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931 bellhousing conversion ?

 
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anthonimartini  



Joined: 17 Feb 2020
Posts: 240
Location: portland oregon

PostPosted: Sun May 02, 2021 1:54 am    Post subject: 931 bellhousing conversion ? Reply with quote

on my 79 NA i am converting to use the 931 hydraulic clutch, everything is pretty straight forward but i have both a 931 lsd gearbox and the na snailshell. my 20mm torque tube has only 30k on it and the 25mm has some issues i would like to put the lsd into my NA gearbox and use the 20 mm torque tube with the 931 bell and flywheel. this would then use the crankshaft mounted pilot bearing and the 20mm clutch. anybody done this, i cant really see any issues doing this other than a very slight diameter difference in the clutch disc. the outer diameter of the disc is a bit smaller which wont be a problem but the friction surface diameter towards the splines is also slightly smaller which cause it to slightly over hang the flywheel surface by about 2 mm. im sure this will work but may cause chattering issues. i could machine the flywheel to match the clutch.

has anybody run this setup which in short is swapping a 931 hydraulic clutch and bell into a na chassis with 20mm torque tube.
_________________
ive saved alot of 924's
current:
79 MochaSchwartz 931
83 944
87 924S
Instagram @anthoni.jpeg
formerly known as turbellion, lost password.
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anthonimartini  



Joined: 17 Feb 2020
Posts: 240
Location: portland oregon

PostPosted: Mon May 03, 2021 1:48 pm    Post subject: Reply with quote

nevermind all that im going to use the 25mm torque tube, my 20mm 30k one ended up having dry bearings that sound like a rollerskate wheel.
_________________
ive saved alot of 924's
current:
79 MochaSchwartz 931
83 944
87 924S
Instagram @anthoni.jpeg
formerly known as turbellion, lost password.
Back to top
View user's profile Send private message
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