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Old 05-30-2018, 05:12 PM
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Pioneer Oil Pump Pick-up Retainer

I wish I could remember who posted the suggestion to use the Pioneer pick-up retainer so I could thank them. I had been considering how to make sure the pick-up doesn't come out of the pump and then I came across a thread here where someone suggested this thing. I ordered it from Summit and it looks like it will work well. Just thought I'd post a couple of pics so folks could see how it works:




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Old 05-30-2018, 05:37 PM
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x2 very cheap insurance..
.
if not using the retainer, I at least put a little safety wire on them..
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Old 05-30-2018, 05:48 PM
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I have not used that particular retainer, but have a question.

Does it grip the neck of the pick-up tight enough to prevent rotation, or is it just to prevent the pick-up tube from moving out of the pump body??
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Old 05-30-2018, 05:53 PM
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Quote:
Originally Posted by ericnova72 View Post
I have not used that particular retainer, but have a question.

Does it grip the neck of the pick-up tight enough to prevent rotation, or is it just to prevent the pick-up tube from moving out of the pump body??
At least for a .750" tube it will prevent rotation:

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Old 05-30-2018, 06:07 PM
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I used one of those on a 1991 Chevrolet Blazer 4.3L v6. You should tighten the brace to the pump and tube then spot weld the brace to the pick up tube then remove the bolt. The bolt may loosen and drop into the oil pan.

I was told that an employee at Jegs designed that brace.
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Old 05-30-2018, 06:12 PM
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Quote:
Originally Posted by MouseFink View Post
I used one of those on a 1991 Chevrolet Blazer 4.3L v6. You should tighten the brace to the pump and tube then spot weld the brace to the pick up tube then remove the bolt. The bolt may loosen and drop into the oil pan.

I was told that an employee at Jegs designed that brace.
It's a Nylock nut and I put some green loctite on it for extra insurance. Not too worried about it.
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Old 05-30-2018, 06:36 PM
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Looks like the addition of a couple of flat washers would get it to close up even tighter.
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Old 05-30-2018, 07:06 PM
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Quote:
Originally Posted by ericnova72 View Post
Looks like the addition of a couple of flat washers would get it to close up even tighter.
About as tight as she's gonna get with a couple of hardened washers:



Don't think it's going anywhere.
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Old 05-30-2018, 08:26 PM
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That's a dandy piece, thanks for sharing....
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Old 05-30-2018, 09:08 PM
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Quote:
Originally Posted by tyler2you View Post
About as tight as she's gonna get with a couple of hardened washers:



Don't think it's going anywhere.
I was mostly just thinking aloud, not specific to your installation....a couple of larger diameter washers could tighten it up even more, good for a guy who may be re-using a looser fitting original pick-up.

Back in the old days you could hardly find a parts vendor who stocked replacement pick-ups, it was just a fact of life you were stuck re-using the old one or waiting, up tp a week or two, for a new ordered one to show up at your local parts guy.....that is basically where all the "tack weld or braze" rule of thumb started up, to hold those looser fitting used pick-ups back on and prevent them falling off.

That's todays history lesson for the younger rodders out there.
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Old 05-31-2018, 11:07 AM
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Use caution when tightening the oil pump bottom plate bolts with the pick up brace under the bolt heads. The small bolts threads are in a cast iron oil pump and those threads cannot withstand very much torque. It may be a better option is to use studs in the oil pump to attach the oil pick up brace and use LockTite on all threads.

I would not trust a nylock nut anywhere on the oil pump or on the brace. Too much heat and vibration.

I used that brace on a 1991 Chevrolet Blazer 4.3L v6 4WD oil pump. The oil pump pick up tube on that engine is 8 inches long in a oil pan that is 9 inches deep! I had the pick up tube MIG welded to the brace and then removed the nut and bolt.

Last edited by MouseFink; 05-31-2018 at 11:18 AM.
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Old 05-31-2018, 12:24 PM
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Ive used a few of these, used to get them from Northern. Always worked well.
I never used Loctite on a Nylock, I was worried it might do something to the nylon. I "think" the temp threshhold for a nylock is 250 degrees, but its been a LONG time.
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Old 05-31-2018, 12:47 PM
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Quote:
Originally Posted by AutoGear View Post
I "think" the temp threshhold for a nylock is 250 degrees, but its been a LONG time.
So that's probably not enough considering oil temp could typically be in the 220-240 degree range? Might be better to just use a locking washer and Loctite or spot weld as MouseFink suggested.
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Old 05-31-2018, 12:58 PM
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Belt and suspenders I think. I talked to my Engineer here at work, and he pointed out that we had problems with Lexan and loctite, but nylon bushings were unaffected. As far as the temp range; I can't answer that. Tackwelding isn't fool proof either, theres a litany of pick-up truck 5 speeds that used a nut to keep 5th gear from moving. Tackwelding doesn't work there. I think given the low stress, but high vibration...you'll be okay either way. If one of the usual suspects has more first hand knowledge; go with that. I wouldn't use a SPLIT washer, they can lose their spring and then the nut has room. Use a Star washer and RED loctite on the nut; or a good hot weld.
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Old 05-31-2018, 04:06 PM
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I have seen new oil pumps with a countersunk star washer under the countersunk bottom plate bolts. I don’t recall the brand but they were not GM pumps.

Pontiac offered parts for 1970 455 SD / Ram Air IV Pontiac 80 lb oil pump with a thick bottom plate. You could buy those thick bottom plates, a longer 80 lb by-pass spring and a extended retainer from a Pontiac Dealership parts department separately to upgrade a stock 50 lb oil pump. Those parts were discontinued about fifteen years ago. I bought several of those parts about 1998 when I was still into Pontiac drag racing.

You had to buy Pontiac high performance parts in larger quantities because you never know when they were going to be “DISCONTINUED” by the Pontiac Motor Division.
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