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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #91  
Old 01-31-2012, 10:33 AM
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You need to figure out how to spin the oil pump over with a drill and the oil pan full of oil or what ever...pichup tube submurged in a bucket or something. Gen 11 bb 383/440...the distributor has a large flat screw driver tip at the bottom of the shaft that spins the oil pump. Makes a good place to spin a makeshift shaft with a drill. Can you do something like thos with this engine? If not hook a water line or hose to to an oil fitting area on the block...somewhere you would put an oil pressure gauge w.ould be perfect. You would have to just step up the size of fitting to mate with water line source. Use something like an ice maker water line on a refrigerater.you dont need much pressure or size ...diameteter
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  #92  
Old 01-31-2012, 11:30 AM
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The oil pump on these 4.7's slips over the crankshaft, in behind the timing chain gears so there is no more spinning them up with drills.

I may be able to snag a lube pump from work and set it up like a filter press and use it to pressure up the system.

Last edited by IN2H2O; 01-31-2012 at 11:33 AM.
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  #93  
Old 01-31-2012, 11:38 AM
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Could a defective filter cause this to happen? Before I go too deep into my engine it might be worth spinning on a new oil filter?
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  #94  
Old 01-31-2012, 12:58 PM
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I don't know that it'd cause your issue, but a cheap filter with a poor (or no) anti drain back valve would not keep oil up at the lifters as well as a good filter.
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  #95  
Old 01-31-2012, 02:49 PM
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Are you using the same old oil pump? A good high volume oil pump would certainly help if you feel up to the task. Is this oil pressure fed from the top down or from the bottom up? You should track down your oil suply direction from the beginning to the end. I don't know this engine....is the lifters fed by way of lifter bores or pumped down the pushrods? Is the oil being fed down through holes in the heads, could the holes in question be restricted? I have yo go back and read but it't in the same cylinders...something transfered over from the original engine seems to be the culprit for sure...head gaskest restricting an oil passage? If it's in the same int/ex....it seems the only explanation. It driving me bananas and it's not even mine, lol! EDIT: I refreshed...go for a high volume oil pump.

Last edited by RadioFlyer; 01-31-2012 at 03:18 PM.
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  #96  
Old 01-31-2012, 05:39 PM
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I guess I missed listing it above but the oil pump is a brand new Mopar Oil pump. The other thing is that this engine was running strong before the rebuild so no issues to transfer over. The lifters ticked on startup like all the others but nothing like this.

I have an oil routing drawing I can upload and post. There are tubes that run up thru the block and into the head. I had the heads and engine hot tanked and I chased the passages but one never knows what is hiding down the galleries in the head.

I may tear into my spare engine for research yet...


Last edited by IN2H2O; 01-31-2012 at 06:02 PM.
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  #97  
Old 02-01-2012, 01:04 PM
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I'm thinking about rigging up a vacuum pump with an inline seperator and a bunch of clear flexible hose and run it down thru the plug at the rear of the head. If I size the hose correctly, I should be able to slip it all the way down the oil passage in the head and hopefully pick up any debris...

Does this sound crazy or just plain desperate?

Did you guys hear the joke about the gynecologist who went back to school to be a mechanic?
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  #98  
Old 02-01-2012, 07:40 PM
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Played around with it for a bit tonight on my spare engine and it should work out pretty slick and be possible to administer in the truck, just as long as the restriction is in the upper oil gallery...







http://www.mediafire.com/?fm619xf1mc36g0x

http://www.mediafire.com/?6y1vssy4n38si6k
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  #99  
Old 02-01-2012, 07:45 PM
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I would also put a high volume pump in it...just save the new one for the other engine. If you can get the oil pressure up to 40 lbs idling at running temp that should keep even the weakest lifter from tapping. I don't know what else to tell you. If you do swap the pump to a hvp, you can check for shavings or metalic powder...hopefuly there is none. You can try to change the releif valve spring to a high pressure one if yoy don't want to spend the cash on another pump. All this only if ur sure it's the lifters loosing pressure and not piston slap or something.
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  #100  
Old 02-01-2012, 08:03 PM
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You could also put some SS washers under the oil pump spring(although I don't know if it'd work with this type of pump...), it will allow a little more oil flow, sort of a cheap way to get more volume.
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