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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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 Posted: Wed Jan 17, 2024 6:15 am Post subject: Strange ugly hole in Oil Pump casting...normal? |
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Hi folks - simple question really.. is this normal??
on removing the oil pressure relief valve the casting between the channel the valve sits in and the oil channel is a mess, is this just manufacturing or has something happened to cause this, if so i just cant imagine what?
 by Martin Kolarides, on Flickr |
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Cedric
Joined: 27 Aug 2004
Posts: 2610
Location: Sweden
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| Posted: Wed Jan 17, 2024 6:27 am Post subject: |
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Mine did not look like that, not what i can remember. Whatever you do buy a new spring, my relief valve had lost a bit of tension when i compared it to a new one, its super cheap aswell.
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1980 924 Turbo
www.instagram.com/garagecedric/ |
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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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| Posted: Wed Jan 17, 2024 6:29 am Post subject: |
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| Cedric wrote: | | Mine did not look like that, not what i can remember. Whatever you do buy a new spring, my relief valve had lost a bit of tension when i compared it to a new one, its super cheap aswell. |
thanks for the tip , ill do that...i just cant imagine how it would get that way if it wasnt like that from the factory, do you think its an issue? |
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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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| Posted: Thu Jan 18, 2024 7:31 am Post subject: |
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anyone else had any experience with this??
concerned about fitting this back on the car if its a problem.. |
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924RACR
Joined: 29 Jul 2001
Posts: 8810
Location: Royal Oak, MI, USA
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| Posted: Thu Jan 18, 2024 8:59 am Post subject: |
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I don't remember this exactly, but it doesn't seem right to me... would want a solid confirmation on that... seems very very strange to have that kind of surface without error...
Maybe when I get back home end of the week I can peek at a spare, see what that looks like...
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Vaughan Scott
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'79 924 #77 SCCA H Prod racecar
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Mclaren924
Joined: 13 Oct 2021
Posts: 171
Location: California
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| Posted: Thu Jan 18, 2024 5:43 pm Post subject: |
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+1 to wtf is that lol, don't recall any of the mine looking like that and I feel like I would remember something such as that.
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1980 931 "Salt" Bucket wannabe racer (not started)
1979 924 "Pepper" Restoration (almost done)
1980 924 "Donnie" (Parts car)-DEAD
1977 924 Slicktop "Pennie" Bucket turned Silver Spoon |
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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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| Posted: Thu Jan 18, 2024 9:26 pm Post subject: |
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| Mclaren924 wrote: | | +1 to wtf is that lol, don't recall any of the mine looking like that and I feel like I would remember something such as that. |
its weird isnt it!! i cant work it out.. im assuming for the correct operation of the pump there needs to be a opening there..but why so crude?
im rebuilding the engine as we speak but as yet havent found any nasty metal filings anywhere.. |
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morghen
Joined: 21 Jan 2005
Posts: 8883
Location: Romania
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| Posted: Thu Jan 18, 2024 11:24 pm Post subject: |
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Probably a quality issue with one of the drilling operations.
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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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| Posted: Fri Jan 19, 2024 7:02 pm Post subject: |
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| thanks guys, i think the impression im gettign from here and also the facebook group is that its prob not actually an issue and as long as the passageway is there to allow oil to move freely then it can go back on the car...i think i'll just tidy it up with the dremel and carry on with the rebuild. |
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924RACR
Joined: 29 Jul 2001
Posts: 8810
Location: Royal Oak, MI, USA
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| Posted: Sat Jan 20, 2024 11:41 pm Post subject: |
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I hope to be able to grab a spare pump today and look at it for you...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
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924RACR
Joined: 29 Jul 2001
Posts: 8810
Location: Royal Oak, MI, USA
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| Posted: Sun Jan 21, 2024 11:33 pm Post subject: |
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Sorry, didn't manage to put hands on one yesterday; juggling things in a storage unit and it was very cold, only 15F... will be back today, try again, will warm up a bit more into the 20s... and I'll be piling on another layer!
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Vaughan Scott
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Cedric
Joined: 27 Aug 2004
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Location: Sweden
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924RACR
Joined: 29 Jul 2001
Posts: 8810
Location: Royal Oak, MI, USA
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| Posted: Mon Jan 22, 2024 10:40 pm Post subject: |
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Apologies, but I am just unable to get to my spares now.
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Vaughan Scott
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'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Mkol
Joined: 04 Aug 2023
Posts: 30
Location: uk
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| Posted: Thu Jan 25, 2024 6:34 am Post subject: |
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thanks for this, that helpful...i think mine isnt too bad and im leaning towards just assuming its a manufacturing issue, ive cleaned it up today with the dremel and the pressure valve seats fine ill just keep an eye on it  |
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