does need 'some running in' to settle down and become smooth, this type of single plate, full segment organic clutch should have broadly similar driving characteristics so the OE, it's only when you get to multi plate or paddle clutches that you expect a certain amount of judder, tricky biting point and on /off feel etc,
I think all you can do is get some miles on it and hope it improves.

Last edited by budd; 05 May 2010 at 08:46 AM.
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