440 new motor oil pressure problems
#622155
02/23/10 08:53 PM
02/23/10 08:53 PM
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Joined: Jun 2004
Posts: 196
Texas
440maxwedge
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Texas
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Okay, this one has me stumped. '68 440 freshly rebuilt bored, resized rods, new pistons, hughes cam (hydraulic), everything new. Anyway, while using the prime rod, drill I have resistance (enough to nearly stop the drill on high speed), rotate engine and get plenty of oil to the right side rockers, not so much on the left. I have no oil going to the sending unit NONE. If I had a oil galley plug missing, I would have no oil pressure, but it is pumping oil to the right valve train when the cam is turned to feed it. I thought of restriction, but the galley that feeds under the lifter is a pretty good diameter. Not sure if front galley plug is missing, would it still build pressure? Never had this happen before. Any ideas? 
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Re: 440 new motor oil pressure problems
[Re: 440challenger]
#622159
02/23/10 09:27 PM
02/23/10 09:27 PM
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Joined: Feb 2003
Posts: 4,503
NJ
440challenger
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NJ
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Did you slowly rotate the motor counter clockwise as you were priming? the valve gear only gets a shot of oil every two revolutions or so if i remember correctly
Are the holes on the rocker shafts pointing the correct way?
Last edited by 440challenger; 02/23/10 09:28 PM.
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Re: 440 new motor oil pressure problems
[Re: 440maxwedge]
#622163
02/24/10 11:13 AM
02/24/10 11:13 AM
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Joined: Jan 2003
Posts: 4,247
Newfoundland
codfish
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Newfoundland
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Quote:
I thought if one galley plug is missing anywhere, you would not have any pressure. I have pressure while turning the pump, just nothing in the sending unit galley.
Just a thought, but maybe you don't have much pressure at all. Maybe it's just the resistance of the pump moving the oil that you're feeling at the drill.
See if you can get a buddy to slowly turn the crank (to the 90* intervals) while you keep the drill going. And you're using a big a$$ drill right?
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Re: 440 new motor oil pressure problems
[Re: 440maxwedge]
#622165
02/24/10 09:26 PM
02/24/10 09:26 PM
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Joined: Jun 2004
Posts: 196
Texas
440maxwedge
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Texas
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Update: I took the front of the motor down,removed the timing set, and the galley plugs were in. I removed the one that feeds under the lifters, blew air through it, ran a wire under the lifters all the way to the back, ran a wire on both fitting holes at the back of the block were the sender goes. I felt the wire hit something, worked it back and forth. I put the plug back in, primed the pump, blew out hard chunks of looked like tar with the oil. Hooked up the guage and have 75 lbs of pressure with the drill. I primed it for a little while, oil clean now. Going back together. Thanks for all you guys input!! I will clean the oil galleys myself from now on. The machine shop replaced the plugs (they were new), so I thought they cleaned it (NOT)...Thanks!! 
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Re: 440 new motor oil pressure problems
[Re: Grassosgarage]
#622167
02/24/10 11:43 PM
02/24/10 11:43 PM
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Joined: Feb 2005
Posts: 4,884
Michigan
MNobody
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Michigan
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Quote:
I would disassemble and clean the whole thing again yourself. I've seen junk like that lock up an oil pump. You're gonna hate life if there's a chunk of something left somewhere else in there....
 Sounds like a "why did my motor blow up" post waiting to happen.
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Re: 440 new motor oil pressure problems
[Re: fastmark]
#622170
02/25/10 12:18 AM
02/25/10 12:18 AM
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Joined: Jan 2003
Posts: 6,407
Abilene, Texas
fastmark
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Abilene, Texas
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Quote:
Who assembled the motor? Without going to the shop and looking at manuals and a bare block, I could not help much. No oil to the sending unit is not good. I always wash my motors out real good before I assemble them and use a brush to clean all oil galleys. That way I can check for blockage. I squirt water in every hole. You either have a plug gone or its blocked. If you do not have oil to one side of the head, then it is most likely the cam bearing is installed with the hole not lined up. That is the very first thing I check before I even wash a block. I run a long drill bit down the hole to make sure. Sounds like that may be your problem there.
One thing I do is remove all of the plugs myself before the shop gets them. I do not give them the plugs to install them. That's my job. If they forget, then some crap could still be in them.
That is why I posted my priority in an engine build. I have one of the best engine machinists in the business. I leave nothing to chance. I never assume he or his employee did something and just go on. Remember that crap you blew out is past the filter and pickup screen and what ever is left is going right to your bearings.
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