Search Results for ‘4.2’

My 83 CJ7 with a 4.2 needs some exhaust work done, the cat is rattling itself apart and there is some rust hole around the cat/muffler. I'd like to make the exhaust more free flowing, and am in debate on whether to just do it from the cat back, so new cat, muffler, and piping. Or to take this...

Hi All, Looking for a little advice here. I'm in the market for a straight 6 TJ or YJ as a weekend ride (had a TJ before). I found a very clean 1990 YJ with under 60K original miles (seller looking for about 6K). I'm a little worried about the 4.2 engine vs the more modern 4.0. I live in NYC...

I bought a MC2100 last year, and finally got around to installing it in my 85 CJ7 Laredo, which had a weber 32/36, and have a few questions. I thought I had purchased one with an electric choke, but i do not see where i'd hook up the choke wire- is this a manual choke (first 2 pics)? There are...

I have an 87 with the 4.2 and think i want to replace it with a 4.0 or maybe a 4.6/7 stroker. the 4.2 has had rough life, it was very mistreated by the PO, they drove it for a very long time with a blown head gasket and turned all the oil into black frosted flakes. also don't think they ever...

I have a 1988 YJ with the 4.2l, 3 spd auto trans and 2.5" Suspension lift, and Howell EFI conversion. Need a new rear end (drums are rotted), transmission is on its way out, and engine is tired and out of spec. There is a guy near me selling a 95 XJ Cherokee that runs and drives but has rotted...

Here's the deal....I've got an 87 YJ with some motor problems. While trying to troubleshoot and get it fixed, I stumbled upon a 94 XJ that I can pick up for $900. I need to know if this will be compatible with my YJ. Here's the vehicle specs 1987 Jeep Wrangler 4X4: 4.2L I6 T999 Automatic...

I currently have a 4.2L I6 in my wrangler that I may need to rebuild soon. My wrangler is completely decomputerized (nutter bypass, ECU removal, weber carb, etc...). I know the advantages of fuel injection, I just do not want to do that on this particular project. If i bought a used 4.0...

Been working on a bunch of little things over the winter, and this past week, I finally took her out to road test her. Drove her a couple miles, and when I got back, bam... leaking coolant. Was hoping for a head gasket. Nope... crack in the block. Any way to fix her? (JB Weld? Hubba Bubba bubble...

I am hoping someone can help. First off, I am new to site so hopefully I am in the right spot.Bought an engine that sat for 5 months. Its a 258 4.2 6 cyl. It runs great,but leaks oil from dipstick and oil filler(little). Pcv valve changed,oil amount correct,compression 120-130 across, but leak...

First off thank you everyone your help. I've only owned my jeep for a couple weeks and already I've used this forum many times. Thank you to all. So I purchased my 89 Wrangler 4.2 a couple of weeks ago. I test drove it for about 15 minutes and it had no abnormal noises, good oil pressure...

Hey all, I have an 88 YJ 4.2 and want to remove all A/C components. Before it's thrown at me: no, I do not want on board air and no, I do not want to replace it. I live in Orange County and have next to zero need for an A/C. The compressor seized up on me a few months ago in the middle of the...

Hello all, I'm rebuilding the t176 and also replacing the clutch and flywheel. I'm stuck and have a quick question. I've dropped the cross member and removed the bolts that attached to the transmission to the adapter that is connected to the transfer case but it's not budging. Should I have...

I was reading several threads about installing an a/c in a 4.2 cj7. But, I couldn't find any with a serpentine belt. What I have is 1981 4.2 with a serpentine belt, I'm looking for a complete unit to install into the old cj. I've looked at Collins Bros and JeepAir, but theirs is just for...

Just bought me my first jeep a couple weeks ago with the 4.2 5spd. The guy said he "ripped all that emissions crap out". The guy seemed like he was mechanically inclined. I just want to go over it and check he did everything right. So what would be some main things to check out. Need something...

I'm at a point in my JF membership where I hate posting new threads, but I can't find the information I need in my various talks with Professor Google and the rest of the interworld. What I'm trying to find out is if my 4.2 with A/C and serp belt is supposed to have idler pulleys. One to...

Guys, my CJ is running rough. I am looking for some help with how far I should be BTDC (before top dead center) when using the timing light. Here is what I have: 83 CJ7, auto with a fresh 4.2, mild cam, 4.0 HO head conversion, 390 cfm Holley Carb (out of the box settings I have never touched...

1989 carter carbed 4.2. I searched around a bit before posting but these symptoms seem to match various things (carb, timing, tps, clogged cat) and I don't know where to start first. The Jeep runs normal below 2000rpm / ~45 mph but loses power at speeds above that and the RPMs drop down to...

Hey everyone- so my uncle has a bone stock 1981 CJ-7 Laredo w/ the original GM Iron Duke 4 banger. He has had this jeep for about 20 years now- and it's spent the last 6 years or so sitting. Now that he's getting older, he wants to get it back on the road and enjoy the Jeep while he can- (he has...