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  • April 22, 2019, 01:01:07 AM

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Author Topic: Electronic speedometer conversion  (Read 814 times)

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Offline The Dark Side of Will

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  • Too much effort into cars that are too cheap
Electronic speedometer conversion
« on: December 12, 2017, 08:03:04 PM »
Has anyone swapped to an electronic speedometer?
What gauge did you use? What speedo cable sleeve or VSS?

I am doing a 4.0 HO swap with built driveline, including NV3550 trans, NP229 T-case, 3.54 front from a 4 cyl Eagle and 3.54 NON-C-clip Dana 44 rear from an '87 Wagoneer.

I'm about to button up the NP229 converted for Eagle use. I'll have a 36 tooth speedo gear to match the 3.54 axles and a Jeep aluminum speedometer gear drive sleeve instead of the Eagle plastic sleeve. At first I'll use a DRAC or JagsThatRun adapter to provide the VSS signal to the 4.0 ECU. I'd like eventually to convert entirely to electronic speed sensing, both for the ECU and the Speedometer.

Who has done that and what parts did you use?

Offline Nightpath

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Re: Electronic speedometer conversion
« Reply #1 on: April 06, 2018, 06:52:10 PM »
There aren't too many electronic speedos out there that are cheap to swap over to. Most come in a complete package for all the gauges which might be your better bet to upgrade to. Intellitronix makes one I do believe, 4 or 5 different colors and is easily adapted to the Eagle.

Offline atmafox

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Re: Electronic speedometer conversion
« Reply #2 on: April 13, 2019, 10:30:34 PM »
This is a bit necro but it's only about the fourth topic down so I'm not sure if that's a problem -- apologies if so.

In any case, I'm in the process of planning my own electronic speedo conversion but I don't (necessarily) intend to go with a kit.  I have, however, completed similar on an '86 Toyota Pickup with W56 transmission.  What I ended up doing was getting the speed sender from a later model version of the vehicle ('93, specifically) and fit it into the gearbox.  Also looted the dash and used the speedometer from it; works like a charm.

Which is somewhat the blueprint for this work on my Eagle.  Find an electronic speed sender (8 pulse per rotation square wavetrain per elsewhere in Jeeper communities -- the Toyota I worked on was a 4 pulse per rotation square wavetrain so not too odd) and matching speedometer and adapt it to my Eagle.  As my Eagle has a worn out either speedometer cable or speedometer and from experience after one goes the other will eat anything new put on it.

Per that resource (and unfortunately I didn't save the link, but some googling helped); basically all electronic speedo models Chrysler built use the same square wavetrain as well, so hopefully it shouldn't be too difficult to source parts from a yard.
Mine:
- 1980 AMC Eagle 2dr Sedan
- 2009 BMW 335i xDrive Coupe

Ours:
- 1986 Toyota Pickup

Hers:
- 1988 Toyota Supra Turbo
- 1988 Toyota Celica All-Trac
- 1997 Toyota RAV4 2dr 4x4

His:
- 1984 Toyota Tercel SR5 4WD

Offline TheBirdman

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Re: Electronic speedometer conversion
« Reply #3 on: April 15, 2019, 11:03:37 AM »
Well thats a neat idea. Let us know how it works. This spring Ive got a NP242 swap planned, and I was thinking id see if I could stick the cable drive from the 129 on it, but if the conversion works out well for you I may be interested in trying that.
83 eagle wagon 4.0

Offline amarshall

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Re: Electronic speedometer conversion
« Reply #4 on: April 15, 2019, 11:48:39 PM »
Just FYI, I swapped a NP242 last year - I got it from a 1998 Jeep Cherokee.  It came with an electronic speedo sensor, but I took it out and replace with the cable drive unit from my NP129.  Worked just fine to drive the Eagle speedo.  I was even able to find a new gear on fleabay, with the right number of teeth to match my big mud tires and swapped 3.07 axles.  I think the listing was for dodge truck speedos, but they are the same also.

For those looking for an electronic sensor, I'd start with the Jeep Cherokee units.  That would be the most likely direct fit.
Wanted:  More time to work on my Eagle!

1988 Eagle Wagon - Overlander Build
http://forums.amceaglesden.com/index.php?topic=45852.0

Offline atmafox

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Re: Electronic speedometer conversion
« Reply #5 on: April 16, 2019, 11:19:51 PM »
A-yupyup, that was my thought as well -- XJ units, yeah. (=
Mine:
- 1980 AMC Eagle 2dr Sedan
- 2009 BMW 335i xDrive Coupe

Ours:
- 1986 Toyota Pickup

Hers:
- 1988 Toyota Supra Turbo
- 1988 Toyota Celica All-Trac
- 1997 Toyota RAV4 2dr 4x4

His:
- 1984 Toyota Tercel SR5 4WD

Offline TheBirdman

  • huffs gear oil
  • Eagle
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  • Posts: 29
  • Thumbs Up 1
  • that noise? that ll go away.
Re: Electronic speedometer conversion
« Reply #6 on: April 17, 2019, 11:40:33 AM »
Just FYI, I swapped a NP242 last year - I got it from a 1998 Jeep Cherokee.  It came with an electronic speedo sensor, but I took it out and replace with the cable drive unit from my NP129.  Worked just fine to drive the Eagle speedo.  I was even able to find a new gear on fleabay, with the right number of teeth to match my big mud tires and swapped 3.07 axles.  I think the listing was for dodge truck speedos, but they are the same also.

For those looking for an electronic sensor, I'd start with the Jeep Cherokee units.  That would be the most likely direct fit.

Oh cool, good to hear. Did you manage to transplant the stock shift linkage for the np242, or did you use an aftermarket one?
83 eagle wagon 4.0

Offline amarshall

  • Eagle Sport
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Re: Electronic speedometer conversion
« Reply #7 on: April 17, 2019, 09:53:15 PM »
I briefly toyed around with a shifter handle from the same XJ, then realized it would take some major tinkering.  In the end I went with one from Novak - but not the cable version.  Those require mounting points on the body, and are made specific to Cherokees or Wranglers or whatever.

The one I got is a hard lever that connects right to the transfer case via a bracket so it doesn't need any connection to the body.  I think it's called the SK2X.  Still needed some tweaking, it's pretty tight under there with the trans shifter linkage nearby.

Bird an, I see you have another thread about NP242 swaps.  I'll post more info over there, I should have some pictures.
Wanted:  More time to work on my Eagle!

1988 Eagle Wagon - Overlander Build
http://forums.amceaglesden.com/index.php?topic=45852.0

 

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