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Registered
Join Date: Sep 2013
Location: Clayton, NC
Posts: 277
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901/911 Ring and Pinion
I’ve searched
Is there a source for new ring and pinion gears for the 901 / 911 transmissions? Otherwise, they are all at least 50 years old with unknown mileage / wear Thanks in advance |
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03-08-2023, 02:10 PM
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Albins is an aftermarket supplier. I do not have any experience with Albins but they have been represented by those more knowledgeable than I as suitable for track use. I think the expected useful life may be shorter than OEM. YMMV
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If you give your word: keep it. |
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03-08-2023, 02:55 PM
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Registered
Join Date: Jan 2015
Location: Stow, MA
Posts: 578
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Check with Matt at Guard Transmission.
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Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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03-08-2023, 05:42 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,542
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Quote:
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1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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03-09-2023, 05:46 AM
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Registered
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Location: Stow, MA
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Another option is Albins, a reputable supplier of transmissions and parts thereunto. In the US, Retro Sport is their distributor.
https://retro-sport.com/porsche-gears/porsche-901-904-gears/porsche-901-ring-pinion
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Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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03-09-2023, 09:11 AM
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PCA Member since 1988
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$4K? Ouch. I would not worry about a used R&P if the contact patterns are normal.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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03-09-2023, 12:30 PM
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Join Date: Sep 2013
Location: Clayton, NC
Posts: 277
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It's the line below the contact point
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03-09-2023, 01:32 PM
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Registered
Join Date: Sep 2013
Location: Clayton, NC
Posts: 277
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I posted this wear pattern which we believe the R-P are worn and as a result there is rear end noise. It is the extra line at the bottom of the gear tooth
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03-09-2023, 07:14 PM
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Registered
Join Date: Jan 2015
Location: Stow, MA
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Quote:
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Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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03-10-2023, 09:52 AM
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PCA Member since 1988
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Hah, hah. Yeah, I've discovered that over the many years I've owned Porsches. A couple thousand dollars here, a couple thousand dollars there--pretty soon you're talking about real money...
It just seems that the number of zeros have increased in the past few years. 
__________________
1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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03-10-2023, 12:07 PM
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Registered
Join Date: Sep 2013
Location: Clayton, NC
Posts: 277
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Anyone see a rub pattern like this?
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03-10-2023, 02:12 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,542
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Show us the condition of the pinion gear teeth. They touch 4 times for every time the ring spins once.
__________________
1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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03-11-2023, 12:11 PM
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