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> Rattle in shifting mechanism
andreic
post Oct 9 2019, 08:12 AM
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Hello,

I have a 1972 with the early (tail) shifter mechanism. The transmission shifts very well after I replaced all the bushings and adjusted the shifter.

However, in second, third, fourth, and fifth gears, as I accelerate through 1400 rpm there is a loud rattle that seems to come through the firewall. I believe it must be coming from the connection between the front shifter bar (the one that goes through the firewall) and the rear one. Both plastic balls at that connection were recently replaced in the shifting mechanism, but that part of the shifter still does not feel tight. The balls used were the black plastic ones supplied by Pelican.

Does anyone have any experience with these? Is there any other supplier of the plastic balls? If not, is there anything else I can do to eliminate the rattle there?

Thanks,
Andrei.
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dr914@autoatlanta.com
post Oct 9 2019, 08:25 AM
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you will have to localize it. If in the tunnel, could be a broken clutch tube, or a loose connection where the tunnel rod attaches to the short link rod and maybe the clamp is rattling against the tunnel. On the other hand, could be the loose heater control valve rattling against the engine mounting bar. Also could be an air guide plate rattling against the rear shift bar


QUOTE(andreic @ Oct 9 2019, 07:12 AM) *

Hello,

I have a 1972 with the early (tail) shifter mechanism. The transmission shifts very well after I replaced all the bushings and adjusted the shifter.

However, in second, third, fourth, and fifth gears, as I accelerate through 1400 rpm there is a loud rattle that seems to come through the firewall. I believe it must be coming from the connection between the front shifter bar (the one that goes through the firewall) and the rear one. Both plastic balls at that connection were recently replaced in the shifting mechanism, but that part of the shifter still does not feel tight. The balls used were the black plastic ones supplied by Pelican.

Does anyone have any experience with these? Is there any other supplier of the plastic balls? If not, is there anything else I can do to eliminate the rattle there?

Thanks,
Andrei.

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Mikey914
post Oct 9 2019, 08:48 AM
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I have one, unfortunately / fortunately it works well. My suspicion is that it's actually something to do with the engine mounts. Probably on the bar. It's harmonics that cause the vibration and it's just not fastened down all the way.
My .02
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andreic
post Oct 9 2019, 12:16 PM
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I should say that I looked all the way under the car, and nothing touches the long shifter bar that is behind the firewall. When the car is in 1st or reverse, if I hit this bar with my hand, no rattle. When the car is in 2, 3, 4, or 5, banging on it with my fist creates rattling noise inside the linkage (where the two plastic balls are, inside the plastic housing).

A.
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Mikey914
post Oct 10 2019, 03:23 PM
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Got me on this one.
Interestef to soo what it looks like inside.
Shouldn't be anything loose inside. (IMG:style_emoticons/default/WTF.gif)
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rhodyguy
post Oct 10 2019, 09:16 PM
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Did you replace the bushing in the carrier behind the shifter? In 1&r the linkage is under a side load.
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