Re: Melling HV pump with Milodon cover TQ specs ?
[Re: Stanton]
#3184321
10/16/23 09:21 AM
10/16/23 09:21 AM
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Joined: Mar 2011
Posts: 3,076
Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,076
Michigan
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Here's my experience ...
ANY aluminum cover is going to bind with the "stock" torques specs. Not only have I used a couple different aluminum covers but will point out that virtually EVERY used cover you see at swap meets will show significant wear in the cover. This is despite them supposedly being "hard anodized".
What I've started doing is assembling them on a bench with plain nuts and bolts (grade 5). Start by measuring the depth of the pump body and the height of the rotor and stator - make sure there will be clearance once the cover is installed. You want some clearance but no more than .0015. The FSM gives the specs. Now start torqueing the bolts. At about 15 pounds check that the pump spins freely, If so, bump up the torque to 20 and check again. Do this till a) the pump binds or b) you get to 35 foot pounds.
I currently have one that binds at any more than 15 foot pounds ! The bolts are in with lots of red loctite !!
Good luck. Good info, nice approach. Question though. Did you ever use set up blue on the cover and pocket to see where the binding is?
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Re: Melling HV pump with Milodon cover TQ specs ?
[Re: Stanton]
#3184376
10/16/23 01:19 PM
10/16/23 01:19 PM
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Joined: Jan 2003
Posts: 2,917
A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,917
A shed in England
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Here's my experience ...
ANY aluminum cover is going to bind with the "stock" torques specs. Not only have I used a couple different aluminum covers but will point out that virtually EVERY used cover you see at swap meets will show significant wear in the cover. This is despite them supposedly being "hard anodized".
What I've started doing is assembling them on a bench with plain nuts and bolts (grade 5). Start by measuring the depth of the pump body and the height of the rotor and stator - make sure there will be clearance once the cover is installed. You want some clearance but no more than .0015. The FSM gives the specs. Now start torqueing the bolts. At about 15 pounds check that the pump spins freely, If so, bump up the torque to 20 and check again. Do this till a) the pump binds or b) you get to 35 foot pounds.
I currently have one that binds at any more than 15 foot pounds ! The bolts are in with lots of red loctite !!
Good luck. I have 2 engines using the full billet Milodon pumps, I'm pretty sure I torque them to less than 15 lb/ft, like you I keep checking the bind with a priming tool by hand 'till I feel it start to bind. IIRC it's around 12 lb/ft with lots of loctite. Luckily we've never had a problem with leaks or anything coming loose.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Melling HV pump with Milodon cover TQ specs ?
[Re: A727Tflite]
#3184391
10/16/23 02:59 PM
10/16/23 02:59 PM
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Joined: Oct 2005
Posts: 8,872
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,872
Ontario, Canada
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Question though. Did you ever use set up blue on the cover and pocket to see where the binding is? No I haven't . And I have trouble getting my head around the problem because those aluminum covers are significantly thicker than any stock cast iron piece. And it doesn't seem to matter - the old "cast" Milodon covers will bind and so do the new "billet" ones. I also have a cast piece from Muscle Motors - it binds and I have a billet cover from 440Source and it binds also. I'm stumped. Seems if you just blindly install an aluminum cover at stock torque you're asking for trouble.
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Re: Melling HV pump with Milodon cover TQ specs ?
[Re: Stanton]
#3184398
10/16/23 03:33 PM
10/16/23 03:33 PM
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Joined: Nov 2007
Posts: 277
MN
Willie68coronet
enthusiast
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enthusiast
Joined: Nov 2007
Posts: 277
MN
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When I put mine on. I noticed no intstructions. So I called Milodon and was told to "seat the bolt head flush with the pump cover. Then tighten it a /8th or a 1/4 of a turn, like a spark plug. I use blew locktite on the bolts and snug it about a 1/8 of a turn. Never a leak.
'68 Coronet 500 w/ Indy EZ-1 headed 446, 727 trans, 9" rear
First day at the track with SUV street tires and no traction: 1.688 60', 7.24 @ 101.79 in the 1/8 mile
Great customer service from: DominicThumper Carbs, B3 racing engines, Porter Racing Engines, A-1 torque converter's, Quick Performance, Racer Brown Cams, R&R Performance, Manton pushrods
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Re: Melling HV pump with Milodon cover TQ specs ?
[Re: gss]
#3184477
10/16/23 09:55 PM
10/16/23 09:55 PM
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Joined: Aug 2009
Posts: 2,042
Mooresburg, Tn
'72CudaRacer
top fuel
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top fuel
Joined: Aug 2009
Posts: 2,042
Mooresburg, Tn
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I haven't been able to find one of these covers. Does anyone know where to get them? Also, a photo would help me out a lot. Thanks Milodon #212225. see picture at Marsh Performance, Summit, Mancini, ect Without remote filter, pn#21205 Brian
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Re: Melling HV pump with Milodon cover TQ specs ?
[Re: '72CudaRacer]
#3184516
10/17/23 03:13 AM
10/17/23 03:13 AM
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Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
LAD 524
OP
mopar
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OP
mopar
Joined: Sep 2005
Posts: 620
Deep DEEP SOUTH
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Good info fellas thanks for sharing, much appreciated  Will be interesting to see where it binds when I mick it up. Im replacing the worn out Barton pump with a melling HV and the Milodon cover. When I pulled the old pump I found a freeze plug used to plug a hole in the pump mount face on the block. The other two holes were for the pump drive of course and the block oil feed from the pump. Any thoughts as to what the plugged hole was for ?  The block is an MP siamese bore 4.500" bore. 
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