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-   -   best tubing to use for vacumn/boost lines? (http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/400582-best-tubing-use-vacumn-boost-lines.html)

raceman 03-27-2008 10:42 AM

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..

930gt-40r 03-27-2008 07:44 PM

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.

raceman 03-27-2008 09:30 PM

the braided line seems like a really good move

jbrinkley 03-28-2008 04:56 AM

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

raceman 03-28-2008 11:13 AM

thsnks Jerry. Man your car looks incredible,almost exact spec as mine on the turbo system too.Why sell it?

Ag02M5 03-28-2008 11:18 AM

http://www.germansupply.com/home/customer/product.php?productid=16341&cat=&page=1

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

RT

jbrinkley 03-28-2008 11:51 AM

Why sell it?

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

BoxxerSix 03-28-2008 01:47 PM

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.

raceman 03-30-2008 09:45 AM

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.

David 03-30-2008 10:12 AM

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.

JFairman 03-30-2008 12:07 PM

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.

WERK I 03-30-2008 01:15 PM

Quote:

Originally Posted by JFairman (Post 3858382)
Fuel line works fine, and it's cheap.

+1


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