X died on the freeway last night - broken timing belt?

[onewaysoldier]

Pulled the bottom end apart today.  The #5 bearing was bad.  finishing the polish on the crank tomorrow morning.  Figured out that improper pre lube caused the bearing to burn and fail.  Should be up and running again on Tuesday afternoon. 

[AV Xterra]

Don't you ever sleep? 

[onewaysoldier]

Don't you ever sleep? 

Only when it's convenient or I'm so tired I can't focus anymore.

[onewaysoldier]

Not that it matter anymore, but...  I heard another small rod knocking sound on Tuesday after I finished replacing the #5 bearing.  At that point I decided to just replace the rod bearings again now that I know I didn't prelube properly the first time.

So on Friday I swapped out the entire rod bearing set and properly pre-lubricated the crank, bearings, & rod with white grease.  Additionally, I pulled the distributor plug and turned the engine over for about 30 seconds before starting the truck up to build oil pressure and properly pre-lubricate everything again.

Now the trucks running good.  I'll post up some pictures in a couple days of what good and bad xterra rod bearing look like.

I'm pretty sure I could swap out a timing belt now in about 3 to 4 hours total now.  It's actually not too tough.

[ultrapc40]

where do I sign up, i need to do my knock sensor, i was thinking about putting in a fresh SC and doing the timing and h20 pump at the same time.

[onewaysoldier]

where do I sign up, i need to do my knock sensor, i was thinking about putting in a fresh SC and doing the timing and h20 pump at the same time.

Sure dude, sounds good.  Give me a few weeks.  I need to finish a Top Secret project I'm working on first. 

[onewaysoldier]

....... Rod bearings went bad again. Third set..  I think the crank or a couple of the rods may have gone out of round.  Or, the oil pressure is some how to low.  Any ideas on how to monitor to watch the oil pressure?

Pulling the crank out and the rods next week and taking them to the machine shop to get checked for round and possibly get them turned.....

[XterracerX]

Perhaps installing an oil pressure gauge?
I know our X's are limited to temperature, RPM, speedometer and fuel gauge.

[superslidestyle]

Not that it matter anymore, but...  I heard another small rod knocking sound on Tuesday after I finished replacing the #5 bearing.  At that point I decided to just replace the rod bearings again now that I know I didn't prelube properly the first time.

So on Friday I swapped out the entire rod bearing set and properly pre-lubricated the crank, bearings, & rod with white grease.  Additionally, I pulled the distributor plug and turned the engine over for about 30 seconds before starting the truck up to build oil pressure and properly pre-lubricate everything again.

Now the trucks running good.  I'll post up some pictures in a couple days of what good and bad xterra rod bearing look like.

I'm pretty sure I could swap out a timing belt now in about 3 to 4 hours total now.  It's actually not too tough.

NO, NOT WHITE GREASE!!!.  That's not the right one for motors.  You HAVE TO USE "assembly lube".  You also have to check the gap before the final installation of the bearings.  If you've never rebuilt a motor properly before, I think you should leave the bottom end to a professional machine shop to only assemble it.  The bottom end is the most critical part of the entire car.  You can't just slap parts together and expect them to work.  There are tolerances that must be kept for proper long term use.