New CJ7, 1982 with some questions??

[Navyflyer4]

Just purchased a CJ7 , 82'. Laredo , column auto, driven 1000miles in 15 years and it needs a few things! Just got brakes, hoses, and general tune-up done, but has severe valve cover leak and exhaust manifold leak. I am getting a finned "Jeep" metal cover and was going to buy a replacement exhaust manifold and new gasket sets. I was wondering if a carb rebuild, or weber change out is suggested? Also, I have read a few things about the nutter bypass, but as a 1982, It doesn't look like it needs it? Also, it is missing a ton of emission stuff and vacuum hook-ups, but runs and starts fine. Seems to be underpowered. Could it be the exhaust manifold leak, carb issues? Would a weber and a better air(new 3" exhaust) help? It has a single pcv, but the suggested pcv is a dual set-up, but different manuals say different things. Sorry, lots of questions, but trying to get my head wrapped around this AMC 258 i6 / 4.2l and it is unbelievable the amount of vacuum and emission stuff is on it.

Thanks for any help or links. My guess is it may need a few basics but looking for any tips!

 

[Torxhead]

Welcome to the forum, a good thing to do with a recent CJ purchase is to get it running right and fix what the previous owner screwed up. That's why they sold it right? A carb rebuild might be a good bet, that way you know just what is inside it and how it works. I also would suggest a "Team Rush Upgrade" for the distributor, which is a distributor cap from a Ford six, an adapter to make it fit and a rotor. The upgrade also requires a new set of ignition wires. This is a popular upgrade and fairly inexpensive:I-6 'TeamRush Upgrade' (definitive) - JeepForum.com.
There are quite a few things that can affect the performance of the CJ AMC 258 i6 / 4.2l engine. One of them is the combination of the differential gear ratio and the size of tire used. I mention that since I am not sure of what you have and it is a good place to start.

 

[shum8]

There are quite a few things that can affect the performance of the CJ AMC 258 i6 / 4.2l engine. One of them is the combination of the differential gear ratio and the size of tire used. I mention that since I am not sure of what you have and it is a good place to start.

^^^^ I had an '82 years ago with 2.73 gearing..... that thing wouldn't pull a greasy rag out of a cat's butt goin downhill with a tailwind.... just awful. You're '82 may be suffering from the same ailment.

 

[hole]

Shum, I think we need some elaboration on this greasy rag you speak of White grease or old fashioned drum brake grease?

 

[hole]

Side note: I have an 83 with 2:73's still, but it has fuel injection which helps some with the rag.

 

[shum8]

Back in the day that would be wheel bearing grease..... LOL

In this part of Va, we're not real flat - hills, valleys, and mountains. I couldn't climb grades on interstate without down shifting.... around town wasn't too bad. That's the main reason I regeared the one I'm building now to 3.73...... should be a good compromise between highway driving and playing in the dirt.


Sent from my iPad using Tapatalk

 

[tarry99]

driven 1000miles in 15 years and it needs a few things! Seems to be underpowered. Could it be the exhaust manifold leak, carb issues?
Thanks for any help or links. My guess is it may need a few basics but looking for any tips!

If you haven't already , pull the tank and flush out all the garbage that has grown and accumulated in there........do the same to all the fuel lines. Start with a fresh filter and fuel...

 

[mtnwhlr]

I had an '82 years ago with 2.73 gearing..... that thing wouldn't pull a greasy rag out of a cat's butt goin downhill with a tailwind.... just awful. You're '82 may be suffering from the same ailment.

that describes my 84 to a tee