Swapping ba10 to ax15. speedo gear? - Page 2 - JeepForum.com

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post #16 of 91 Old 01-02-2014, 09:46 PM
5-90
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One long, one short? I believe the long-shaft speedo gear was used with the later transfer cases (electronically-driven speedo. I am unsure of when this started.)

However, you can probably bring your old speedo gear and its housing over to your new transfer case without incident. I believe all of the NP/NVG transfer cases used for Jeeps have 8t drive gears in the transfer case, so that should not change.

But, compare the housing you remove to access the speedo gear. If they mount the same, just put the old housing on the new tcase and call it good.


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post #17 of 91 Old 01-03-2014, 04:09 AM Thread Starter
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That's one of the issues is the hole is larger. Thanks
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post #18 of 91 Old 01-03-2014, 06:31 PM Thread Starter
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Its hard to believe nobody has had this issue. It seems this is a common swap, I must just have some odd model of TC. lol I'll try and get some pictures. Thanks
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post #19 of 91 Old 01-03-2014, 06:37 PM
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I just snapped this pic of my np231 the other day. mine is a 91, it has the cable AND an electrical plug. the plug if I recall was on a fitting that stayed with the cable. this is what was left. the actual gear is on the shaft inside.
Sorry I cant be more help this is all I have to go on
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post #20 of 91 Old 01-03-2014, 07:08 PM Thread Starter
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So that looks like neither of mine, lol. I'm not even sure what I have for tranny and TC. No tag on the TC but they look alike just the tranny being a little heftier. I'll shoot some pictures. Thanks for the help
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post #21 of 91 Old 01-03-2014, 07:17 PM Thread Starter
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This is my attempt at some pictures
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post #22 of 91 Old 01-03-2014, 07:21 PM Thread Starter
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Sweet it worked, lol. The first pic is of the two together. the ba10 is closest, notice how big the hole is on the farther one( new np231?). The second pic is of the gears I pulled out of the new TC. I'll post some more side by sides of the two. I'm thinking I need to verify what this tranny and TC are really from. When I picked it up the guy had two yj's sitting in his back yard that he was parting out. The motor and tranny were laying in front of one of them like he had just pulled them out. Thanks
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post #23 of 91 Old 01-03-2014, 07:22 PM Thread Starter
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Here's some more
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post #24 of 91 Old 01-03-2014, 07:24 PM Thread Starter
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The ba10 is on the left, notice the tag missing from the new TC
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post #25 of 91 Old 01-03-2014, 07:31 PM
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Quote:
Originally Posted by huskerconan View Post
So that looks like neither of mine, lol. I'm not even sure what I have for tranny and TC. No tag on the TC but they look alike just the tranny being a little heftier. I'll shoot some pictures. Thanks for the help
If you have an NP231 TC, there should be ~13 ribs on the rear side of the TC. The NP207 has ~7 ribs. If you look on the rear axle side of the TC, the rib areas are on the left side of the TC, behind the drivers side drop for the front drive shaft. I just did this swap a couple of months ago, so it is fresh on my mind. With your Jeep being an 87, you have a mechanical speedo. The speedo gear housing WILL NOT transfer over from the 207 to the 231. You will need a new speedo gear housing cover if the housing cover is missing from the TC. Below is the link where I purchased my new speedo gear. It is a long shaft speedo gear. IIRC The short shaft speedo gear was used when the speedo went from mechanical to electrical. If your speedo cable is mechanical, you will need to buy the long shaft speedo gear. http://www.ebay.com/itm/150995815407...S:1123&vxp=mtr If the TC did not come with the cover for the hole, you will need to find one used. I lucked up and found one on ebay for $14.99. The pic below is the pic of what you need. It was listed as a Speedometer Pinion Gear Housing Holder Long Shaft. Good luck, because I thought I would never find one. All that being said, if the donor you are installing is electrical, you will need to look into adapting your existing mechanical speedo setup to an electrical setup or adapting the donor, if electrical, to a mechanical setup.

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"When Chuck Norris drives, Chuck Norris controls the radio..."
Quote:
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Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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post #26 of 91 Old 01-03-2014, 07:34 PM Thread Starter
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Transfer Case Identity

My transfer case is missing the red tag so Is there any other way to tell exactly what it is? I believe the tranny and TC came out of a 91yj, at least that is what I was told.

Thanks
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post #27 of 91 Old 01-03-2014, 07:35 PM Thread Starter
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Its the one on the right, next to my puked out ba10 I was hoping to trade it out with
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post #28 of 91 Old 01-03-2014, 07:39 PM
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Quote:
Originally Posted by huskerconan View Post
This is my attempt at some pictures
That is an electrical speedo setup. Your 87 requires a mechanical for the speedo. If you can find a speedo gear housing like the second photo, you can easily swap it in with your existing speedo cable setup. Will the connector on the top of the donor speedo gear housing come off? If it does and is threaded underneath, you may be able to remove the top electrical connection and use it as mechanical.




Quote:
Originally Posted by Exparrot View Post
"When Chuck Norris drives, Chuck Norris controls the radio..."
Quote:
Originally Posted by HurricaneRZA View Post
Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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post #29 of 91 Old 01-03-2014, 07:50 PM
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Looks like a 207 and a 231 but I'm on my phone and can't confirm. The years match

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post #30 of 91 Old 01-03-2014, 07:53 PM
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Quote:
Originally Posted by Anticanman
Looks like a 207 and a 231 but I'm on my phone and can't confirm. The years match
Anticanman is correct. OP I gave you all the info you need in your other thread. Why did you start a new thread?

Quote:
Originally Posted by Exparrot View Post
"When Chuck Norris drives, Chuck Norris controls the radio..."
Quote:
Originally Posted by HurricaneRZA View Post
Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.
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