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Registered
Join Date: Nov 2005
Location: brampton, ontario
Posts: 67
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915 final drive
How difficult is it to change the final drive in a 915. I'm referring to a 1972 and on
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03-24-2007, 10:43 AM
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Registered
Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 4,184
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I'm guessing you want to go from 7.31:1 to 8.31:1 final drive?
It's quite quick, simple and easy if you swap the gearbox completely for another one with that ratio... You could change all the gearsets, that's $$$$$. As I understand it, changing out the crown wheel and pinion is not a DIY job unless you're skilled, inventive, resourceful and knowledgable - it requires special tools. I asked a very experienced Porsche independent if he could fit a WEVO side cover on my 915, his reply was "I'd need to shim it afterwards, I haven't done one in 20 years and I don't have the tools anymore". I took it to a gearbox specialist instead. Good luck!
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'77 S with '78 930 power and a few other things. |
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03-24-2007, 01:06 PM
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Irrationally exuberant
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Your 1972 has a mechanical speedo drive.
I think there was only one year with a mechanical speedo drive and 8:31 R&P ('75? '76?). I just helped a friend do this swap. -Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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03-24-2007, 02:48 PM
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The Blue Pheonix
