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Re: A engine oil pumps
[Re: Gavin]
#189372
01/10/09 07:36 PM
01/10/09 07:36 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
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moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Quote:
Gavin, I leave the pump & end of pickup at 3/8" NPT but drill out the end of the pickups to .500" where they are welded to a more solid chunk of threaded round stock to thread into the pump. Takes a whole 30 seconds in the vice with a .500" drill bit do do something Milodon & Moroso should be doing....
Sorry Ryan, bear with me, I must be a bit slow today  .....you don't touch the 3/8" hole in the pump, but you mention both leaving the end of pickup at 3/8 and also drilling out the end of the pickup to 1/2, and welding the new stock which threads to the (3/8) pump. Could you run that past me again.........thanks!
You're making it way too complicated..... take the Milodon or Moroso pickup & just run a .500" drill into the end of it where it threads into the pump. They're like .420" from moroso/milodon. That's it.... there's no wleding or tapping etc. You don't need 1/2" NPT inlet into your pump or pickup. A 3/8" NPT hole is larger than .500".....
I dunno why you guys are having pump/pan issues, obviously something is different between what you're using & what I'm using. Without having ever seen one in my hands that hit I can't really say what the deal is. All I can tell you is I've never had one hit which is odd seeing as how multiple people on here have had clearance issues, dunno. 
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Re: A engine oil pumps
[Re: Neil]
#189373
01/10/09 07:36 PM
01/10/09 07:36 PM
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Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61
I Live Here
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I Live Here
Joined: Oct 2003
Posts: 11,684
W. Kentucky
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Maybe there are manfacturing differences . This pan fit like profanity reference deleted, the bolt holes had to be elongated on both sides, it's like the pan is out of square  . If I ever buils another I'll use someone elses pan for sure.
Last edited by ZIPPY; 01/11/09 10:06 AM.
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Re: A engine oil pumps
[Re: aarcuda]
#189375
01/10/09 10:02 PM
01/10/09 10:02 PM
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Joined: Aug 2008
Posts: 189
long island new york
kingdust
member
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member
Joined: Aug 2008
Posts: 189
long island new york
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i never had oil pump to pan clearance issues, ive built more than a few 340s ( not as much as ryan)but i did have a milodon pan that the bolt holes were'nt even close to lining up! sent it back to jegs and they sent me another one and that one worked. nothings ever perfect.
LIFE IS A LESSON,YOU LEARN IT WHEN YOUR THROUGH!
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Re: A engine oil pumps
[Re: justinp61]
#189382
01/11/09 12:07 PM
01/11/09 12:07 PM
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Joined: Nov 2008
Posts: 660
San Diego
formula S
mopar
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mopar
Joined: Nov 2008
Posts: 660
San Diego
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Quote:
Pump #2.
I built a 360 over the summer and used a m72hv, and a stock pan that I got from mancini. No problems with fit, with that said the pump cover was cast differently, the screw pads on the pump cover were recessed. As far as oil pump and pickup modification on race engines, I disassemble the pump, drill the pickup out to 3/4", port and blend both suction and discharge sides of the pump. Then I use 3/4" O/D x.090 tubing to fab a pickup, then slide the pickup into the pump at least an inch, and braze it together this work really well. 
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Re: A engine oil pumps
[Re: formula S]
#189384
01/11/09 04:16 PM
01/11/09 04:16 PM
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Joined: Aug 2004
Posts: 3,333
MARYLAND
69Cuda340S
master
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master
Joined: Aug 2004
Posts: 3,333
MARYLAND
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Quote:
the pump cover was cast differently, the screw pads on the pump cover were recessed.
Here is what the top of my Mellings HV pump looks like. Bought last summer:
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Re: A engine oil pumps
[Re: 69Cuda340S]
#189385
01/11/09 04:47 PM
01/11/09 04:47 PM
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Joined: Mar 2003
Posts: 15,489
the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,489
the boonies
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Quote:
Quote:
the pump cover was cast differently, the screw pads on the pump cover were recessed.
Here is what the top of my Mellings HV pump looks like. Bought last summer:
ahaa!! Those bolts are countersunk A LOT. thats why some people arent having troubles with their (I bet).
The oil pump that caused me problems had a completely flat plate and that caused the hex heads to sit lower in the motor. I bet i wouldnt have had much (if any) problem with the pump in that picture. the one i had most trouble with look like :
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