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Join Date: Jun 2003
Location: Chelmsford, MA
Posts: 872
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Disappearing gears?
My 911 is the only early 911 with a 901 that I've ever driven, so I'm not sure how much of this is normal vs something being wrong.
Shifting is painfully bad. The transmission doesn't grind, but I get problems where sometimes it gets stuck in second and I really have to pop it to get it back out, and sometimes I simply can't find first... Now I've got a LOT of slop in the shifter. Not sure if I've got bad bushings or not. The previous owner said he had rebuilt the shifter mechanism with a short-shift kit and new bushings recently, no idea if he might've done it wrong. In my S4, disappearing gears can be a sign of a misaligned shift mechanism. Is that true with the 901 too? Are there any adjustments that might help that? Another reason I'm not sure the P.O. rebuilt the shift assembly correctly is that I've got definite spring tension from vertical moving left, but it freely flops from vertical right. Is that normal? What about this sticking in 2nd thing?
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1968 911L 2004 Dodge Dakota SLT Plus |
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08-28-2003, 02:34 AM
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Bushings and coupler along w/ adjustment are fairly easy to check. When done right they make a huge difference as long as the trans itself is in god shape. I highly recommend a zero clearance front bush and a zero slop brass coupler. I had these parts made, but I believe they are also available off the shelf(where I don't know)
 They make a huge difference
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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08-28-2003, 04:14 AM
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I made mine out of Delrin....and no slop in the system at all.
Bob
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Bob Hutson |
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08-28-2003, 06:49 AM
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What parts are those?
I'm a noob, here. Talk slowly 
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1968 911L 2004 Dodge Dakota SLT Plus |
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08-28-2003, 07:01 AM
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Location: Las Cruces, NM
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The parts hook the shifter to the shift rod coming out of the gearbox. The less play they have the less play your shifter will have.
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2007 Mazda 3 hatch 1972 Porsche 914 roller with plenty of holes to fix 
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08-28-2003, 07:14 AM
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The bushing in the front guide is self explanatory, just zero play. Here is a pic of the brass pieces installed in the stock coupler. Again zero play. Makes for nice clean solid, shifts, w/ no vagueness. I also doubled the spring tension in the shift tower springs.
 You might also check to be sure that the pinch bolt isn't stripped, that can cause some symptoms that you described.
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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08-28-2003, 07:45 AM
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You can buy 914 bushings for the coupler. They are zero play. Look just like those. I have them in mine. PP sells them, last time I checked.
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"I understand that you want to drive fast, it's just that I want to go faster!" Move ova please Chad aka "Chili" 1974 Base coupe in Carrera outfit. No A/C, no Sun Roof, no power windows. Fast and light, just the way I like it. (Sad to say, it's sold. But at least it remains with us on this board.) My car http://www.pelicanparts.com/gallery/CHILI 1969 RSR Project. Heavy on the word PROJECT! No pictures yet. Keeps breaking lenses of cameras. |
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08-28-2003, 08:03 AM
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Here's the PP part # for the no slop coupler bushings.
C-424-223-90
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"I understand that you want to drive fast, it's just that I want to go faster!" Move ova please Chad aka "Chili" 1974 Base coupe in Carrera outfit. No A/C, no Sun Roof, no power windows. Fast and light, just the way I like it. (Sad to say, it's sold. But at least it remains with us on this board.) My car http://www.pelicanparts.com/gallery/CHILI 1969 RSR Project. Heavy on the word PROJECT! No pictures yet. Keeps breaking lenses of cameras. |
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08-28-2003, 08:10 AM
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slide seats forward and get in back seat. take off the screen thing that sits on the floor/wall between/behind the seats. look at the shift coupler (see bill's pic #2 above). i suspect you will be able to grab it and move it all around due to cracked and smooshed bushings. look on the floor of that little tunnel. bet there is fluid/crap there. take a look and get back to us.
joe 68 L |
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08-28-2003, 09:33 AM
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I'll do that. There may be fluid/crap in there... I noticed something dripping from that area under my car. Right before I bought it, the P.O. had a seal on the transmission (I think) replaced back there because of the leak. Might be leaking again, although that'd really irritate me.
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1968 911L 2004 Dodge Dakota SLT Plus |
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08-28-2003, 10:04 AM
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It doesn't appear to be those bushings... they look new, so the PO must've replaced them when he had his motor rebuilt.
Zero play in the rear there... but if I hold the coupler still, the shifter itself wobbles all over the place, still, so presumably its something up there. Tips what to look for?
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1968 911L 2004 Dodge Dakota SLT Plus |
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08-31-2003, 08:09 AM
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08-31-2003, 08:12 AM
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1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
Harley
1974 Porsche 911 2.9
1968 Porsche 911L Targa Sportomatic 2.0 Liter
