How do parts suddenly not fit?
#3229250
04/26/24 02:52 AM
04/26/24 02:52 AM
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Joined: Jan 2003
Posts: 9,999 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,999
Frostbitefalls MN (Rocky&Bullw...
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Milodon hi volume pump, BMP aluminum block. I assembled it last summer, dyno'd it, then put some runs on it. I hurt some bearings and scratched the crank, so i took it apart, put in new bearings. I went to prime the oil system and found a half quart of oil under the car. The pump was removed to clean the block, but was reinstalled with the same gasket type. Now it leaks! Not just a little, i had at least a quart pour out as i primed the motor. I tried a new gasket. Same BIG leak! Then i spotted it. A little dent on the pump body, and no day light between the block pump surface and a bolt boss on the side of the pump that was against the block. A little grinding, same gasket, no leak! I am totally baffled on why that interferance didn't cause a leak before.
Last edited by gregsdart; 04/26/24 02:56 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: How do parts suddenly not fit?
[Re: usp4u]
#3229265
04/26/24 08:29 AM
04/26/24 08:29 AM
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Joined: Aug 2003
Posts: 4,980 new jersey usa
11secdart
master
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master
Joined: Aug 2003
Posts: 4,980
new jersey usa
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Yep !!! I ran Tubular Automotive headers on my small block Dart for years , first a used set then a brand new set.. after they wore out two years ago I ordered a brand new set after waiting awhile because of " supply chain " problems , I had them coated and tried to put them in the car and they fit poorly , part of the steering was hitting them as well hanging way to low with hardly any ground clearance and I had a hard time slipping the collector on. I spoke to them and they didn't understand either as they knew my application and that I had used them before . They wanted my to bring the car to their shop in Mass. to try and figure out the problem but I ended up selling the headers after they repaired a tube that was damaged by the steering.
Last edited by 11secdart; 04/26/24 08:35 AM.
68 Dart 410 / 904 92 D150 original owner 21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4 23 Audi Q5 16 Honda HRV
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Re: How do parts suddenly not fit?
[Re: 11secdart]
#3229274
04/26/24 09:19 AM
04/26/24 09:19 AM
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Joined: Mar 2003
Posts: 2,504 PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,504
PA
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Wow, that definitely shows signs of interference.
Not a Milodon oil pump fan myself.
Melling HV pump with the Milodon plate is all I have ever used.
Last edited by moparacer; 04/26/24 09:20 AM.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: How do parts suddenly not fit?
[Re: PLUM BAD]
#3229684
04/28/24 10:38 AM
04/28/24 10:38 AM
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Joined: Jun 2003
Posts: 2,411 Weatherford, Texas
RapidusMaximus
top fuel
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top fuel
Joined: Jun 2003
Posts: 2,411
Weatherford, Texas
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Not just a Mopar issue I race and pit with 2 Chevy guys one runs an LS and the other a traditional small block…their stuff doesn’t fit either, seems like almost everything requires some sort of “adjustment” to fit properly…
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: How do parts suddenly not fit?
[Re: moparx]
#3230587
05/02/24 08:04 AM
05/02/24 08:04 AM
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Joined: Jan 2003
Posts: 9,999 Frostbitefalls MN (Rocky&Bullw...
gregsdart
OP
master
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OP
master
Joined: Jan 2003
Posts: 9,999
Frostbitefalls MN (Rocky&Bullw...
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One more issue🫣 the oil pump driveshaft got bent in the process. Had this thing leaked and shown me the interferance before i ran it the first time, that $220 part would not have gotten bent. Again, like i stated in the first post, it sealed and didn't leak last year when i first ran it! Luckily my friend Leigh was watching when i fired up the motor yesterday, and saw the distributor housing ocilating. It was moving about 1/16 inch every revolution. We figured it out when i put the older, worn pump driveshaft back in, and the wobble went away. I spun the bad shaft in a drill, and sure enough, it was bent at the hex drive .
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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