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| | | | Joined: Jun 2009 Posts: 6 New Guy | | New Guy Joined: Jun 2009 Posts: 6 | I have a 1960 apache 1.5 ton dual wheel i think it has a 235 in it. i think it might need bearings idle to about 1300rpm its quiet but aything faster it has a knock, it has a canister oil filter mounted on the intake. Were these engines eqipped with that from the factory or could it be something somebody added later on. I have also read about modifying the block for full pressure oiling how do i or can i tell if i have that or not with out tearing the engine down | | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | If that engine is original to the truck it will already have full pressure oiling.
What oil prfessure does it run now when hot at idle? Does it knock more after warm or does it change at all while warmiing up?
| | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | It will be Full Pressure, but not Full Flow Filtration. That was on 261 only (2 ton and larger). The filter could have been factory, but most liley was a dealer installed ad-on, especially if it is a Fram instead of AC.
From what I can tell, it sounds like you may have a rod bearing going sour. I would pul the pan and inspect the rods for exsessive play. A teardown might be in order, especially if the crank is damaged.
Bill Burmeister
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | 1960 Apache 40,
Although my guesstimates have been running poorly as of late, I will say that your explanation isn't consistent with a bad rod bearing in my estimation.
You should be able to make a rod knock at any RPM if you float the throttle. It wouldn't be necessary to bring the engine up to 1300 RPM. Have you looked at, or listened to the crank pulley or the water pump pulley. Wiggle stuff around a bit.
Stuart | | |
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