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 R56 N12 vs N14 clutch interchange

 Created by: 951RACER
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 Posted: Oct 20, 2017 11:06AM
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Quote:
Originally Posted by 951RACER
Thanks for the response
the pressure plate is Much thinner on the N14 S, because the disc is very thin, contact surface is thickest section except for the spline center. The flywheel -pressure plate assy's are very close in size so i didn't measure them critically. tomorrow i am disassembling and will critically measure both sets, N12 nonS and N14 S.
Ok, let us know what you find.

Ken

 Posted: Oct 20, 2017 08:17AM
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Thanks for the response
the pressure plate is Much thinner on the N14 S, because the disc is very thin, contact surface is thickest section except for the spline center. The flywheel -pressure plate assy's are very close in size so i didn't measure them critically. tomorrow i am disassembling and will critically measure both sets, N12 nonS and N14 S.

 Posted: Oct 20, 2017 07:57AM
Total posts: 2271
Last post: May 23, 2023
Member since:Dec 29, 2004
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Quote:
Originally Posted by 951RACER
I have a justa cooper, 2010 N12 with 6sp trans. it had the 200mm flywheel/clutch. Would a clutch package for a N14 work?
Say a Cooper S N14 228mm dual mass with unsprung clutch disc? I thought so, all fits but engine wont turn over after i tightened the trans to engine. Don't think its the Clutch is pushed against the flywheel, but maybe. I can feel the pressure plate disengageing the clutch.
Also if i spin one axle with trans in neutral, the other axle spins the same direction. flywheel bolts are the proper torxs 9x25mm
thanks for any help
this car is far more complicated than my old 944 Porsche turbo
lloyd
The first thing that comes to mind is the difference in overall thickness of the flywheel and clutch assembly.  The solid flywheel on the N12 is quite a bit thinner than the dual mass unit on the N14.  I don't recall if the pressure plate assembly on the N14 is 'thinner' to compensate for the thicker flywheel....  Could the pressure plate housing be making contact with the bell housing?

ken

 Posted: Oct 20, 2017 05:57AM
Total posts: 1
Last post: Oct 20, 2017
Member since:Oct 20, 2017
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I have a justa cooper, 2010 N12 with 6sp trans. it had the 200mm flywheel/clutch. Would a clutch package for a N14 work?
Say a Cooper S N14 228mm dual mass with unsprung clutch disc? I thought so, all fits but engine wont turn over after i tightened the trans to engine. Don't think its the Clutch is pushed against the flywheel, but maybe. I can feel the pressure plate disengageing the clutch.
Also if i spin one axle with trans in neutral, the other axle spins the same direction. flywheel bolts are the proper torxs 9x25mm
thanks for any help
this car is far more complicated than my old 944 Porsche turbo
lloyd