Author Topic: oil pressure line  (Read 7363 times)

Ron C.

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oil pressure line
« on: May 11, 2007, 09:21:28 PM »
was the oil pressure line clear plastic or black? I found out that a grommet is on the firewall and not a fitting,so I need to replace the line and add the grommet.
67Z/28,67RSZ/28,71SS454CHEVELLE.

1968RSZ28

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Re: oil pressure line
« Reply #1 on: May 11, 2007, 10:14:03 PM »
Black

sd1968z28

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Re: oil pressure line
« Reply #2 on: May 11, 2007, 10:41:18 PM »
black cheese plastic, do your self a favor and bend a copper one and paint it black no one will know and it will no go bad.  the after market line is not so good!

GaryL

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Re: oil pressure line
« Reply #3 on: May 11, 2007, 10:55:26 PM »
was the oil pressure line clear plastic or black? I found out that a grommet is on the firewall and not a fitting,so I need to replace the line and add the grommet.

I don't thnink the grommet is available. I had to use a 1" x say 5/16" with a 1/8" hole and glue the small one inside the large one. Could not find a 1" with a 1/8" hole.
Gary

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zdld17

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Re: oil pressure line
« Reply #4 on: May 11, 2007, 11:01:55 PM »
Better yet,  do use the 1/8" copper tubing as mentioned above,  with compression fittings,  use a long enuff piece of tubing and make a one or two double loop  at the fire wall before going into interior to gauge and get enuff black  1/8 or 3/32 rubber vacumn hose to slip over the entire length of tubing to the grommet.     The loop will absorbe vibration that could cause a break in copper and rubber hose will protect and color tubing black.  Make sense?   Works for me and I didn't stay at the Holiday Inn.

As for he rubber grommet issue,  the Trifive chevy applications have such a grommet for wiper motor cable or you can go to Lowes and look thru their rubber or plastic blank plugs and fit as needed.   
« Last Edit: May 11, 2007, 11:04:27 PM by zdld17 »
Don Dabbs

68Zproject

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Re: oil pressure line
« Reply #5 on: May 11, 2007, 11:39:14 PM »
My 68 AIM shows the hole to be 1/2" dia. I just went to a hardware store and found a grommet to fit.
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GaryL

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Re: oil pressure line
« Reply #6 on: May 12, 2007, 04:09:35 AM »
My 68 AIM shows the hole to be 1/2" dia. I just went to a hardware store and found a grommet to fit.
You are right. The hole is actually 1/2". I could not find a 1/2"x1/8" grommet.

JohnZ

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Re: oil pressure line
« Reply #7 on: May 12, 2007, 02:33:44 PM »
Copper tubing isn't a great idea for an oil pressure line - copper work-hardens with movement and vibration and fractures/cracks. Metal oil pressure lines on GM cars after about 1960 were copper-plated steel or plain steel, then changed to nylon.
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68Zproject

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Re: oil pressure line
« Reply #8 on: May 12, 2007, 03:29:05 PM »
I guess everyone's stores are different, but I went to a True Value and they have the drawers with the parts in there.  Must have had 50 different sizes.  I haven't had much luck with Lowes or Home Depot type places. I could even throw one in an envelope if you like.
« Last Edit: May 12, 2007, 08:57:39 PM by 68Zproject »

Ron C.

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Re: oil pressure line
« Reply #9 on: May 12, 2007, 10:49:46 PM »
Thanks everyone, I found a black plastic oil line kit and it is in and looks fine. I just didnt know if they used clear or black line. ;D

zdld17

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Re: oil pressure line
« Reply #10 on: May 12, 2007, 11:17:50 PM »
Well, to each his own,, I would rather have a copper line instead of plasic, in event of a small fire in that area. 

Ron C.

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Re: oil pressure line
« Reply #11 on: May 12, 2007, 11:31:41 PM »
here is a pic of the oil line i did.

KurtS

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Re: oil pressure line
« Reply #12 on: May 16, 2007, 04:17:17 AM »
Let's see.
One of our test vehicles burnt to the ground with a copper line for a fuel pressure guage that work hardened and broke. The fire got hot enough that it melted the wheels off the car....

And I had a test vehicle that I was driving and the oil pressure line work hardened and broke. It poured out a lot of smoke, but I got lucky and it didn't catch fire and I didn't ruin the motor (special cam / lifter test vehicle no less).

A copper line is a bad idea.....
Kurt S
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RamAirDave

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Re: oil pressure line
« Reply #13 on: May 16, 2007, 05:12:36 AM »
Also to note, the run-of-the-mill compression fitting on the black plastic line wont seal the factory style sending unit and gauge.

Just for reference, this is the firewall grommet, which I don't believe is repo'd yet:







Within the last week, I came across a grommet that "appeared" to be the same on another 69, but with a different use (warning light car).  I really cant think of where it was right now, and I didnt check to see if it is the same dimensions or not.
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68Zproject

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Re: oil pressure line
« Reply #14 on: May 16, 2007, 05:39:42 AM »
RAD, does the 2nd picture face out?  Is that what you would see looking at the firewall, or the cone shaped end?