Oil pump pickup - tack weld or don't weld

cad · 02-06-2012, 11:33 AM

We've just finished a complete refresh on my small block chevy.
Late last summer, we began having a few oil pressure anomalies. When we tore it down, we discovered the Milodon screen/box broke off of the end of the tube.
I froze and then installed the new Milodon pick up tube assm in the M55HV. I got it "seated" completely into the pump, put it back together, and then had to rotate it slightly to get the pan clearance.
Milodon said do not weld the tube to the pump and they also recommended their "extreme duty" pick up 18316.
What is the concensus?
Should the pick up be tack welded to the pump?

Thanks,
Clark Doukas

richie 2 · 02-06-2012, 11:53 AM

a touch of weld is extra insurance...remove the relief spring first as not to weakin it due to the heat. better yet, mellings sells their performance pump w/adjustable relief tension and a bolt on pickup. various pickup lengths for different depth pans.

ron mattson · 02-06-2012, 04:56 PM

Just make a sheetmetal tab to weld on the pickup tube that has a 1/4 inch hole
in it to go to one of the bolts that hold on the pumps bottom plate and bolt it there.

cad · 02-06-2012, 05:58 PM

It has a strap built on, but I think the pickup could still rotate down a little.
Im thinking the previous Milodon pickup rotated down, contacted the pan, and then the vibration/contact broke it off.

This is the "extreme duty" pickup that was recommended:
http://www.jegs.com/i/Milodon/697/18316/10001/-1

I had a 18314 on prior. Identical except for the gussett that they added.

ron mattson · 02-06-2012, 06:03 PM

That pickup has the strap i was talking about right on it, if your having issues with it
still rotating i would put a little Permatex sleeve retaining compound on before putting
the pickup into the pump, between that and the strap it will not move.

Glenn Briglio · 02-06-2012, 06:28 PM

Full weld it and forget it if it has bracket bolted to pump.

Lew Silverman · 02-07-2012, 12:16 AM

The only difference between the 18314 and the 18316 is a brace welded on the pick-up itself to strengthen where it welds to the pick-up tube. This is extra insurance to keep the pick-up from separating from the tube. The special CNC-bung is specifically designed to be a snug press fit into the oil pump and with the attached brace bolted to the pump cover, and the Permatex locking compound Ron mentioned, welding shouldn't be necessary.

Lew

MAURICE BLENDHEIM · 02-07-2012, 02:55 AM

Clark... Over the years I've seen this with that brand of oil pick up. What I would recommend the next time you freshen your engine check out the Moroso pump-pick up package, this combination comes fully tig welded and includes a new pump drive shaft. Most aftermarket oil pans have comparable depths, Moroso has several different configurations that work without doubt.

cad · 02-07-2012, 09:08 AM

Thank you for your responses.
I tacked it and we should be good2go.
I've looked at the other pumps and pickups. Nice pieces.

Clark

63corvette · 02-07-2012, 10:57 AM

I have been at this for 40 plus years and I can tell you I have had the spot welds brake and the tube come out.
I have had pumps with brackets on them bolted to the pump and I would spot weld them and the bracket would break at various points and the spot weld break also and the tube fall out.
The only true way to make sure the tube never comes out is to weld it fully all the way around the tube. I have used brass and tig to full weld it and can say one is just as good as the other. They both worked for me.
The full round weld is the ONLY way to make sure you never have the tube coming out.
My 2 Cents
Rick Cates

02-06-2012, 11:33 AM	#1
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 691 Likes: 188 Liked 87 Times in 48 Posts	Oil pump pickup - tack weld or don't weld We've just finished a complete refresh on my small block chevy. Late last summer, we began having a few oil pressure anomalies. When we tore it down, we discovered the Milodon screen/box broke off of the end of the tube. I froze and then installed the new Milodon pick up tube assm in the M55HV. I got it "seated" completely into the pump, put it back together, and then had to rotate it slightly to get the pan clearance. Milodon said do not weld the tube to the pump and they also recommended their "extreme duty" pick up 18316. What is the concensus? Should the pick up be tack welded to the pump? Thanks, Clark Doukas Last edited by cad; 02-06-2012 at 11:35 AM.

02-06-2012, 11:53 AM	#2
richie 2 Senior Member Join Date: Feb 2009 Posts: 963 Likes: 408 Liked 199 Times in 90 Posts	Re: Oil pump pickup - tack weld or don't weld a touch of weld is extra insurance...remove the relief spring first as not to weakin it due to the heat. better yet, mellings sells their performance pump w/adjustable relief tension and a bolt on pickup. various pickup lengths for different depth pans.

02-06-2012, 04:56 PM	#3
ron mattson Member Join Date: Nov 2005 Location: cloquet mn Posts: 462 Likes: 17 Liked 65 Times in 28 Posts	Re: Oil pump pickup - tack weld or don't weld Just make a sheetmetal tab to weld on the pickup tube that has a 1/4 inch hole in it to go to one of the bolts that hold on the pumps bottom plate and bolt it there. __________________ Ron Mattson 5015 STK

02-06-2012, 05:58 PM	#4
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 691 Likes: 188 Liked 87 Times in 48 Posts	Re: Oil pump pickup - tack weld or don't weld It has a strap built on, but I think the pickup could still rotate down a little. Im thinking the previous Milodon pickup rotated down, contacted the pan, and then the vibration/contact broke it off. This is the "extreme duty" pickup that was recommended: http://www.jegs.com/i/Milodon/697/18316/10001/-1 I had a 18314 on prior. Identical except for the gussett that they added.

02-06-2012, 06:03 PM	#5
ron mattson Member Join Date: Nov 2005 Location: cloquet mn Posts: 462 Likes: 17 Liked 65 Times in 28 Posts	Re: Oil pump pickup - tack weld or don't weld That pickup has the strap i was talking about right on it, if your having issues with it still rotating i would put a little Permatex sleeve retaining compound on before putting the pickup into the pump, between that and the strap it will not move. __________________ Ron Mattson 5015 STK

02-06-2012, 06:28 PM	#6
Glenn Briglio VIP Member Join Date: Nov 2002 Location: Massapequa Park,NY Posts: 1,273 Likes: 1,882 Liked 954 Times in 301 Posts	Re: Oil pump pickup - tack weld or don't weld Full weld it and forget it if it has bracket bolted to pump.

02-07-2012, 12:16 AM	#7
Lew Silverman VIP Member Join Date: Mar 2010 Location: Newport News, VA Posts: 1,435 Likes: 371 Liked 129 Times in 59 Posts	Re: Oil pump pickup - tack weld or don't weld The only difference between the 18314 and the 18316 is a brace welded on the pick-up itself to strengthen where it welds to the pick-up tube. This is extra insurance to keep the pick-up from separating from the tube. The special CNC-bung is specifically designed to be a snug press fit into the oil pump and with the attached brace bolted to the pump cover, and the Permatex locking compound Ron mentioned, welding shouldn't be necessary. Lew __________________ Lew Silverman #2070 "The Wagon Master" N/SA

02-07-2012, 02:55 AM	#8
MAURICE BLENDHEIM Senior Member Join Date: Jun 2011 Location: Langley (no igloos), British Columbia, Canada Posts: 565 Likes: 305 Liked 264 Times in 85 Posts	Re: Oil pump pickup - tack weld or don't weld Clark... Over the years I've seen this with that brand of oil pick up. What I would recommend the next time you freshen your engine check out the Moroso pump-pick up package, this combination comes fully tig welded and includes a new pump drive shaft. Most aftermarket oil pans have comparable depths, Moroso has several different configurations that work without doubt.

02-07-2012, 09:08 AM	#9
cad Senior Member Join Date: Apr 2009 Location: Omaha, NE Posts: 691 Likes: 188 Liked 87 Times in 48 Posts	Re: Oil pump pickup - tack weld or don't weld Thank you for your responses. I tacked it and we should be good2go. I've looked at the other pumps and pickups. Nice pieces. Clark

02-07-2012, 10:57 AM	#10
63corvette Senior Member Join Date: Mar 2007 Location: Canyon, Tx Posts: 551 Likes: 127 Liked 353 Times in 102 Posts	Re: Oil pump pickup - tack weld or don't weld I have been at this for 40 plus years and I can tell you I have had the spot welds brake and the tube come out. I have had pumps with brackets on them bolted to the pump and I would spot weld them and the bracket would break at various points and the spot weld break also and the tube fall out. The only true way to make sure the tube never comes out is to weld it fully all the way around the tube. I have used brass and tig to full weld it and can say one is just as good as the other. They both worked for me. The full round weld is the ONLY way to make sure you never have the tube coming out. My 2 Cents Rick Cates