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  #21  
Old 05-29-2020, 12:13 PM
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charlie66 charlie66 is offline
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Originally Posted by shaker455 View Post
Charlie,
Your tach wire brown? does it have any resistor built into the wire?
If I remember correctly that 4-cyl is what that car came with so why can you not simply take the wire directly to the coil?
No . I have my own wire ran directly from the MSD box to the tach.

My car is a 1964 lemans it never came with a 4 cyl as far as i know, so it wouldnt have that resistor. But maybe i can get one of those babys to fix my problem?

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  #22  
Old 05-29-2020, 12:17 PM
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Originally Posted by Tom Vaught View Post
Charlie, you are not giving 64 speed the whole story.

Charlie's 4 cylinder turbocharged engine make about 800 hp at 30+ pounds of boost pressure. So the "why" is, his 4 cylinder engine and the mods he made would destroy your V8 64 tempest on the street if the two of you had a street race. We are not talking a couple of cars we are talking bus lengths difference in "The Gap".

Plus Charlie like to be different. His engine has a race turbo and fuel injection on it.
The picture he posted is a carbed 4 cylinder Pontiac engine.
Tom V.
Yeah you're right . I just figured id show the engine ..

I have to say though Tom, you are right on the money with what you discribed on my engine..

Thanks...

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  #23  
Old 05-29-2020, 12:18 PM
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I don't think so. Sorry. I think your car is great. Billk
No problem.

Thank you..

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  #24  
Old 05-29-2020, 12:20 PM
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Do you understand how this device works? Are there different switches that i operates from?

Thank you for the link..

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  #25  
Old 05-29-2020, 12:29 PM
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Originally Posted by charlie66 View Post
Do you understand how this device works? Are there different switches that i operates from?

Thank you for the link..
I've never had occasion to use one, so I have no actual knowledge. I just did a search to see if there was such a device, and came up with that. The seller says he will E mail you help if you have any problems during install. That's abut all I can offer.

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  #26  
Old 05-29-2020, 12:30 PM
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Originally Posted by charlie66 View Post
No . I have my own wire ran directly from the MSD box to the tach.

My car is a 1964 lemans it never came with a 4 cyl as far as i know, so it wouldnt have that resistor. But maybe i can get one of those babys to fix my problem?
I would try that and direct to coil

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  #27  
Old 05-29-2020, 12:57 PM
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Originally Posted by Sirrotica View Post
I've never had occasion to use one, so I have no actual knowledge. I just did a search to see if there was such a device, and came up with that. The seller says he will E mail you help if you have any problems during install. That's abut all I can offer.
Ok thanks

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  #28  
Old 05-29-2020, 12:58 PM
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I would try that and direct to coil
Do you know where to get one of these resisters?

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  #29  
Old 05-29-2020, 01:18 PM
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Been a long time but I think I used to get them with an MSD HEI kit?
I can look and see if I have one.

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  #30  
Old 05-29-2020, 01:37 PM
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Jeff, are you talking about a diode?

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  #31  
Old 05-29-2020, 02:45 PM
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I'm not an expert but it a type of resistance wire that was included to correct tachs

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  #32  
Old 05-29-2020, 03:31 PM
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Originally Posted by shaker455 View Post
I'm not an expert but it a type of resistance wire that was included to correct tachs
Oh ok. Maybe you could snap a pic of it if you find it.

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  #33  
Old 05-29-2020, 03:42 PM
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I've never seen one of these. It looks like just what you need. Good Luck. Billk

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  #34  
Old 05-29-2020, 07:53 PM
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Originally Posted by Sirrotica View Post
I've never had occasion to use one, so I have no actual knowledge. I just did a search to see if there was such a device, and came up with that. The seller says he will E mail you help if you have any problems during install. That's abut all I can offer.
I ordered one . So we'll see how it goes.

Thanks

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  #35  
Old 05-29-2020, 07:54 PM
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  #36  
Old 06-01-2020, 03:08 PM
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Easy fix, will need to be recalibrated. Anyone with a square wave generator with the proper dwell and an accurate frequency counter can do this

Sent from my SM-T817V using Tapatalk

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  #37  
Old 06-01-2020, 04:05 PM
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Don't hook it up "direct to coil". The MSD kicks out 480V to the coil.

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  #38  
Old 06-01-2020, 05:11 PM
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Easy fix, will need to be recalibrated. Anyone with a square wave generator with the proper dwell and an accurate frequency counter can do this

Sent from my SM-T817V using Tapatalk
How do you calibrate it ?

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  #39  
Old 06-01-2020, 05:12 PM
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Originally Posted by KEN CROCIE View Post
Don't hook it up "direct to coil". The MSD kicks out 480V to the coil.
I have it pluged into the msd ...

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  #40  
Old 06-01-2020, 06:11 PM
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Charles what ucu are you using? Will it send a tach out signal? If so there should be settings that tell the tach out your firing four cylinders.

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