tach install? - Dodge Cummins Diesel Forum
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post #1 of 10 (permalink) Old 11-08-2009, 11:55 PM Thread Starter
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tach install?

how do you install a tach on a 91 cummins? i tried searching and couldn't find anything.
thanks


Brian- 03 6 speed
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post #2 of 10 (permalink) Old 11-09-2009, 09:58 AM
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IssPro make one for our trucks that runs off the alternator.
Most seem to like it.

2011 Long Bed Crew 3500 w/6 Alcoas set up towing a 40' 5th wheel RV. Custom front bumper/grille guard and rear fender protection
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post #3 of 10 (permalink) Old 11-09-2009, 11:44 AM
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auto meter make one that runs off the alternator

93 d350 5spd 4inch exhaust to a 6inch tip
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post #4 of 10 (permalink) Old 11-09-2009, 07:50 PM
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My isspro on the 89 runs off from a magnetic pic up that is run off the balencer. Basically 2 magnets get glued on the balencer 180 degrees apart and a sensor reads them as they pass by. The pic up is part number R 8912. Not to be confused with the wire kit # R 8912-92 for the later trucks.







.

89 dodge 3/4 4x4, A727 ,3.07 gears, factory L S , powerstroke intercooler, S300, stans exaust with stainless tailpipe, fuel power screw turned?, fuel pin turned to deepest, 3 turns smoke screw, 1/2 turn down on starwheel. 93 W250 ex cab, 6X16's, 60 GDS, rag
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post #5 of 10 (permalink) Old 11-10-2009, 12:07 AM Thread Starter
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thanks for all the info!

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post #6 of 10 (permalink) Old 11-14-2009, 03:04 AM
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Tiny Tach. Digital, and easy to install. Reads impulse in injector line. Google it.
Dan

1991 Dodge D250, std cab, 4x4, 3.07, auto, pyro, tiny tach,boost,oil pres,trany temp,water temp. pump tweeks,366 spring, 2nd gen wheels, 285/75/16.
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post #7 of 10 (permalink) Old 11-14-2009, 07:59 AM
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Quote:
Originally Posted by oil slick View Post
Tiny Tach. Digital, and easy to install. Reads impulse in injector line. Google it.
Dan
Another vote for the tiny tach. Easy install, and seems 100% accurate. Plus it has the service interval reminders you can setup. Alot of bang for $100. Plus the new lighted version is easy to see day or night.

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post #8 of 10 (permalink) Old 11-14-2009, 08:34 PM Thread Starter
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he got the isspro tach with magnetic pick up. haven't put it in yet but it seens really simple

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post #9 of 10 (permalink) Old 11-14-2009, 08:43 PM
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The fuel line impulse idea works, ... I have a fuel-line impulse rig from Snap-On that converts the impulse to a signal readable by my timing light so I can fine-tune diesel injector timing. Don't ask how much it cost, seven years ago!

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post #10 of 10 (permalink) Old 11-15-2009, 02:24 PM
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I got the same as Richie O. i still have to install it. I like isspro, very accurate, atleast my pryo is lol my 0-60 boost is Sunpro. but anyways im debating on either putting the tach in the same spot as the factory option tachs were OR get another pillar pod, only a single one and put it under my pryo and boost gauges. I never heard of the injector pulse tachs. sounds interesting

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01 QCSB, 79k miles, AFE intake, 4" MBRP, auto,Fass 150, Smarty
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