Gearheadloco
LVC Member
Gang,
If you ever wondered what a "spun" crankshaft main bearing looks like, here's one of two from my engine alongside a worn but intact neighbor
The other bearing spun itself into oblivion and was just a few shards in the bottom of the oil pan. Boy oh boy is it ever difficult to find crankshaft main and thrust bearings for the 3.9L V8. I've been able to find a good used crankshaft as these two bad bearings did a real number on my old crankshaft. Most of the parts required for a proper bottom-end rebuild of the 3.9L V8 just aren't available anymore. I was able to find new piston rings (Mahle) but almost everything else has to come from a dismantler as hopefully usable old parts. I've to ordered connecting rod bearings used in the S-type Jaguar 4.0L V8 from Terrys Jaguar (thanks to a referral from a member on this forum!)
Piston and Connecting Rod - V8: Terrys Jaguar Parts
... and I've just purchased used crankshaft main and thrust bearings on eBay, also from a S-type 4.0L Jaguar. Terry's Jaguar CAN get these S-type 4.0L crankshaft bearings new, so if the used S-type bearings are identical to my old LS 3.9L bearings then maybe I'm in luck. If you wondering my machinist buddy doesn't want me to re-use the crankshaft bearings from my engine because they were exposed to the fine metallic grit created when my bearings spun to death. I just hope I will have a choice!
Once we pick a bearing strategy and start to reassemble the engine, I'll take and post photos of my progress for your viewing pleasure.
Phil
San Diego
If you ever wondered what a "spun" crankshaft main bearing looks like, here's one of two from my engine alongside a worn but intact neighbor
The other bearing spun itself into oblivion and was just a few shards in the bottom of the oil pan. Boy oh boy is it ever difficult to find crankshaft main and thrust bearings for the 3.9L V8. I've been able to find a good used crankshaft as these two bad bearings did a real number on my old crankshaft. Most of the parts required for a proper bottom-end rebuild of the 3.9L V8 just aren't available anymore. I was able to find new piston rings (Mahle) but almost everything else has to come from a dismantler as hopefully usable old parts. I've to ordered connecting rod bearings used in the S-type Jaguar 4.0L V8 from Terrys Jaguar (thanks to a referral from a member on this forum!)
Piston and Connecting Rod - V8: Terrys Jaguar Parts
... and I've just purchased used crankshaft main and thrust bearings on eBay, also from a S-type 4.0L Jaguar. Terry's Jaguar CAN get these S-type 4.0L crankshaft bearings new, so if the used S-type bearings are identical to my old LS 3.9L bearings then maybe I'm in luck. If you wondering my machinist buddy doesn't want me to re-use the crankshaft bearings from my engine because they were exposed to the fine metallic grit created when my bearings spun to death. I just hope I will have a choice!
Once we pick a bearing strategy and start to reassemble the engine, I'll take and post photos of my progress for your viewing pleasure.
Phil
San Diego