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tach Drive Distributer Button question

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Old Sep 12, 2014 | 06:15 PM
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Default tach Drive Distributer Button question

1972 Corvette Tach Drive Delco distributer Has a nylon insert that stops the tach gear from gauling the housing, It pops in a little hole. Do I need to epoxy it in?

This is a new car to me and looking through the cars history there seems to ba a lot of tach drive gears eaten over the decades, but more lately. this is a new distributer with no issues installed in April, I picked it up last month & the tach quit. the cable is fine.
Is there a problem on the cable side contributing to this OR
Also I have uncovered some shoddy work from this shop and they could have forgotten the insert.
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Old Sep 12, 2014 | 07:32 PM
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Originally Posted by pdmracing
1972 Corvette Tach Drive Delco distributer Has a nylon insert that stops the tach gear from gauling the housing, It pops in a little hole. Do I need to epoxy it in?

This is a new car to me and looking through the cars history there seems to ba a lot of tach drive gears eaten over the decades, but more lately. this is a new distributer with no issues installed in April, I picked it up last month & the tach quit. the cable is fine.
Is there a problem on the cable side contributing to this OR
Also I have uncovered some shoddy work from this shop and they could have forgotten the insert.
The button shouldn't need to be epoxied unless the hole is distorted. Probably not good if it missing.
Internal gear stripping is not uncommon on gear drive tachs. My car was like this when I bought it. If you remove the cable from the distributor, you should be able to stick a tool/small screw driver into the housing and try to rotate it. There shouldn't be much play.
The problem could be either end, you just have to track it down.
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Old Sep 13, 2014 | 11:07 AM
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Originally Posted by pdmracing
1972 Corvette Tach Drive Delco distributer Has a nylon insert that stops the tach gear from gauling the housing, It pops in a little hole. Do I need to epoxy it in?
You just pop it in the hole - the crossgear holds it in. Don't run the distributor without it...

Lars
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