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Unread 08-07-2011, 06:30 PM   #1
Lre78hd
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1988 YJ Wrangler 
 
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What are my options?

I have 88 yj with 307 gears and 33/12.50s. I am looking to correct my speedo but from the sites I have found from my search don't show a gear for what I have.

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Unread 08-07-2011, 07:31 PM   #2
Nickabis
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I used a gps and got an e exact speed and looked at my speedo and and now I know I'm a of by 5mph or so, so I judge my speed that way.

Here is a chart for an xj I found searching google. May give you an idea.

http://jeep-xj.info/HowtoSpeedoGears.htm

How this helps
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Unread 08-07-2011, 07:35 PM   #3
Louie4
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I use a speedometer on my iphone and I tested it with my '09 Civic and it's accurate. To change your speedometer it looks like you'll need a 25 or 26 tooth speedo gear based on the above link. I know Quadratec sells them but they are pricey IMO.
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Unread 08-07-2011, 08:42 PM   #4
clarkjdg
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You need a (26 tooth long), I had to go 34 when I put mine on because I went 4.10 gears and a 8.8 rear axle, I just went to Ebay there is a "new" one on there for $39. all the other places like 4WD, or Quadratec they are around $75. to see the one on Ebay just type in Jeep 26 tooth speedometer gear. It is the one you need its a "long shaft" that fits 1966 up on all cable driven. Its just like mine but different tooth count and Ebay is where I got mine.
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Unread 08-07-2011, 09:03 PM   #5
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If you regear to 3.73 it will get you close enough and you will regain some of that long lost pep.

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Unread 08-07-2011, 11:05 PM   #6
Lre78hd
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Thanks for the info. That would be my next question. Would regearing to 373 ( finding another jeep with the needed gears) be a wise move with the size tires I'm using. I'm not wanting to do alot of axle swapping and modifications.
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Unread 08-07-2011, 11:08 PM   #7
Tom95YJ
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I'd find a 4cyl. wrangler with a manual in a salvage yard and buy the axles. that way you would be able to swap in 4:10's on the cheap
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Unread 08-08-2011, 04:51 AM   #8
Louie4
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I agree with above. Find a donor YJ with an automatic and/or a 4 cylinder. They will have 3.73 or 4.10's. Unfortunately you'll have to swap axles but it's not that bad.
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Unread 08-08-2011, 05:41 AM   #9
Lre78hd
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For someone who rarely 4 wheels ( I like the open ride feel) would this be less of a headache than this 8.8 I see talk of? If so I would need to find a 4 cyl. Yj with which gears? Which would be more suitable 373/410? Would I need to just swap axles? When yall say axles Yall mean what mounts to the springs not the innerards right? Im Just wanting to be in the same dictionary.
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Unread 08-08-2011, 07:01 AM   #10
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Quote:
Originally Posted by Tom95YJ View Post
I'd find a 4cyl. wrangler with a manual in a salvage yard and buy the axles. that way you would be able to swap in 4:10's on the cheap
This is precisely what I plan to do. I've got a 95 on 33's with the stock 3.07 gears. My dad has a YJ that's a 4cyl 5spd he only wants $800 for it. The frame is junk but I could use the axles, the soft top, the half doors, the driver's fender, and a few other parts. Then sell the rest!
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Unread 08-08-2011, 07:12 AM   #11
Louie4
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Quote:
Originally Posted by Lre78hd View Post
For someone who rarely 4 wheels ( I like the open ride feel) would this be less of a headache than this 8.8 I see talk of? If so I would need to find a 4 cyl. Yj with which gears? Which would be more suitable 373/410? Would I need to just swap axles? When yall say axles Yall mean what mounts to the springs not the innerards right? Im Just wanting to be in the same dictionary.
An 8.8 is an ideal swap for folks with larger tires, lockers and ones who hit the trails a good bit. The lug pattern is the same and the width is close enough. However it would require some cutting and welding. I would just focus on finding a 4 cylinder YJ, it will most likely have the 4.10's which will give you a good bit of pep back. You'll still have the D35 but it doesn't sound like you're going to beat on it and you don't have a locker.

When we say swap axles we mean just unbolting and bolting back up to the leaf springs (in this scenario). However if you swap an axle from a different model/make then it will require some fab work. If you start taking gears out then it's a gear swap.
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Unread 08-08-2011, 07:24 AM   #12
Lre78hd
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Okay that's probably what I will do is find a 4 cyl. Would it be a unbolt/ rebolt scenario if I stayed in the 88 to 93 year range? No fabbing? I'm just looking for the easiest and most cost effective route.
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