Agreed. Everyone whom I’ve talked with or shared the picture is amazed at both the cap breaking and the fact that I might have been driving this thing for tens of thousands of miles without even knowing.That broken main bearing cap is insane.
Can we see a pic of the fracture surface please?Agreed. Everyone whom I’ve talked with or shared the picture is amazed at both the cap breaking and the fact that I might have been driving this thing for tens of thousands of miles without even knowing.
Really speaks highly to the robust engine design.
Agreed. Probably occurred during the flop when the engine ran for about another 30-40 seconds.The inside corner on the bottom of the cap is a stress riser - but still that's a beefy cap on a 5 main 4 cylinder. Must have happened when you tipped it on it's side
Looking at the witness marks on the exterior of the lower shell - it was working against the larger piece of the cap and tho it was flexing it held. Amazing.
sounds like a good shop. I would make sure and give them the liner protrusion specs so they can check those and see ifnthey need to counterbore or notPlan has been set.
1. Interviewed machine shop and they have line boring equipment, work on diesel engines, and have an older guy who has done machine work to Toyota diesels from his time in industrial applications.
2. Machine shop will line bore main caps, do a run out test of crankshaft, and go from there regarding best course of action.
3. Machine shop will press out old cam bearings and install new ones.
4. Machine shop will remove old oil jet and install new ones.
5. Machine shop will press out and install new cylinder liners (if needed-- they have cleaned up pretty impressively with just my home brew flex hone from Amazon.)
Then, I'll clean up, paint, and built out the rest of the engine.
Replacement bearing cap should be here early next week, so parts will go to machine shop next week with a 8-10 day turn around. Gives me plenty of time to clean ancillary parts, prepare garage for block, finish up the head, etc.