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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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  #101  
Old 02-01-2012, 08:11 PM
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I'm going to try to suck out the oil gallery and see what that gets me. If that doesn't resolve anything then I will seriously be thinking about tearing the engine down again. Shimming the pump is a bandaid. Something is wrong and I have to find what it is if I want this engine to last 200K + miles.

On a more positive note, my oil leak seems to be resolved and I put my finger on the vacuum leak. The whistle is from the idle air pulling thru the PCV valve as I originally thought. I messed with it tonight and could not get the idle air motor to open at all. I am going to return it this weekend and get an OEM unit.
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  #102  
Old 02-02-2012, 01:19 AM
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Lol, shim the bad lifters not oil pump. Seems a simple 15 min job to me. With the lifter out you should be able to see how far recessed it is and judge thickness. Try it, you can't hurt anything especially idling if you start at 30 to 50 thousanths shim. If it's too tight tbe engine will just idle rough...have faith. Even if you did it to a good lifter it would just make it colapse that much...won't hurt anything...seriously! I only say high volume oil pump because thats the solution to weak lfters. I know this from hands on experience adjusting lifters and up to 110 lb oil pumps...yes 110 lbs! Never had to shim any lifter but I know adjusting both solid and hydraulic lifters very well. If you put a 50 thous shim under one it will just collapse that much. If you try it you will at leat elimiate the possible cause of the noise. After reading several topics, these 2002 lifters seem to be the culprit...good luck...I feel for you, lol!
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  #103  
Old 02-02-2012, 08:03 AM
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If you are going to go through the trouble of pulling the valve covers to shim the lifters, why not take a few minutes to actually measure and be sure they are right the first time? Why guess at it? I'm sure you have a caliper seeing you do a lot of work yourself, and it'll only take about a minute to measure each lifter. Just do it once and be done with it.
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  #104  
Old 02-02-2012, 12:10 PM
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Quote:
Originally Posted by snrusnak View Post
If you are going to go through the trouble of pulling the valve covers to shim the lifters, why not take a few minutes to actually measure and be sure they are right the first time? Why guess at it? I'm sure you have a caliper seeing you do a lot of work yourself, and it'll only take about a minute to measure each lifter. Just do it once and be done with it.
There's a c-clip at the top of a hydraulic lifter that holds the plunger in. Wth the lifter in question out, you can push the plunger down by hand and eyeball the distance see plenty of clearence (1/8"at least) for a lesser fifty thousanths. The guy in the vid used the max clearence of the plunger travel. He doesn't have to do that using an undersized shim. I guess if you don't know what 30 or 50 thousanths looks like then maybe he should measure it. But I would not start off with the whole 80 thousanths like the guy in the vid did. Of course he could drain an old lifter of oil and fill it up with resin to represent in solid form just to see if it solves the noise...it would still get lube, lol! But seriouly, if you could bump the oil pressure up with a high volume pump it would most likely solve this bleed down problem....that's what I would do! They're bleeding down because there is not enough oil getting to them so take the guess work out by getting the propper amount of pressure to it. I could put a high volume pump with a high pressure releif valve spring in it and blow the oil filter gasket off...bet the lifters won't bleed dow then.

Last edited by RadioFlyer; 02-02-2012 at 12:14 PM.
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  #105  
Old 02-02-2012, 12:58 PM
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I don't want to argue, my point is just that if your going to do it, why not takes 5 seconds to measure it and KNOW that it's shimmed to where it has the proper preload. Rather than try this size shim, then if it's not right try this size, etc...

I also agree that if the lifters are set up properly a high volume oil pump is not necessary. You shouldn't need to supply more oil than is supposed to be required. If you do then either the lifter is bad, not set appropriately, or the oil passage is blocked.
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  #106  
Old 02-02-2012, 03:09 PM
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Lol, If you were familiar with the location of the oil pump in these engines, you would strike the suggestion entirely and beg for forgiveness that you ever mentioned it.

I can and will measure clearances for sure when I pop the covers off. I have the perfect thin stainless washers that should drop right in, should shimming turn out to be the best solution.

Last edited by IN2H2O; 02-02-2012 at 03:14 PM.
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  #107  
Old 02-02-2012, 05:17 PM
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Quote:
Originally Posted by snrusnak View Post
I don't want to argue, my point is just that if your going to do it, why not takes 5 seconds to measure it and KNOW that it's shimmed to where it has the proper preload. Rather than try this size shim, then if it's not right try this size, etc...

I also agree that if the lifters are set up properly a high volume oil pump is not necessary. You shouldn't need to supply more oil than is supposed to be required. If you do then either the lifter is bad, not set appropriately, or the oil passage is blocked.
Lol...there you go contradicting yourself again by argueing. First of all, I'm not talking to you, I'm trying to share my opinion with IN2H20 without being chastized by ypu. I can see your point because you have no experience with anything I'm talking about. Lol, if you think the shims are the best way out then why don't you shim you $30k truck to improve yours. I'm sure the majoity would rather install a high volume pump. You keep saying measure it, measure it and I'm not saying not to but that it's not as critical as you make it sound. I'm saying that just because the guy in the vid used the maximum amount of shim possible doesn't mean you have to in this case. He says and in most cases with these engines that no matter how he swaps the lifters around the tapping appears in the same lifter bores. The oil passage may or not be blocked but it appears to be poor oil pressure design to me...something a high volume pump would cure.
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  #108  
Old 02-02-2012, 05:43 PM
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Quote:
if you think the shims are the best way out then why don't you shim you $30k truck to improve yours.
Why would I shim mine that don't have any issues?

Quote:
I'm saying that just because the guy in the vid used the maximum amount of shim possible doesn't mean you have to in this case.
The guy in the video did not use the maximum amount of shim possible, he used the proper amount, which put the plunger half way through it's range, so the lifter was about 50% preloaded. This is how it should be done.

Quote:
He says and in most cases with these engines that no matter how he swaps the lifters around the tapping appears in the same lifter bores. The oil passage may or not be blocked but it appears to be poor oil pressure design to me.
The reason that swapping lifters doesn't cure the problem is because that bore in the head is drilled slightly further than the others. The only way to get it right is to shim it. A high volume oil pump could possibly remedy the tapping, but the lifter would still not be preloaded to the correct amount. It may resolve the issue but it's not really the right way to do it, the lifter wouldn't be preloaded to the right amount.

I'm not contradicting anything, chastizing anyone, or whatever else you want to say, I'm just giving some helpful info so he can get his engine running properly. Measuring and adjusting based on the measurements is the correct way to do it. Do you eyeball the gap on your spark plugs? Do you eyeball the clearance on main bearings? Do you eyeball piston ring gap? You could, and it would probably run, but it won't run like it's supposed to and won't last as long as it's supposed to.
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  #109  
Old 02-02-2012, 06:12 PM
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As for just tossing in a HV pump, First you have to remove all of this...


And then remove all of this...


And you will find the oil pump nestled in behind all of this...

Still think it's easier to just toss in an HV pump? If one is even available?

Last edited by IN2H2O; 02-02-2012 at 06:15 PM.
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  #110  
Old 02-02-2012, 06:23 PM
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I think you two seem to have forgotten that this engine ran perfectly quiet for over 800 miles before starting to clack. If the bore is too deep then it would have always been too deep.
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