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'65 oil pressure line - Plastic? Bubba been here?

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Old 08-31-2018, 08:21 PM
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Sullyvette
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Default '65 oil pressure line - Plastic? Bubba been here?

Ok, I peeked under the dash and found a plastic oil pressure line. The line actually had bubbles or air pockets in the line. I purchased an copper oil line from a vendo


r and I'm going to replace it. How do I attach the copper tubing to the brass fittings? Do I use teflon tape? Any suggestions please. Thanks , Sully
Old 08-31-2018, 08:48 PM
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Powershift
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Original line is copper coated STEEL. You do not want regular copper.

Larry
Old 08-31-2018, 08:59 PM
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Originally Posted by Powershift
Original line is copper coated STEEL. You do not want regular copper.

Larry
This is what I understand as well.

It just looks like a copper line.
Old 08-31-2018, 09:16 PM
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Ausbrian
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You need to use a compression fitting with sleeve and nut to seal the copper line.Use the Teflon on the block fitting.
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Old 08-31-2018, 09:21 PM
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buns
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Much good info here:


https://web.archive.org/web/20150912...e_Fittings.pdf
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Old 08-31-2018, 10:31 PM
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Why would Mid America sell a copper only line? What gives? Sully
Old 08-31-2018, 11:05 PM
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My 65 has plastic, no telling how long it’s been on there. I remember using it on other cars as well without a problem. I would think it would withstand vibration better than steel! Why not plastic?
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Old 08-31-2018, 11:30 PM
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Because plastic is petroleum based and hot oil and plastic aren’t a good combo...That’s one of the first things I replaced when I stole my ‘66 from my father.

I had visions of 10W/30 filling my drivers side footwell...
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Old 08-31-2018, 11:53 PM
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Mid America is a good place to buy hats and tee shirts.

Corvette Central has the correct line.


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Old 09-01-2018, 06:37 AM
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For a mere 5$ I'll send the copper one back and get the "correct" one. Why do it twice! Thx, Sully
Old 09-01-2018, 06:46 AM
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Most of Autometers kits are copper nothing wrong with it, no teflon needed.
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Old 09-01-2018, 07:33 AM
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Back in the 60's and 70's if you bought an oil gauge to add to a car that just had a light most came with a plastic hose. Never had any problems with them unless you kinked the hose or let it rest against something that would rub a hole in it.
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Old 09-01-2018, 07:57 AM
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Originally Posted by USMC 0802
Because plastic is petroleum based and hot oil and plastic aren’t a good combo...That’s one of the first things I replaced when I stole my ‘66 from my father.

I had visions of 10W/30 filling my drivers side footwell...
That's exactly what happened to my 67 Corvette . Someone had installed a plastic oil line and it burst where the compression fitting had compressed it , flooding the new carpet on the passenger side . Luckily my wife saw it before it did any engine damage .

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Old 09-01-2018, 12:30 PM
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Originally Posted by bj1k
That's exactly what happened to my 67 Corvette . Someone had installed a plastic oil line and it burst where the compression fitting had compressed it , flooding the new carpet on the passenger side . Luckily my wife saw it before it did any engine damage .

There is plastic and then there is PLASTIC.................Some plastic tubing was polyethylene and other plastic tubing was nylon. I used the nylon, and it held up well in my older (non-Corvette) cars. But using the polyethylene was not the best idea.

Larry
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Old 09-01-2018, 12:41 PM
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Originally Posted by Powershift
There is plastic and then there is PLASTIC.................Some plastic tubing was polyethylene and other plastic tubing was nylon. I used the nylon, and it held up well in my older (non-Corvette) cars. But using the polyethylene was not the best idea.

Larry
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Old 09-01-2018, 01:47 PM
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I drove a 58 Biscayne when in college that had a ticking noise coming from the dash. Drove me crazy, finally narrowed down to the oil pressure gauge. The metal line was transmitting engine noise, oil pump maybe, to the dash. I replaced it with nylon. Not that I would ever recommend that.
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Old 09-01-2018, 03:38 PM
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Try Corvette Central they have oil gauge mechanical to electronic conversion service. Solves the above mentioned problems.
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Old 09-01-2018, 03:44 PM
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I've used the nylon that comes with new gauges for years.....never had a problem. But copper looks more authentic on an old car.
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Old 09-01-2018, 07:59 PM
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Originally Posted by Powershift
There is plastic and then there is PLASTIC.................Some plastic tubing was polyethylene and other plastic tubing was nylon. I used the nylon, and it held up well in my older (non-Corvette) cars. But using the polyethylene was not the best idea.

Larry
I guess I need to clarify .I call it plastic but it actually was the regular automotive oil line nylon that broke . It will break at the compression fitting if you tighten it too much which was obviously what happened . Why would anyone even attempt to use hardware plastic tubing for that purpose ?

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Old 09-01-2018, 09:04 PM
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Originally Posted by bj1k
I guess I need to clarify .I call it plastic but it actually was the regular automotive oil line nylon that broke . It will break at the compression fitting if you tighten it too much which was obviously what happened . Why would anyone even attempt to use hardware plastic tubing for that purpose ?
There are many BUBBAs working on these cars. Check the archives if in doubt.

Larry
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