Design life of a 100 series engine and drivetrain

[mobi-arc]

I was told that the 4.7 is a copy of a Mercedes design that Toyota refined. I don't know if that's true or not, but that would fall in line with the general concept that the Germans & Americans are usually the innovators and the Japanese tend to be skilled at copying, refining, and streamlining the manufacturing, assembly, and quality control process.

 

[tabraha]

The leaking boots definitely is going to be something that happens with every 100 owner at some point in time. I don't think it is a weakness, just a part with a lifespan like any other rubber part. My mechanic spotted leaking boots at 87k miles when I had my t-belt replaced and a 4wd service from Mr. T.

I'm at 101,000 now and the truck has been up to the bumpers in mud and slush numerous times, pretty much on a weekly basis or more often. I'm just now getting around to taking it in for the boot replacement next week. I'll let everyone know if I get to replace CV's too because of this neglect or any other interesting things they find. The front end is still whisper quiet or else I would have forced myself to take it in sooner.

Quote for replacement of CV Boots: $540 P&L. I can live with that every 80-100k miles.

Tad A.

 

[mustardfj40]

My bought-from-new '98 UZJ100 just passed the 100K miles, still no major problem, the problem I had was the front shock overheated and blew out at Death Valley (thanked to a loaded truck and the washboard dirt roads) I am looking forward for another uneventfull 100K miles....

/td

 

[cary]

I would expect the engine and drivetrain to outlast how long you want to own the truck. Up until last year the 100 used the same 4 speed tranny as the 94-97 80, which was known to be a very reliable unit. As others said, the V-8 has had no real known problems, and likely it will go 300k+ miles with regular oil changes and service.

Cary