spastic tachometer....

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08-08-2018 | 12:41 PM

#11

payuppsucker

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Joined: Aug 2012

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From: Collierville, TN and Pickwick Lake

Quote:

Originally Posted by eichhoma

Does anyone think there is any good logic in the Blaster coil effecting the tach, or somehow causing some interference?

08-08-2018 | 12:45 PM

#12

eichhoma

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Joined: Jul 2007

Posts: 476

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From: St. Louis / LOTO

thanks for the additional info.... I appreciate the help, this might quickly get out of my comfort zone but we'll give it a shot

08-08-2018 | 01:08 PM

#13

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Joined: Nov 2004

Posts: 14,100

Likes: 3,687

From: On A Dirt Floor

Quote:

Originally Posted by payuppsucker

^^^^^^^^^^^what Steve (SB) said................and check the ground wire on the tach and make sure it's secure then trace it to it's grounding point and check that connection. Sounds like a ground issue since actuating any switch causes it to peg out.

What Paul (payuppsucker) said.

08-08-2018 | 01:13 PM

#14

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Joined: Nov 2004

Posts: 14,100

Likes: 3,687

From: On A Dirt Floor

Quote:

Originally Posted by F-2 Speedy

I tried running some new msd coils on stock Mercury ignitions, they started to over heat the timing modules to the point that the distributor was double firing the engine @ 10* and again @ 270*................ they are a POS....

That sucks. Don't quote me but i think the stock merc canister coil is .8 ohms and this must be matched when using a different coil ? That said, before I heard this, I had installed the HVC epoxy canister coils on several TBIV motors many years ago (10+) and still going strong.

But yeh,best bet is to stay away from MSD anything. ;(
Many Suck Donkeys ...lol