 Tach Bounce |
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| 914Bryan |
 Oct 14 2011, 05:54 PM
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Member  Group: Members Posts: 190 Joined: 6-June 11 From: Orange County Member No.: 13,162 Region Association: Southern California  |
What can I do about a bouncing tach? When I shift, the needle wildly bounces around until the rpm settles in a gear. Then it either climbs or drops depending on acceleration or decelaration. Any ideas? (IMG:style_emoticons/default/confused24.gif)
74 2.0, stock fi and dizzy/coil |
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| michael7810 |
Oct 15 2011, 08:09 PM
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Senior Member Group: Members Posts: 1,082 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region 
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My tach does the same thing. I have a new distributor with pertronix and MSD ignition. I took the tach to the local speedo/tach shop when I had my odometer fixed and the guy checked it out and said the bounce was normal. He said there is little to no damping to smooth out the bouncing and there was nothing he could do to fix it. Maybe I need to send it elsewhere if you guys are saying your tach does not bounce when shifting.
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| mgphoto |
Oct 17 2011, 10:59 AM
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#3
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"If there is a mistake it will find me" Group: Members Posts: 1,366 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
QUOTE(michael7810 @ Oct 15 2011, 07:09 PM)  My tach does the same thing. I have a new distributor with pertronix and MSD ignition. I took the tach to the local speedo/tach shop when I had my odometer fixed and the guy checked it out and said the bounce was normal. He said there is little to no damping to smooth out the bouncing and there was nothing he could do to fix it. Maybe I need to send it elsewhere if you guys are saying your tach does not bounce when shifting. North Hollywood Speedometer, they rebuilt my tach using newer technology parts! A Pertronix with the Bosch Blue coil, the best spark I've ever got! |
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Posts in this topic
914Bryan Tach Bounce Oct 14 2011, 05:54 PM
Dave_Darling If your car still has ignition points, check them ... Oct 14 2011, 06:22 PM Valy
What can I do about a bouncing tach? When I shift... Oct 14 2011, 06:23 PM 914Bryan I was thinking points too..Side note, I was thinki... Oct 14 2011, 07:08 PM Vacca Rabite If you are running Djet, you need to keep the stoc... Oct 14 2011, 07:50 PM avidfanjpl Get a pertronix for that car. I only keep points a... Oct 14 2011, 11:47 PM Valy Just for reference, this is what your bad points/c... Oct 15 2011, 02:07 AM 914Bryan Awesome info guys! Thanks! Oct 15 2011, 05:42 PM Tom Valy,
That is some bad switch bounce! The... Oct 15 2011, 07:40 PM 914Bryan Sooo maybe an Autometer monster tach instead of th... Oct 15 2011, 08:26 PM Spoke There's 2 basic reasons the tach bounces:
1) ... Oct 16 2011, 10:20 AM
Valy
My dear friend,
you solved a symptom, not the... Oct 16 2011, 10:34 PM Spoke
My dear friend,
you solved a symptom, not th... Oct 17 2011, 07:02 AM Valy
[quote name='Valy' post='1556077' date='Oct 17 20... Oct 18 2011, 07:26 PM Spoke
The problem is that the bouncing fools the tach t... Oct 19 2011, 04:40 AM Vacca Rabite I don't suppose you could point out the cap th... Oct 16 2011, 10:41 AM Bartlett 914
I don't suppose you could point out the cap t... Oct 16 2011, 02:38 PM Spoke
My Tach jumps also. I don't remember which c... Oct 16 2011, 07:05 PM Spoke
I don't suppose you could point out the cap t... Oct 16 2011, 07:01 PM 9146986 Sometimes just putting a clean piece of thin cardb... Oct 17 2011, 10:46 AM larss I had about the same symptoms on my tach, the need... Oct 17 2011, 11:23 AM |
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