MSD Ignition Box, Tach wiring? |
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MSD Ignition Box, Tach wiring? |
dbledsoe |
Sep 26 2005, 01:58 PM
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#1
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Mutineer Group: Members Posts: 300 Joined: 13-May 03 From: Boise, ID. Member No.: 687 |
I'm nearing the final stages of a Buick V6 swap into my 914. I am using an MSD billet distributor and MSD 6200A ignition box. As best I can tell from the Haines wiring diagram, the 914 12 pin harness wire, black wire with purple stripe that normally connects to the negative side of the coil, is the tach signal wire. I am guessing (IMG:http://www.914world.com/bbs2/html/emoticons/huh.gif) that the black/purple wire would be the one to connect to the MSD box tach output signal connection. Can anyone correct me on this if I am wrong in my guess? (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif)
Thanks, Don |
dbledsoe |
Oct 3 2005, 08:27 PM
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#2
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Mutineer Group: Members Posts: 300 Joined: 13-May 03 From: Boise, ID. Member No.: 687 |
Andy,
An update: The tach works fine but I think it is not accurate. With the original carb'd 98mm bore type IV engine I ran just below 3k rpm at 60mph. I took the Buick V6 conversion out for its first run on the road and found, according to the tach/speedo, I was running 3.5k at 60mph, which I don't believe is correct. Idle was at 1k rpm after warming the engine, which is high for a basically stock Buick V6, and it was barely idling (closer to wanting to die). That tells me the signal isn't what it should be. A Buick V6 should idle easily at 7 to 8 hundred rpm (someone feel free to correct me if I'm wrong on that). Cool! I'll get to order that nice looking Auto Meter tach I have been coveting. (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif) |
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