 Rebuilt transmission shifting issues, Molasses Fore Aft movement |
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| echocanyons |
 Nov 11 2010, 08:40 PM
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#1
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Advanced Member  Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California 
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I'm having transmission shifting issues with the box that I rebuilt (I rebuilt this at one of Dr. Evil's clinics so I know it's good) .
The main issue is that the fore and aft movement feels like molasses. The transmission has been in for a week or two and initially the shifting was smooth. I'm guessing the issue is the shift console at the transmission but I would like the groups opinion. Is there anywhere along the shift rod that needs greased? |
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| Dr Evil |
Nov 11 2010, 09:22 PM
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#2
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region
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If it is bad now and was recently good, look externally. Especially if it is all fore and aft movement. You may be impinging on something under the car, or a bushing may be screwed up.
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| Cap'n Krusty |
Nov 11 2010, 09:55 PM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Like the shift rod is the only thing keeping the engine from falling on the ground?
The Cap'n |
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| Derek Seymour |
Nov 12 2010, 03:44 AM
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#4
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Member Group: Members Posts: 394 Joined: 10-March 09 From: Yucaipa Member No.: 10,151 Region Association: Southern California |
QUOTE(Cap'n Krusty @ Nov 11 2010, 07:55 PM)  Like the shift rod is the only thing keeping the engine from falling on the ground? The Cap'n Translation: Check your engine and tranny mounts. While you are at it check all the shift bushings. |
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| echocanyons |
Nov 12 2010, 10:38 PM
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#5
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Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California
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I had the good fortune (IMG:style_emoticons/default/shades.gif) of changing my engine mounts when I switched the transmission. For reference on my car which is a sideshifter, the rubber engine mounts were completely sheared from the top bolts and the whole of the engine was not connected in any way to the engine bar other than by gravity.
With this situation there was still no way for the engine to rest on the shift bar and the shifting was very light and smooth except for a crunching sound when prior to 1-2 gear engagement (IMG:style_emoticons/default/huh.gif). The trans mounts were in fine shape. The bushings looked good upon inspection before the install, but I will check them again and report back. Attached thumbnail(s) 
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| Dr Evil |
Nov 13 2010, 11:11 AM
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#6
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region
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The easiest way to localize your issue is to remove the cone screw at the fire wall and then pull the external shifter coupler off of the internal rod. Move the stick around and see if you feel resistance. You can remove the cone screw at the tranz as well and then try hand shifting it at the box. Before that, bit the bushings at the side shifter and fire wall with some penetrating oil or WD40 and see if there is any change.
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| echocanyons |
Nov 13 2010, 01:13 PM
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#7
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Advanced Member Group: Benefactors Posts: 2,094 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California
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I think I found the culprit. The firewall bushing had partially exploded and was trying to move with the shift bar.
I don't think that that is secondary to another issue, just weird timing. |
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| Drums66 |
Nov 13 2010, 01:50 PM
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#8
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914 Rudiments Group: Members Posts: 5,321 Joined: 15-January 03 From: Coronado,Cali Member No.: 151 Region Association: Southwest Region |
QUOTE(echocanyons @ Nov 13 2010, 11:13 AM) I think I found the culprit. The firewall bushing had partially exploded and was trying to move with the shift bar. I don't think that that is secondary to another issue, just weird timing. ...Crunched bushing??(in my thoughts) (IMG:style_emoticons/default/idea.gif) (IMG:style_emoticons/default/shades.gif) (IMG:style_emoticons/default/bye1.gif) Glad you found it!(I always lube them,for slippage) |
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