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Unread 10-23-2001, 10:50 AM   #1
powjunkie
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Join Date: Oct 2001
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Calibrating speedo???

Anyone know if there's a way to calibrate the speedo when running oversized tires?

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94 YJ 4", SYE, 33 mud t's on MT classics; 4.10's with Detroit Truetrac in rear
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Unread 10-23-2001, 02:24 PM   #2
JeepTodd
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I have not looked into this yet but I read in a magazine that this web site should help you out. www.speedometershop.com

According to the magazine article you should also be able to go to your local dealer and they might be able to help you out.
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1987 YJ, 4" lift, 33 x 12.5's, 4.2l
2001 TJ, 4" lift, 33 x 12.5's, 2.5l, air raid intake, air raid TBS
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Unread 10-23-2001, 03:20 PM   #3
powjunkie
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In their FAQ section, they answered my question. It looks like it's not a simple tweak of a screw like I had hoped. You have to change the drive gear in the transmission. It's something I've lived with for 6 years now anyway, so no biggie. I recently did a gear swap and it changed again, so that's why I asked.
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Unread 10-23-2001, 05:02 PM   #4
RodeoRob
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Quote:
Originally posted by powjunkie:
It looks like it's not a simple tweak of a screw like I had hoped.
It really isn't that hard. while you can't just 'turn a screw', all you have to do is purchase the new speedo gear, crawl under your Jeep, take the old one out and the new one in. The speedo gear is located on the output shaft of the transfer case, its pretty easy to get to.
-Rob
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Robert Gorrell
1995.5 Isuzu Rodeo - SAS'd and SOA'd, sitting on 36x12.50 TSLs, D44 front, 14bff rear, locked by OX and Detriot, suspensions by Jeep and Chevy, high steer conversion, 5.13 gearing and Teralow in the case.
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Unread 10-24-2001, 10:40 AM   #5
powjunkie
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Thanks for the info guys. I found this website that pretty much explains everything. http://www.gotjeep.net/speedo.html No more excuses when getting pulled over by the man....then again it's never worked anyway.
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