Need the V8 tach modification "How to", Searched and came up with no details.. |
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Need the V8 tach modification "How to", Searched and came up with no details.. |
Dr. Roger |
Feb 6 2008, 11:08 PM
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#1
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A bat out of hell. Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California |
Looking for details on the V8 tach modification.
A "how to" and a pic would be awesome. Maybe even borderline stupendous. =) On a side note: I hooked up my ancient speedo tonight and an interesting thing happened. At 15 MPH it read 30. At 60 it went to 100. Then got stuck at 30 and never moved from there. I guess it's due for a tune-up/cleaning. So in the mean time I have a 911 gauge I'll install tomorrow morning and try it out. Hookup looks exactly the same. Still need that tach mod though. (IMG:style_emoticons/default/driving.gif) (IMG:style_emoticons/default/happy11.gif) Peace, Roger |
roadster fan |
Jul 17 2010, 01:39 AM
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#2
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Project Frankenstein !!!!!!!! Group: Members Posts: 1,009 Joined: 24-November 05 From: Aptos, CA Member No.: 5,184 Region Association: Northern California |
the gauge you have pictured is not the later style that Dr. Roger refers to. The 1975 and 1976 tach has one indicator light for the turn signal and the needle is different. The pic below is the gauge he is using i believe. Your tach may be a transition year old style with adj. pot, but no really sure.
If you look closely the layout of the two circuit boards is different with different components. |
BRAVE_HELIOS |
Jul 17 2010, 08:32 AM
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#3
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"Knowledge speaks, wisdom listens" Group: Members Posts: 295 Joined: 25-September 06 From: The Land Of ID! Member No.: 6,920 Region Association: Pacific Northwest |
the gauge you have pictured is not the later style that Dr. Roger refers to. The 1975 and 1976 tach has one indicator light for the turn signal and the needle is different. The pic below is the gauge he is using i believe. Your tach may be a transition year old style with adj. pot, but no really sure. If you look closely the layout of the two circuit boards is different with different components. Good catch! I should have explained further. My car is a '71, and has white faced gauges (which I like). I had a '74 tach laying around, so I decided to swap. What you see is the '74 innards mounted to the '71 face. There may have been transition models; but I am unsure. What I know is that the '71 mechanism has no calibration pot, while the '74 does. I've been trying to fine out why the tach I have looks slighty different than the other late style innards. As always, more information is needed! |
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