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Old 06-16-2011, 05:56 PM
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School me on the YJ

Hey YJ guru's. I'm from the TJ section but I've got a buddy who just got an 4.2L 89 YJ and we're gonna be doing some tearing into it this weekend. First thing we are going to do is replace the clutch which leads to my first question. I know on my RH32, I needed to do some drilling to move the vent higher up on the Jeep. He has a manual in his. Is there any type of write ups on what to do with the vent since we will have the trans out anyways? Anything else we should do on this jeep? Any parts that go bad regularly that we should go ahead and replace as a good measure? Anything else I should know? School me! I know a lot about the TJ, but dont know much about the YJ. Thanks Jeepers!

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Old 06-16-2011, 07:53 PM   #2
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Can't help you with the tranny question, but I can say that most YJers take the trac bars out. I took my sway bar out too and love the ride. There are also some carb mods you can do. Look up Nutter Bypass. I believe there are a few threads on it. The are also prone to have problems engaging the front axle to 4wd when the vacuum system gets old. There are some good writeups on here about that too.

Other than that, tell your buddy to enjoy it. They are great Jeeps and the square headlight crowd is alive and well.

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Old 06-16-2011, 10:39 PM   #3
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X2 on the on the carb. Upgrade!! Im saving up for a carb upgrade the stock is a POS!!!! The 4.2 is bullet proof! Let me know about the clutch when u get it done cause that's something im gonna have to do in the near future. Wish I could help more
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Old 06-17-2011, 12:04 AM   #4
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yes def trash the trac bars and swaybar. get a hei dizzy, a different carb, tj shafts and youll be good to go. the stock vacuum disconnect system sucks. square headlights rule.
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Old 06-17-2011, 08:35 AM
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Lol I like his jeep but I'm loving my TJ. i'm sure I would feel the same about a YJ if I had purchased one of those as a first Jeep. What are the benifits of removing the trac bars? Dont those help to locate the axle under the vehicle?? Also, could someone shoot me a link explaining the 'nutter bypass'? I just did the search fn on here and couldnt find any useful info telling me what exactly it is refering to.
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Old 06-17-2011, 11:56 AM   #6
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Here is a link to a How-To on the Nutter Bypass, How to - Nutter Bypass - JeepForum.com
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Old 06-17-2011, 12:34 PM   #7
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Quote:
Originally Posted by 99TJCrawler View Post
What are the benifits of removing the trac bars? Dont those help to locate the axle under the vehicle??
on a jeep with coil springs yes, but on the yj which have leaf springs, the springs themselves keep the axles under the vehicle, the track bars are useless.

isn't the rh32 a auto, i don't think manuals have the same problem with water getting in the vent holes as autos do, the problem with water in autos is that it makes the glue disintigrate.
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Old 06-18-2011, 08:05 AM   #8
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on a jeep with coil springs yes, but on the yj which have leaf springs, the springs themselves keep the axles under the vehicle, the track bars are useless.
Functionally yes I also think the track bars are useless, but to they were not useless back in the day. It helped Jeep get around the stigma created from a misleading (at best) report from 60 Minutes that presented Jeeps as more dangerous that other vehicles of the same time. Another TV show, Dateline, "showed" Chevy trucks blew up by putting model rocket engines in the gas tank, now that's news! Believe what you see on TV, shut up and buy.

I removed my track bars years ago. No difference to me. Disclaimer: you remove them at your own risk and my experience doesn't make me accountable for your actions or any outcomes from your actions.
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Old 06-18-2011, 08:31 AM
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Thanks for the responses everyone.

PaulRevere1991: yes the RH32 is an auto. For some reason when I was learning about how to move the vent, I thought I ran across an article about someone who modified the vent on a manual trans to move it up higher. Could be totally wrong tho. Just figured I'd ask since we're gonna have it out.

So...Why do a 'nutter bypass?'
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Old 06-18-2011, 09:11 AM
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Also want to mention, he has the BA10 trans, is it worth it to swap in an AX-15? What kind of wiring nightmare would we be looking at if that was the plan?
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Old 06-18-2011, 09:17 AM   #11
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So...Why do a 'nutter bypass?'[/QUOTE]

There are about 18 miles worth of vaccum lines connected to the carb. Emissions stuff mostly. It basically bypasses the computer. It will run much better and generally start easier, but will not be emissions compliant as far as I know.
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Old 06-19-2011, 02:13 PM
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Sweet info! Any info from anyone on a trans swap? Can someone post some info on the hp dana 30 vac system? It seems that his is not engaging.

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So...Why do a 'nutter bypass?'
There are about 18 miles worth of vaccum lines connected to the carb. Emissions stuff mostly. It basically bypasses the computer. It will run much better and generally start easier, but will not be emissions compliant as far as I know.[/QUOTE]

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