 Hard shifting when hot..., what is normal cause of this? |
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| porsche735 |
  Sep 15 2003, 10:56 AM
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#1
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Member  Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127  |
When teh engine and transmission are cool, everything shifts just fine. I have noticed, that as the transmission heats up, it gets harder to shift (mostly into the gears on the "bottom" of the selector (3rd and 5th). I have heard of others with this problem, but can't remember what the general "patt" answer is. Something tells me it is the ring and pinion depth, but I am not positive.
Can someone help? thanks, Chris |
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| SirAndy |
Sep 15 2003, 11:06 AM
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#2
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Resident German Group: Admin Posts: 41,638 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
when was the last time you changed "se oel" in your tranny?
is it a stock 901? if the oil is old (meaning, you can't remember the last time it was changed), get the guud blue schtuff (swepco) and fill her up ... Andy |
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| porsche735 |
Sep 15 2003, 11:09 AM
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#3
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Member Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127 |
Brand new Swepco 201. It's not the oil....
Chris |
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| SirAndy |
Sep 15 2003, 11:22 AM
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#4
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Resident German Group: Admin Posts: 41,638 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
damm, that would have been too easy (IMG:style_emoticons/default/smile.gif)
sooo, something is expanding, either inside the tranny or outside alongside the shift-linkage. do you have solid tranny mounts? Andy |
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| porsche735 |
Sep 15 2003, 11:55 AM
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#5
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Member Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127 |
Solid mounts. We just rebuilt the tranny and it shifted beautifully when first installed. However, we are getting a bit of a whine. Most we have talked to said it is normal, but I think it may be getting a bit worse which is why I think the Pinion depth setting may be off... But, I am not sure this could cause hard shifting.
Chris |
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| tat2dphreak |
Sep 15 2003, 11:57 AM
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#6
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region  |
mine did the same thing... I replaced all of the bushings and things are MUCH better
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| Neal |
Sep 15 2003, 11:59 AM
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#7
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Member Group: Members Posts: 300 Joined: 23-April 03 From: Sammamish, Washington Member No.: 605 |
What bushings, the shift linkage or internal tranny ?, I have the same symptoms and I have new shift lnkage bushings.
Neal |
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| tat2dphreak |
Sep 15 2003, 12:00 PM
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#8
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region |
I replaced the linkage bushings....
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| SirAndy |
Sep 15 2003, 12:05 PM
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#9
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Resident German Group: Admin Posts: 41,638 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(porsche735 @ Sep 15 2003, 10:55 AM) Solid mounts. We just rebuilt the tranny and it shifted beautifully when first installed. However, we are getting a bit of a whine. Most we have talked to said it is normal, but I think it may be getting a bit worse which is why I think the Pinion depth setting may be off... But, I am not sure this could cause hard shifting. the whine is somewhat normal. with the solid mounts, the shift-linkage does not have a lot of play and it could bind somewhere when everything gets hot and expands. that's the first thing i would check. get the thing hot and see if there's any unsual tight spots in the linkage. if that doesn't help, it's gearbox disassembly for dinner (IMG:style_emoticons/default/chowtime.gif) Andy |
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| porsche735 |
Sep 15 2003, 12:20 PM
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#10
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Member Group: Members Posts: 189 Joined: 10-January 03 From: Los Altos, CA Member No.: 127 |
I have new bushings including a special bronze bushing at transmission.. I don't think it is anything external to the transmission as none of that has really changed...
Chris |
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