Engine Noise Still Happening

[SSGRHYMER]

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Posted 3 minutes ago

Hello Everyone

I had posted this in my first article today, but not sure if anyone could see it.

So I started a new one. I hope that is okay.

 

After over a month of troubleshooting the noise from my truck engine when driving. A few of you said to check my flywheel bolts and Transmission bearings. I did and found everything okay.

 

 I still cannot find this knock Rattle noise. So after going through everything, checking loose parts, bolts etc.

I took the Dodge for another drive. The engine is smooth and no noise at all,.

Oil pressure is a 60 when starting and after running for a few minutes. Its a 40-45. According to the Manual. This is good and correct.

Temperature after driving is about 170 ( It was 80 degrees outside today), I use 20w50 Oil and run 93 Octane fuel.

 

I drove for about 8 minutes with no noise at all and was happy. Then it started slowly again. 

It would make it when you accelerated and after changing 2nd to 3rd and 3rd to 4th. If the fourth gear after you are rolling pretty good. You do not hear it until you quickly accelerate.

 

I stopped, place it in neutral and clutch out. Rev the engine up high but not too much. It made the rattle/ knock on the high end for a few seconds until I left of the gas.

Then I put in Gear with Clutch Depressed. It did the same again.

 

I let the truck run, place the Ebrake on, and while my friend sat behind the wheel and held the brake. I crawled under the truck and had him accelerate. The noise was coming from the oil pan, but only on the high end acceleration. I checked it with my stethoscope and that is where the noise is the loudest.

 

I had the pan off earlier and did not see anything wrong, loose or broken. I cleaned pan, the filter and checked the teeth on the Oil Pump. Everything seemed okay. There was no big shavings in the pan either. Just really small particles (Gold dust type) in the sludge. Not that much.

 

There is no oil loss or overheating. The engine sounds great idling or a moderate speed. The engine is Dodge Flathead T37 from 1948 and has been rebuilt in 2007, Not that many miles, about 50,000

 

 

Something is making this happen after driving for a few minutes. I am at my wits end with the reason. I really  appreciate any advice, and hope it is not something I have to rebuild the engine. Other than this the trucks runs great. I hope I gave enough info, but not too much.

 

Thanks for any help at all. 

Respectfully

Curt