1FZFE Sound After Rebuild

[Kylackey]

Hey MUD,

Long story short. Truck has been gone through tip to tail. Full rebuild, All toyota parts ect ect.. Truck has about 10k on the rebuild, and to my knowledge I have footage of it running on first start up but I can't tell if it has always made the sound.

Can you guys let me know if this sound at idle is normal? I dont have anyone local to me or anybody with another 1FZ to even compare this sound to. Sounds like a hollow tin "ish" kinda clatter in the bottom end. Does not transfer to the top end, front cover, steel oil pan, trans, exhaust, pulleys, nothing. Strictly right in the middle of the upper oil pan.

I've isolated it to the upper oil pan, front of the motor and the video attached showcases the sound pretty perfect and the exact location. It's pretty pronounced. If anybody could just let me know that I'm not going crazy or if this is something abnormal?

Edit: Not sure if I'm freaking myself out if it's rod knock. If someone has more input/experience.


Thanks - Kyle.

 

[Kylackey]

I'll update this as I go along. It's late, in the morning I'm going to double check that it's not a belt/pulley issue.

 

[robnicko]

I'll update this as I go along. It's late, in the morning I'm going to double check that it's not a belt/pulley issue.

either remove the belts temporarily or hose them down with water to eliminate any noise they and or pulleys make

 

[Kylackey]

So I looked back at my records. Ive put 14,800 miles on it since being rebuilt. I'm hoping some 1FZ nuts can help me here...

The shop that rebuilt filled it with break in oil prior, and had primed the oil pump.

No belts and it sounds the exact same. Anyone have any guesses? I haven't done an oil sample in about 3 years and that was when I was still running conventional oil. Here's that sample, but that was when the truck had 5k miles. I've missed about 10k miles of samples after that one.