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Discussion Starter #1
My oil pressure's goin' south in my 22re (161k miles) and in hopes the major reason for low pressure at idle is wear in the oil pump, I'm gonna give replacing it a try.

Just recently did the headgasket, chain, tensioner, guides with Toy factory parts;

here are the options:
Toy factory $225 (only shopped one dealer so may be better prices elsewhere)
LC Engineering = $141.75
Kragen Auto parts= $98.00

I'm leaning towards the LCE high cap pump but am hard pressed to use anything but factory parts since they always seem to be more reliable. LCE says they start with a new factory pump and upgrade it so maybe thats the best deal.

As far as the Kragen pump goes, don't have a clue to it's pedigree and was hoping someone could share their experience with one.

Any suggestions appreciated!!
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Dogsailernull
 

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try ted at www.engnbldr.com he is on ebay alot and has the best prices on ones that I have seen. I have one in mine. <IMG SRC="smilies/biggrin.gif" border="0">
 

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You might think about upgrading to a turbo oil pump 'cuz it provides higher pressure. I've been told that it bolts right in.
 

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hey-

i've got the LC E pump in my '87.
pressure at idle is what the old pump put out at 3000 rpm. also, the pressure drop at idle is much less that the stock pump. I need to get a real guage in the truck one of these days! between the new pump and dual 1 qt. filters, it's set. capacity is now 6.5 qts.
 

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First off, I'd be willing to bet the low oil pressure is caused by bearing wear. With that mileage and a stock bottom end, that would be my first guess. I have never seen an oil pump go bad unless the pump has been run dry but this will also cause other mechanical problems.

I have checked with several different parts house about oil pumps and nobody lists a difference between turbo and non turbo. Napa, Car Quest, Autozone, etc. The only one I found with a difference is the dealer. What is the actual difference???

I'm running a Melling pump from Autozone. $50 with a 2 year warranty.
 

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Discussion Starter #7
First off, I'd be willing to bet the low oil pressure is caused by bearing wear. With that mileage and a stock bottom end, that would be my first guess.

That's my guess too, but thought I'd give a new pump a shot...after all it'll still be good and something I'd add during a major overhaul anyway. This particular engine has been on pure Mobile 1 since mile 500. Religeous change of factory filter every 2500 miles and oil change and factory filter when I get 5000 on the oil.

I'm wondering. If it is bottom end bearings is there any benefit to the "drop the pan and roll in some new ones" tactic I've heard a few talk about...anybody had luck doing this? How long did they/have they held up?

I figure if the mains are gone enough to drop the pressure, it'll need a crank grind and new mains won't last long.

I have never seen an oil pump go bad unless the pump has been run dry but this will also cause other mechanical problems.

I had a headgasket failure and thought a small bit of water in the oil (very little} might have contributed to oil pump failure. anyway, if a new pump will bring the pressure up it may help delay the enevitable.

Seems like what I hear is the pump never "fails" outright, but a new one WILL pick up the pressure sometimes considerably.

Thanks every one for the info. I'm gonna go with the LC and get back with a report once it's in.

Dogsailer
 
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