 Tach-y Question |
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| markb |
 Feb 13 2004, 01:31 AM
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#1
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914less :(  Group: Members Posts: 5,449 Joined: 22-January 03 From: Nipomo, CA Member No.: 180 Region Association: Central California 
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Hi All! I changed out the tach in the Blue Car due to it bouncing. The spare I have doesn't bounce but it reads lower than the one originally in the car. The first one read 4k @ 80mph. The new one reads 3300 @ 80mph.
In your experiences, which is right? It's a stock 72 1.7 with 205/60x15s. Dunlop A2's, if that matters. |
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| SirAndy |
Feb 13 2004, 01:33 AM
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Resident German Group: Admin Posts: 41,675 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
about 3800 @ 80 mph ...
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| ArtechnikA |
Feb 13 2004, 02:11 AM
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#3
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(markb @ Feb 12 2004, 11:31 PM) In your experiences, which is right? in my experience, experience is useless in the presence of instrumentation. find yourself a calibrated tach and see how far off the stable one is. |
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| TheCabinetmaker |
Feb 13 2004, 07:37 AM
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#4
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Use the rpm setting on your dwell meter to check it. Remember that your speedo will be slightly off due to the tire size too.
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