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tach question ?

Does it have spark? And other questions...

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tach question ?

Postby watson0720 » Thu Feb 18, 2010 6:45 pm

ok i wanna put in a tach, i'm looking at the autometer 3788, that hooks up around the alternator, but it says to adjust at highway rpm, what does that mean, how do you know your highway rpm? Next question, what tach does everyone else use? and where did you install it? where did you order or get it at? ok that was more than two questions but i need to know before i go crazy.....
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Re: tach question ?

Postby Richie O » Thu Feb 18, 2010 7:36 pm

What year truck is it? That will help us answer.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: tach question ?

Postby watson0720 » Thu Feb 18, 2010 10:07 pm

93 d350 drw
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Re: tach question ?

Postby Richie O » Thu Feb 18, 2010 10:11 pm

Well, I will say the same thing Peobryant said on Cummins Forum. I have isspro tachs and they are the only one besides a dealer installed factory option tach that will read the trucks signal. There is no calibration needed for those.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: tach question ?

Postby 1STGENFARMBOY » Fri Feb 19, 2010 8:40 am

My wife got me a isspro tach for christmas and i love it, supper easy install. aint she great. 8)
93 W250 STD CAB, AUTO 3.55, GAUGES, 80HP DDP STICKS, DENNY T ,16CM HOUSING, 60MM GILLETT, VE MAXED,BHAF, BHFF, 366 SPRING,P/S INTERCOOLER, TIMS COOLER TUBS, TIMMING 1/8 BUMP,4in TURBO BACK TO DUEL 5IN STACKS,33 12.50 BFG, HOLLEY BLACK, CONVERTER COOMING.
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Re: tach question ?

Postby 1STGENFARMBOY » Fri Feb 19, 2010 8:43 am

now if i could get her to spring for a set of twins we would be set. :jumpsmile:
93 W250 STD CAB, AUTO 3.55, GAUGES, 80HP DDP STICKS, DENNY T ,16CM HOUSING, 60MM GILLETT, VE MAXED,BHAF, BHFF, 366 SPRING,P/S INTERCOOLER, TIMS COOLER TUBS, TIMMING 1/8 BUMP,4in TURBO BACK TO DUEL 5IN STACKS,33 12.50 BFG, HOLLEY BLACK, CONVERTER COOMING.
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Re: tach question ?

Postby Richie O » Fri Feb 19, 2010 8:47 am

My wife lets me buy what I want for x mas. :D I came home with a Farmall 300 on day and said " Look at your new tractor " ;)

If you do buy an autometer you just need someone with an optical tach to set it for you. Its only a 1 time thing.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: tach question ?

Postby Jim Leap » Fri Feb 19, 2010 4:53 pm

I just installed an Autometer 2888 diesel tach. I purchased it from Summit Racing. $120 not including shipping. It was a pretty easy install. I calibrated it using one of those internet RPM calculators. The data I input was the following: gear ratio (3.54:1) running 31 inch tall tires. The info I got back informed me that at 55 MPH with the transmission @ 1:1 (4th gear) I would be turning 2110 RPM. I installed the tach and adjusted it till I got it to read 2110 RPM at 55 while in 4th gear on the getrag. I mounted it right near the cargo light switch. It can easily be seen while driving. I had to make a special little bracket to bring it up in such a way that the steering wheel cross piece wouldn't block it from view. So far so good. I tried to attach photos but apparently they are too big. Will try again.

Jim
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1991 Ram 250, 4X4, regular cab, 5 speed
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Re: tach question ?

Postby Jim Leap » Fri Feb 19, 2010 5:16 pm

O.K. let's see if the pictures load this time.
You do not have the required permissions to view the files attached to this post.
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1991 Ram 250, 4X4, regular cab, 5 speed
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Re: tach question ?

Postby PToombs » Fri Feb 19, 2010 6:31 pm

1STGENFARMBOY wrote:now if i could get her to spring for a set of twins we would be set. :jumpsmile:

I don't think you guys want a pair of twins running around at your age. ;)
pete

Just enough power to break everything behind the crankshaft.
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Re: tach question ?

Postby 1STGENFARMBOY » Sun Feb 21, 2010 4:52 pm

As loong as they stay under the hood i'm good.
93 W250 STD CAB, AUTO 3.55, GAUGES, 80HP DDP STICKS, DENNY T ,16CM HOUSING, 60MM GILLETT, VE MAXED,BHAF, BHFF, 366 SPRING,P/S INTERCOOLER, TIMS COOLER TUBS, TIMMING 1/8 BUMP,4in TURBO BACK TO DUEL 5IN STACKS,33 12.50 BFG, HOLLEY BLACK, CONVERTER COOMING.
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Re: tach question ?

Postby PToombs » Mon Feb 22, 2010 7:31 pm

:lol: :lol: :lol:
pete

Just enough power to break everything behind the crankshaft.
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