Weird issue with shifting, Solved! |
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Weird issue with shifting, Solved! |
914itis |
Jun 6 2014, 12:02 PM
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#1
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
My shift linkage is well sync , no grinding at all and smooth shifting. All my bushings are new, shift rod cone screws are all tight in there .
Here is the issue. If I am driving the car a bit aggressive, sometimes I would loose 4th and 5th, if I quickly move the shifter in neutral left and right (jiggle)a few times, they come back. My guest is clutch cable adjustment or shifter itself. Any ideas ? |
stugray |
Jun 6 2014, 12:20 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
QUOTE If I am driving the car a bit aggressive, sometimes I would loose 4th and 5th Check your motor mounts. If aggressive driving makes it do it, your engine could be moving around and changing the shift rod alignment. |
SirAndy |
Jun 6 2014, 12:48 PM
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#3
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Resident German Group: Admin Posts: 41,815 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
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Dr Evil |
Jun 6 2014, 02:53 PM
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#4
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Send me your transmission! Group: Members Posts: 23,032 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
(IMG:style_emoticons/default/agree.gif) If not those, verify your coupler at the fire wall is in good shape, too. Inspect it closely as it will look ok and will crumble easily when messed with when it is old. |
914itis |
Jun 6 2014, 03:18 PM
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#5
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
All mounts are new. Motor mount is the six conversion from Rich Johnson, installed about six months ago and about 1000 miles.
Firewall bushing is the tangerine ( I think bronze ) that rivets to the firewall and was install the same time as the engine mount. Transmission mount is new as well. I will double check to make sure there is nothing loose. Thanks all |
toolguy |
Jun 6 2014, 03:22 PM
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#6
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Senior Member Group: Members Posts: 1,273 Joined: 2-April 11 From: San Diego / El Cajon Member No.: 12,889 Region Association: Southern California |
Does the trouble happen when you're going straight or when in a turn. .
If only when turning hard, then maybe body flex. . My experience is bad clutch adjust is usually mostly prevalent when going into 1st at a standstill. . You may want to try changing the shift shaft joint one spline over in the tunnel at thre joint and see if that makes an improvement. . . and the 1st / rev plane still works OK |
Mike Bellis |
Jun 6 2014, 03:35 PM
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#7
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Resident Electrician Group: Members Posts: 8,346 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
My shift linkage is well sync , no grinding at all and smooth shifting. All my bushings are new, shift rod cone screws are all tight in there . Here is the issue. If I am driving the car a bit aggressive, sometimes I would loose 4th and 5th, if I quickly move the shifter in neutral left and right (jiggle)a few times, they come back. My guest is clutch cable adjustment or shifter itself. Any ideas ? Could be the rod coupling below the shifter. Perhaps not tight enough and jumping a spline. (IMG:style_emoticons/default/confused24.gif) |
SirAndy |
Jun 6 2014, 03:46 PM
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#8
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Resident German Group: Admin Posts: 41,815 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
If only when turning hard, then maybe body flex. ^^^ That ... If it only happens in corners, your body is flexing to the point where the shift rod gets in a bind. BTDT. (IMG:style_emoticons/default/popcorn[1].gif) |
r_towle |
Jun 6 2014, 06:51 PM
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#9
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Custom Member Group: Members Posts: 24,624 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Stick your head in the engine bay, rev the motor quickly up and down to see what it does, how much torque makes it move, and what moves....
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914itis |
Jun 6 2014, 06:58 PM
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#10
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
It happened when going straight as well, not just comers . I will check the shift rod for spline jumping. .
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rgalla9146 |
Jun 7 2014, 06:55 PM
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#11
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Advanced Member Group: Members Posts: 4,624 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Paul
Have an assistant take the driving position. Chock the wheels or set the ebrake. Then have the driver select first and slowly tease the clutch while you watch the motion of the engine. Do the same in reverse. If the engine is lifting excessively you have an issue with the mounts causing the shift linkage issue. |
914itis |
Jun 7 2014, 07:22 PM
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#12
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Advanced Member Group: Members Posts: 2,892 Joined: 9-October 10 From: New York City Member No.: 12,256 Region Association: North East States |
Problem found ,
When I modified the shift linkage, I was a novice at welding, i still am. I inserted a smaller dimension metal pipe inside the factory linkage pipe (rod) first for better support then weld. The weld came loose and the only thing that was holding the shift bar was that extra pipe. If I didn't insert that pipe the linkage would be on the floor. I took it to a professional welder today and the problem is solved. |
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