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  #1  
Old 10-14-2011, 06:46 AM
Randall Barringer's Avatar
Randall Barringer Randall Barringer is offline
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Default Nylon vs Copper for Mechanical Oil Pressure Gauge

I am going to install a mechanical oil pressure gauge and would like to know what everyone thinks about nylon vs copper tubing.
I think I'm going to go with copper tubing, but would like some opinions on what is best.
Nylon tubing sure is easier, but is prone to heat.

thoughts......
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Old 10-14-2011, 07:24 AM
Mark Aycock Mark Aycock is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

I had an interesting engine fire from using nylon. USE COPPER !
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Old 10-14-2011, 07:27 AM
Super Scout Super Scout is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

I know a lot of drag strips will not let you run if you have nylon line. I know your not racing but non the less copper is better.
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Old 10-14-2011, 07:28 AM
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Tim Potter Tim Potter is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Yep nylon doesn't like heat. It must be kept away from exhaust. If you go with copper make sure to put a coil in it so that it has the ability to stretch as the engine moves. I just wrapped mine around a 3/4 wooden dowel a few times starting about 6" from the galley fitting
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Old 10-14-2011, 07:55 AM
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ihscoutlover ihscoutlover is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Copper. I bought a gauge to read the pressure correctly after we toasted the upper half of the engine in Melissa's Traveler bringing it home from WA. After being a little inept with IH's at that point(or at least that one), I bought the gauge. It comes with the nylon tubing, but I went ahead and got a spool of the copper and I am glad I did. Not only is the nylon subjective to heat damage, over time hot & cold will also play a part in how it "degrades". Even though it doesn't hold a whole lot of pressure, its similar to your brake lines, those aren't nylon are they?? We have had that setup for the last 7 years and I constantly check it for leaks/problems and so far its holding up well.

Jeff
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Old 10-14-2011, 08:06 AM
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fredsterra fredsterra is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Copper is best. But I have nearly always used 1/8" Nylon air line. And used 1/4" over the 1/8" to inulate from rubbing on anything.

I keep telling myself one of these days I am going to change the line on my Scout to copper or teflon braided hose. But I also have an oil pressure switch for my fuel pump. So if I were to loose oil pressure it would cut off the pump. I hope before any major damage.

I don't use the clear cheap hose they send in the kits. It is nylon air brake tubing. It can handle the warm oil pressure and the heat. (As long as you tie it away from the manifold!)
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Old 10-14-2011, 08:13 AM
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Dennis Bernth Dennis Bernth is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

If you go to someplace like Summit or Jeg's you can get braided stainless hose for mechanical oil pressure gauges. They're not cheap, but they should be pretty much a 'install and forget it' fix. Copper is OK, but as mentioned, you need to put coils in it ( I put coils on both sides of the firewall) to keep it from 'working' from vibration and cracking. This post has me wondering about the copper/nickel tubing I now use for brake line- it's a lot more 'bendable' than steel tube, but is DOT approved for brake pressures, never rusts, and it's way stronger than straight copper. Still would need the 'coil' in it, but it forms by hand so that's easy. I may have to investigate that for the 'new' Scout's mechanical gauge.
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Old 10-14-2011, 12:49 PM
TBAKPhi22 TBAKPhi22 is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Copper at a minimum, the braided is even better. I used the stupid nylon one once when I didn't have the copper yet. Got too close to the header and melted it. Luckily I caught it in time...
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Old 10-14-2011, 02:28 PM
ikavo ikavo is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Folks,

What kind of 'sender' and guage are you guys buying? Anyone have part numbers by any chance? I'd like to do this too.

Thanks!

Ikavo
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Old 10-14-2011, 02:36 PM
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Carl Wiese Carl Wiese is offline
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Default Re: Nylon vs Copper for Mechanical Oil Pressure Gauge

Quote:
Originally Posted by ikavo View Post
Folks,

What kind of 'sender' and guage are you guys buying? Anyone have part numbers by any chance? I'd like to do this too.

Thanks!

Ikavo
73 T-all 1010
392
727
The gauge doesn't have a sender, you use a fitting to connect it to the oiling system and oil pumps at pressure up the gauge via the line they are discussing and the gauge registers the pressure.
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