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Tach Question
#2777775
05/24/20 07:06 PM
05/24/20 07:06 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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I just ditched my old mopar ignition and installed a Summit cdi box (msd 6a copy ) and msd dist. Tach is a Autometer 5" . Car runs nice but now my tach reads around 600 rpm too low . Tach is wired correctly to the gray tach wire from the box. Summit box is set to 8 cylinder Someone mentioned I need a MSD tach adapter.................so is every car equipped with a MSD 6a and a Autometer tach running an adapter ??? Doesnt sound right.... https://www.summitracing.com/parts/sum-850620
Last edited by 493_DART; 05/24/20 07:07 PM.
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Re: Tach Question
[Re: MR_P_BODY]
#2778476
05/26/20 07:10 PM
05/26/20 07:10 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
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For 600 rpm I think the tack needs a calibration.. I've owned a few and one 1 was off by about that much just a guess It worked perfect before i changed the box and dist. idle was around 1,100 before ....now its at 500 ish
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Re: Tach Question
[Re: 493_DART]
#2778528
05/26/20 09:38 PM
05/26/20 09:38 PM
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Joined: Aug 2003
Posts: 43,176 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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For 600 rpm I think the tack needs a calibration.. I've owned a few and one 1 was off by about that much just a guess It worked perfect before i changed the box and dist. idle was around 1,100 before ....now its at 500 ish Send that cockroach back to Autometer and have them fix it or replace it on their dime and time
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Tach Question
[Re: Cab_Burge]
#2779797
05/30/20 04:03 PM
05/30/20 04:03 PM
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Joined: Jul 2004
Posts: 4,384 Worst Weather USA
493_DART
OP
master
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OP
master
Joined: Jul 2004
Posts: 4,384
Worst Weather USA
|
For 600 rpm I think the tack needs a calibration.. I've owned a few and one 1 was off by about that much just a guess It worked perfect before i changed the box and dist. idle was around 1,100 before ....now its at 500 ish Send that cockroach back to Autometer and have them fix it or replace it on their dime and time i bought it used years ago......i wonder what they charge...i still havent been able to get Summit tech on the phone
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