Originally Posted by vsanzbajo
Like the questions says I want to know your opinion about stock Jeep CJ's with the 4.2 L engine.
I know once you get into mods and all upgrades reliability might suffer, if not done properly.
My question is more about stock CJ's. Any years are more reliable than others?
I always thought my CJ's were extremely reliable , but many people think otherwise.
I think the main problem on CJs are the mods that people do that are not done properly, and that leads to unreliable Jeeps.
I use my 86 CJ as a daily driver and it is my only car.
People think that I am crazy to drive such and old car and specially a Jeep. I do not agree.
Let me know what you think and what are the weakest points on our CJ's.
Thanks in advance.
CSP is pretty much correct.
Reliable, YES, When maintained.
Lots of maintenance, and some of the upgrades make for a lot less maintenance, which increases reliability.
Quality replacement parts increase reliability.
Since the newest CJ was made in '86, you are looking at a LOT of replacements parts in the past 28 years.
The quality of 'Discount' replacement parts has steadily gone down in the past 28 years, and often times I see a 'Discount' part causing more problems than it's worth.
Another factor is finding a mechanic that has reasonable experience with these types of vehicles.
Bad or inexperienced mechanics make for poor repairs and decreased reliability.
It's getting harder and harder to find an 'Old School' mechanic that can work on breaker points ignitions. and now you can add the first generation electronic ignitions.
Things like carb rebuilds are becoming a thing of the past since fuel injection creeped into everything in the 80's...
Then you have parts issues.
Many parts for older vehicles simply aren't made anymore, you have to use 'Knock-Offs' or find the best 'Used' part for your rebuild.
Take drive chains for early Q-Track transfer cases for example,
Or the issues we have with ignition modules, they are all made 'Overseas' and the quality is lacking...
Your best bet is the aftermarket 'Upgrades' in these cases since there simply aren't any 'Factory' quality parts available.
Another instance is with U Joints, you have do dig around on the internet in most cases to find actual Spicer U Joints, and as many of us have found out the hard way, the 'Discount' store brands don't last long.
And that is just to bring your vehicle back to factory quality....
Your '86 probably doesn't suffer from it, since most had D-44 rear differentials,
But the two piece axles in CJs were a pain in the butt! Common failure points and the ONLY way to fix that issue is the aftermarket/upgrade parts.
Simple is usually reliable, provided you have the correct maintenance.
These vehicles are simple, they CAN BE reliable, and to increase the reliability using some 'Upgrades' or higher quality parts will help.