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Generation III Internal Engine
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Old 08-31-2013, 08:34 PM   #1
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Default Oil Pump Pickup Tube

After seeing some photos of some untouched engines, the pickup tube seems to be flush with the pump when installed. On my 5.3L, it is mostly flush, but towards the side without the bolt, it comes up from the pump a tad. Should this be an issue? It seals well with the new O-Ring, but I am not taking any changes with this engine.
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Oil Pump Pickup Tube-img_0201done.jpg  
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer

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Old 08-31-2013, 08:59 PM   #2
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It looks fine to me...
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Old 08-31-2013, 09:01 PM   #3
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It should be flush.

I bet that o-ring is piched in there like that.

Do not leave it that way.
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Old 09-01-2013, 05:09 AM   #4
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Fix that for sure! I'd replace the oring and buy a truss kit so you can use both bolt holes to hold the pickup in place. GM engineers need to pull their heads outta their azzes..........
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Old 09-01-2013, 05:38 AM   #5
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Thanks for the input. Guess the pan is coming off once again. Lol
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-01-2013, 06:18 AM   #6
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as others have said, I would also not be comfortable with that. Make absolutely sure that the oring is not pinched.

Here's how it looked on my 5.3 block with the un-modified 5.3 pickup tube.

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Old 09-01-2013, 06:36 AM   #7
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While you are checking, be sure that the tube mount further to the rear is not in a bind...Mine was, and needed some TLC to allow the tube/o'ring to seat correctly.
The BRP "girdle" is a good idea.
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Old 09-01-2013, 06:51 AM   #8
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Yeah...you need to fix that pick-up tube installation as stated. Make it flush with the oil pump, also a girdle which isn't needed doesn't hurt either.

http://www.classicindustries.com/196...s/1026000.html
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Old 09-01-2013, 02:24 PM   #9
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Upon inspection, the O-Ring was seated perfectly. I suppose that the pickup tube itself is cocked a little which led to it appearing as if it was not correctly installed. The O-Ring came out perfect and went back in perfect. Can't count on quality this day in age...
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-01-2013, 06:57 PM   #10
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Anyone know the thread specs for the threads on the oil pump?
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-01-2013, 08:21 PM   #11
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Quote:
Originally Posted by Treyvs View Post
Anyone know the thread specs for the threads on the oil pump?
What happened? you stripped the oil pickup tube bolt thread on the pump?
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Old 09-01-2013, 09:02 PM   #12
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No, thought of an idea, but just decided to go ahead and purchase the girdle instead.
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-01-2013, 09:07 PM   #13
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I Would try to adjust that. They also sell an adapter than allows you to clamp the tube down on both sides.
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Old 09-01-2013, 09:18 PM   #14
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I took the tube off today and I believe that the tube itself is flawed, so I think the girdle will do the trick to keep the O-Ring sealed and not let air in.

Even though I think everything will be fine, I don't want to put my $4800 engine on the line for a silly/lazy mistake.

I will post a photo when completed.
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-01-2013, 09:22 PM   #15
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Quote:
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No, thought of an idea, but just decided to go ahead and purchase the girdle instead.
I think it is M6 X 1.0
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Old 09-01-2013, 09:30 PM   #16
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Quote:
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I think it is M6 X 1.0

http://www.brphotrods.com/mm5/mercha...gory_Code=CNV6
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Old 09-02-2013, 10:43 AM   #17
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The girdle should get here later this week and I will update you guys with how it turns out.
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-06-2013, 04:28 AM   #18
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Well, I received the girdle yesterday and decided not to wait until the weekend to install it. The girdle comes with two bolts, as to replace the GM bolt. Upon trying to install the girdle, one of the bolts decided to break in half while threading.

With some needle nose pliers and some choice words, I was able to coax it out of the threads of the oil pump. I then went back and tried to use the GM bolt along with one of the bolts from the kit, and then the GM bolt's threads decided to fail and fall off.

Today, I am going to get the strongest bolts on the planet for this thing, just as long as the threads in the oil pump are still in good shape...

I recommend the girdle, just discard the supplied bolts.

One more post to follow with photos of the girdle installed.
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-06-2013, 05:34 AM   #19
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It sounds like you have much bigger problems than weak bolts. Part of knowing how to assemble a threaded fastener is to stop and back off if something starts binding.

Did you test fit the bolts in the oil pump first?
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2006 Dodge Magnum SRT8 (Daily Driver), OEM 6.1 Hemi, 4.055" bore, forged crankshaft, piston oil squirters, shaft mount rockers. Absolutely no EGR, MDS, VVT, DOD, etc., Pirelli Pzero 275's all around.
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Old 09-06-2013, 11:40 AM   #20
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That is the odd thing. The bolt threaded perfectly and upon torquing to spec, it gave up. Not one time did it bind. The other side, however did bind and it even appears as though the threads in the pump are screwed up. I will inspect it closer tonight.
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Daily - 1986 C10, original 305 c.i., and 700R4, 154K. Holds 30psi at idle....hooray for Lucas Oil Stabilizer
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Old 09-06-2013, 11:40 AM
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