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best tubing to use for vacumn/boost lines?

l`ve been tweaking things on my turbo system and l`m not happy with the combination of tubings l`ve used to plumb my wastegate,blow-off valve and FMU,etc. l found that motorcycle fuel line looks good and seems to be resistant to expansion so l have tried that. The best thing l think l`ve found is Japanese car rubber vacumn line with the colored braiding on the outside. l`ve had to scrounge this from the autowrecker and to do it right l need more of it. l guess l`m concerned about heat and what it does to the signals with silicon lines so l don`t use any silicon. My latest purchase is what appears to be PVC tubing and if l can secure/seal the ends l think it won`t expand at all. Anyone have any input on all this? what`s everyone else using? line expansion may be something not worth worrying about..
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Last edited by raceman; 03-27-2008 at 10:45 AM.. Reason: edit
Old 03-27-2008, 10:42 AM
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I use a combination of -4 AN lines and silicon lines. I use the silicon for the Fuel pressure regulator and the map sensor. For the wastegate and blow off I use -4 an stainless braided line.
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Old 03-27-2008, 07:44 PM
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the braided line seems like a really good move
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Old 03-27-2008, 09:30 PM
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I used -6 ss braided line and AN fittings for the WG.

I went with 6 because I had that left over from doing the fuel lines
Old 03-28-2008, 04:56 AM
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thsnks Jerry. Man your car looks incredible,almost exact spec as mine on the turbo system too.Why sell it?
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Old 03-28-2008, 11:13 AM
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Send a message via AIM to Ag02M5
http://www.germansupply.com/home/customer/product.php?productid=16341&cat=&page=1

I ordered this. Looks as good or better than stock.

RT
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Old 03-28-2008, 11:18 AM
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Why sell it?

good question, I'm insane and have a serious car problem
edit,,, serious addiction issues

Last edited by jbrinkley; 03-28-2008 at 11:54 AM..
Old 03-28-2008, 11:51 AM
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Any hardcore race build I do here I use braided lines and AN fittings. If weight is a huge deal, or the build is a moderate to aggressive street build I like using double ply braided EFI fuel line. Very similar to line like Aeroquip uses for the push lock fittings(just a lot cheaper by the foot) and is quite acceptable in terms of durability and looks.
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Old 03-28-2008, 01:47 PM
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thanks guys,all good ideas. Since l`m out in the high desert country it`s all mail order,no hose/fittings stores around so research is everything.
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Old 03-30-2008, 09:45 AM
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I used silicone vacuum hose, the stuff that's red or blue. It looks nice, but it splits too easily when taking it on and off so I don't recommend it.
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Old 03-30-2008, 10:12 AM
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Fuel line works fine, and it's cheap.

The best would be what you find in an aircraft or race car... $$ Aeroquip stainless braided for pressure, heat, oil/gas tolerance, and abrasion resistance.
Kevlar braided is even more expensive.
Old 03-30-2008, 12:07 PM
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Quote:
Originally Posted by JFairman View Post
Fuel line works fine, and it's cheap.
+1
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Old 03-30-2008, 01:15 PM
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