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Join Date: Sep 2017
Location: Long Beach CA
Posts: 107
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915 Transmission Side Cover Upgrade
I have a 73 911 with a 915 transmission magnesium side cover and want to replace it with the stronger aluminum side cover with the extra inner rib.
What are the step to make the side cover change? Last edited by lifeonmars; 02-26-2023 at 10:58 AM.. |
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02-25-2023, 08:28 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,562
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To do it right you’ll need to reset the bearing preload and backlash.
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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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02-26-2023, 06:48 AM
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Matt. when my 915 Gearbox is full of 210 (to the side port). will that cover the gears partially at least? I am concerned that longer term storage with some on gears not being in oil, will damage it due to condensation buildup etc.. this is the box with active first gear I just got from winders. should I overfill it?
apologies for the hijack. btw. I was told that as long as you are careful, you can swap side plates without resetting pre had etc.... |
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02-26-2023, 08:42 AM
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pre-load
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02-26-2023, 08:43 AM
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Join Date: Jun 2022
Location: Chattanooga, TN
Posts: 158
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I have an aluminum one if you’d like to buy it. I just upgraded mine to a wevo.
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02-26-2023, 09:03 AM
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Location: Long Beach CA
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Thank you all for the help.
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02-26-2023, 10:55 AM
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sgroer. who made the aluminum one?
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02-26-2023, 04:50 PM
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Join Date: Jan 2015
Location: Stow, MA
Posts: 580
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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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02-26-2023, 06:01 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,562
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Quote:
On the storage, you’ll want to leave it in neutral and spin the mainshaft by hand once in a while to rotate the gears through the oil and keep them coated.
__________________
1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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02-27-2023, 06:16 AM
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thank you matt! ��
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02-28-2023, 05:47 PM
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Join Date: Dec 2021
Posts: 124
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I’d consider the CMS side plate: https://californiamotorsports.net/products/cms-915-billet-side-plate
I used all their parts to build my race spec 901 trans and am very satisfied as a customer. |
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03-01-2023, 06:46 AM
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PCA Member since 1988
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Unless you live in the swamp, don't worry about corrosion inside your transmission. The gear oil leaves enough of a coating to prevent corrosion for years. Mine is living proof.
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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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03-01-2023, 11:44 AM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,562
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Quote:
__________________
1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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03-01-2023, 11:56 AM
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PCA Member since 1988
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That makes me wonder how the moisture got in there. Or does he live on the beach in Florida?
__________________
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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03-01-2023, 12:31 PM
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Registered
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Location: Stow, MA
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Quote:
  
__________________
Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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03-01-2023, 03:25 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,562
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Quote:
__________________
1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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03-01-2023, 03:48 PM
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thanks matt. you are correct. jeez I am still paying for that huge error. to the tune of 8000 bucks returned to the purchaser.......( which I could have blown off, but not my style..) nothing that I thought I did wrong other than store it outside, covered, in PA winters (back when we actually had winters) ( Btw this was a short geared rather trick race G50-01 gearbox). it had delvac in it . but might have somehow got moisture inside. I DID powerwashe the thing before storage . ... I did not routinely spin the mainsheet. indeed I am badly bitten..... and highly concerned about storing a spare gearbox properly.....
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03-01-2023, 03:56 PM
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jm. that CMS plate looks very nice and sturdy. Just for good measure I will have the preload etc redone. Matt, as the resident guru, do you endorse this CMS plate?
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03-01-2023, 03:58 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,562
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Quote:
__________________
1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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03-01-2023, 04:09 PM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,887
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Quote:
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Scott Winders PCA GT3 #3 2021 & 2022 PCA GT3 National Champion 2021 & 2022 PCA West Coast Series GT3 Champion |
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03-01-2023, 05:15 PM
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