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Old 08-12-2010, 09:03 PM
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Oil pick up tube

Forgive me if my terminology is not accurate. I changed my oil pan gasket and the oil pick up tube flat with filter screen facing bottom of oil pan as I had been instructed by a friend? Now after putting everything back there is a thud sound coming from oil pan ? My oil pressure is 45 is the crank hitting the pick up tube?

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Old 08-13-2010, 03:12 AM
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Quote:
Originally Posted by truckboy61
Forgive me if my terminology is not accurate. I changed my oil pan gasket and the oil pick up tube flat with filter screen facing bottom of oil pan as I had been instructed by a friend? Now after putting everything back there is a thud sound coming from oil pan ? My oil pressure is 45 is the crank hitting the pick up tube?
Are you saying you removed then replaced the pick up tube/screen assembly, along w/the gasket?
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Old 08-13-2010, 07:10 AM
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Yes, as I pulled the pan I bumped the tube and it fell into the pan ? I realized it had been siliconed into place? I was not sure of the proper placement of the tube ? Either straight down with the screen facing side of pan or flat with screen facing directly down ? I called a friend who said face down? Now there is a " thud " sound in oil pan? Looked on jegs at BBC oil pick up tubes and the one I have is correct? It is listed for 16 bucks and is the five inch curved with round screen type? Another problem is I placed it in with JB weld ! How would I take it out?
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Old 08-13-2010, 08:43 AM
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Quote:
Originally Posted by truckboy61
Yes, as I pulled the pan I bumped the tube and it fell into the pan ? I realized it had been siliconed into place? I was not sure of the proper placement of the tube ? Either straight down with the screen facing side of pan or flat with screen facing directly down ? I called a friend who said face down? Now there is a " thud " sound in oil pan? Looked on jegs at BBC oil pick up tubes and the one I have is correct? It is listed for 16 bucks and is the five inch curved with round screen type? Another problem is I placed it in with JB weld ! How would I take it out?
The pick up has to be pressed into the oil pump. This is a tight fit, not anything that you'd want to trust to JB Weld or silicone. Reinstalling an old pick up will not provide the same press fit that's needed to secure it w/o having it vibrate loose- like yours has done.

You need to remove the oil pump, carefully hold it in place w/a vice, grasp the old pick up and give it a twist- it will come right back off. Then using a tool like the one shown below (the exact dimensions are in the Chevy Power manual, IIRC, and probably also available somewhere online), install the pick up into the housing.

Another thing you could do, it take the pump and the new pick up to your machinist to install.

It is often recommended to braze, spot weld, or use some form of bolt-on clamp sold for the purpose to help hold the pick up on. I've never had a problem installing the pick up w/Loctite #640 and the tool shown- the choice is yours.

BUT- you cannot run the engine the way it now is! At the very least, air is getting pulled into the pump along w/the oil- causing the oil to emulsify- and this is death on bearings, etc.

You were told right about the orientation of the screen- it faces the bottom of the pan- not the side. There needs to be 5/16"-3/8" clearance between the pick up and the bottom of the pan.
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Old 08-13-2010, 10:40 AM
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How much clearance does tube need from crank? In order to prevent it from hitting ? Thanks for the info
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Old 08-13-2010, 01:28 PM
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Quote:
Originally Posted by truckboy61
How much clearance does tube need from crank? In order to prevent it from hitting ? Thanks for the info
If the pick up is installed correctly, it will not interfere w/the crankshaft.
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Old 08-13-2010, 06:49 PM
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Quote:
Originally Posted by cobalt327
The pick up has to be pressed into the oil pump. This is a tight fit, not anything that you'd want to trust to JB Weld or silicone. Reinstalling an old pick up will not provide the same press fit that's needed to secure it w/o having it vibrate loose- like yours has done.

You need to remove the oil pump, carefully hold it in place w/a vice, grasp the old pick up and give it a twist- it will come right back off. Then using a tool like the one shown below (the exact dimensions are in the Chevy Power manual, IIRC, and probably also available somewhere online), install the pick up into the housing.

Another thing you could do, it take the pump and the new pick up to your machinist to install.

It is often recommended to braze, spot weld, or use some form of bolt-on clamp sold for the purpose to help hold the pick up on. I've never had a problem installing the pick up w/Loctite #640 and the tool shown- the choice is yours.

BUT- you cannot run the engine the way it now is! At the very least, air is getting pulled into the pump along w/the oil- causing the oil to emulsify- and this is death on bearings, etc.

You were told right about the orientation of the screen- it faces the bottom of the pan- not the side. There needs to be 5/16"-3/8" clearance between the pick up and the bottom of the pan.
I drilled and tapped my oil pump for a 1/4" set screw and used Cat 6640 . Smells like Loctite so I suspect it is made by Loctite . Probably the #640 Cobalt uses . Use a straight edge and ruler to check the depth of your pan and then measure from the bottom of the pickup to the pan rail on the engine . Set at 5/16 to 3/8 less as Cobalt327 said and there should be no problems .
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