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Registered
Join Date: Jul 2021
Posts: 637
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915 - North-South Slop?
Video
Shift order: 3rd-1st-3rd I've got an '81 911 SC with the original 915 transaxle in it. It's got a Wevo shifter installed, and I noticed recently that the fore-aft motion has quite a bit of slop... But only in 3rd, 4th, and 5th. I filmed a quick video showing the difference between 3rd and 1st gear. Is this normal, or do I have something worn in the tranny? |
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10-03-2022, 07:11 AM
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Registered
Join Date: Jan 2015
Location: Stow, MA
Posts: 590
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Possibly inside the transmission, but a bit hard to imagine unless for example the shift fork bolts fell out or the shift detents evaporated. If you can, check the action at the selector rod entering the transmission. There's a tool for this, you probably don't want to buy it, but it grabs the selector shaft and is great for bench-testing a serviced transmission.
More likely to be an issue outside the transmission.
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Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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10-03-2022, 09:26 AM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,899
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Look at the ball cup plastic bushing at the bottom of the shift lever. If that is cracked or broken in half, that is what you will get. You can tell by looking at the coupler while moving the shift lever. If the lever moves but the coupler does not, it's most likely the ball cup bushing.
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Scott Winders PCA GT3 #3 2021 & 2022 PCA GT3 National Champion 2021 & 2022 PCA West Coast Series GT3 Champion Last edited by winders; 10-03-2022 at 12:51 PM.. |
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10-03-2022, 10:36 AM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,899
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I just went out and looked at my Rennshift setup. When I am in 4th gear, I get about the same amount of free play you do in 3rd and 4th gear and in 1st gear. 1st gear has less free play than 3rd or 4th.
What I would do is make sure the shifter has almost no free play compared to what you see at the coupler at the back of the tunnel. There should be almost no play between what you do at the shift and see at the coupler.
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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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10-03-2022, 02:30 PM
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Registered
Join Date: Jul 2013
Location: Brisbane, Australia.
Posts: 2,700
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Quote:
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Always learning. www.aircooledporsches.com.au |
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10-05-2022, 01:38 PM
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Racer
Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,899
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Let's not forget that you want some free play there.....
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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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10-05-2022, 03:57 PM
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Coram Deo
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The original shift coupler (under the cover on the floor between the back seats) has oval holes to provide north-south slop. If your shift coupler hasn't been updated, that's the first place to look.
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Dru 1980 911SC Targa Petrol Blue Metallic Cork special leather Sport Seats Limited Slip 964 Cams SSIs Rennshifter 1990 250D Opawagen 1995 E220T Sportline Familienwagen 1971 280SE Beverly... hills that is 1971 Berlina 1750 Faggio |
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10-08-2022, 01:19 PM
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Bella Macchina
Blue Bus
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