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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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 Posted: Tue Jul 27, 2021 2:33 pm Post subject: Re: Oil pressure switch woes |
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Yes, the original sender is tapered.
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sb001
Samba Member
Joined: May 19, 2011
Posts: 10406
Location: NW Arkansas
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| Posted: Tue Jul 27, 2021 2:40 pm Post subject: Re: Oil pressure switch woes |
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Looking closely at the oil pressure switch that aircooled.net sells, it appears the threads on theirs are tapered, to match the insert they sell. Can't tell for 100% sure though.
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I'm the humblest guy on this board.
1969 autostick sedan, family owned since new
1600 SP engine
Solex 30 PICT 3 carburetor
Bosch 113905205AE autostick distributor |
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sb001
Samba Member
Joined: May 19, 2011
Posts: 10406
Location: NW Arkansas
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| Posted: Tue Jul 27, 2021 5:44 pm Post subject: Re: Oil pressure switch woes |
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Uh oh...
OK , I know everyone will get all wide-eyed when they see I threaded an ENGINE MOUNT BOLT into the oil pressure switch hole to plug it so I could get it home (luckily literally right around the corner.)
This is because nothing smaller would lock into the threads still inside the case, I guess that's how wallowed out it got.
Believe it or not this actually worked, but unfortunately, after I got it back home and began inspecting that area, I discovered what appear to be cracks in the case:
 
I don't suppose these are just casting marks or something...
_________________
I'm the humblest guy on this board.
1969 autostick sedan, family owned since new
1600 SP engine
Solex 30 PICT 3 carburetor
Bosch 113905205AE autostick distributor |
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raydog
Samba Member
Joined: February 09, 2006
Posts: 1163
Location: Cape Cod
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| Posted: Wed Jul 28, 2021 5:01 am Post subject: Re: Oil pressure switch woes |
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I would say to the right of the hole looks like casting marks. However, there seems to be a red line of something closest to the threads. Could that be red RTV inside of a crack? Very hard to tell. Did you use red RTV at some point?
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Come on, It's not rocket science. KISS |
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sb001
Samba Member
Joined: May 19, 2011
Posts: 10406
Location: NW Arkansas
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| Posted: Wed Jul 28, 2021 5:25 am Post subject: Re: Oil pressure switch woes |
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| raydog wrote: |
| I would say to the right of the hole looks like casting marks. However, there seems to be a red line of something closest to the threads. Could that be red RTV inside of a crack? Very hard to tell. Did you use red RTV at some point? |
I see that too, and the only thing I can think of is that it's some kind of red thread sealant that was on the new switch when I tried threading it in & got lodged in there.
_________________
I'm the humblest guy on this board.
1969 autostick sedan, family owned since new
1600 SP engine
Solex 30 PICT 3 carburetor
Bosch 113905205AE autostick distributor |
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Volks Wagen
Samba Member
Joined: February 13, 2013
Posts: 2926
Location: Germany
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| Posted: Wed Jul 28, 2021 1:54 pm Post subject: Re: Oil pressure switch woes |
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| sb001 wrote: |
| raydog wrote: |
| I would say to the right of the hole looks like casting marks. However, there seems to be a red line of something closest to the threads. Could that be red RTV inside of a crack? Very hard to tell. Did you use red RTV at some point? |
I see that too, and the only thing I can think of is that it's some kind of red thread sealant that was on the new switch when I tried threading it in & got lodged in there. |
I'd say you'll be alright, but from now on I'd just hand tighten whatever you put in there and maybe a bit of jbweld in the crack. There is the possibility of closing that hole up fully and tapping the oil gallery at the end putting some adapter in and then the oil pressure switch into the adapter...
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1973 1303 with AB-motor - sporadic
reconstruction as time permits, 1986 ex-Bundeswehr Doka - on the road again.
I'm definitely, probably, the worlds greatest lover.
Aithníonn ciaróg ciaróg eile. |
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Starbucket
Samba Member
Joined: April 30, 2007
Posts: 4025
Location: WA
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| Posted: Wed Jul 28, 2021 3:27 pm Post subject: Re: Oil pressure switch woes |
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| If it didn't spray or drip oil on the drive home then what ever they are won't matter. |
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FreeBug
Samba Member
Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Wed Jul 28, 2021 3:48 pm Post subject: Re: Oil pressure switch woes |
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| Clean it with bake cleaner, let it dry, an heat the area with a propane torch/oxy-fuel, whatever you have (a heat gun might work?). You will see the crack with seepage, if it's there. |
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