When I got home last night,Jon had that Ford 4.0 all apart. The bolt was broke in the back end of that jackshaft. The timing chain guide in back was broke,the ones in front were getting bad. They have automatic tensioners to keep them tight and were working,but either that bolt broke or the guide broke,just don't know which one happened first.
The valves are recessed a good half inch,so none of those were damaged. The bearings all looked excellent for an engine with 269,000 miles on it. Cylinder walls looked real good.
It didn't look promising to try to get that broken bolt out of the jackshaft. It's Ford only and is $351 with no bolts. Then add on the chains,guides,tensioners,gaskets,etc,it was gonna run in to some money. I found one in a wrecked 02 (same as ours),119,000 miles on it. Inside of the oil filler cap looks clean as new,oil looks clean,$700 exchange so I bought it.
The valves are recessed a good half inch,so none of those were damaged. The bearings all looked excellent for an engine with 269,000 miles on it. Cylinder walls looked real good.
It didn't look promising to try to get that broken bolt out of the jackshaft. It's Ford only and is $351 with no bolts. Then add on the chains,guides,tensioners,gaskets,etc,it was gonna run in to some money. I found one in a wrecked 02 (same as ours),119,000 miles on it. Inside of the oil filler cap looks clean as new,oil looks clean,$700 exchange so I bought it.