Hello gents/ladies I am getting ready to do my single turbo conversion and i have a question about hooking up my aftermarket SS lines. I have researched and found many threads regarding the aftermarket fuel systems but none really answered my question. What is the best/easiest way to hook up SS lines to the stock lines/hardlines... is there a simple safe way to do it? let me know how all you did it!

Thanks

 

i am currently doing just this.

what i am doing is flaring my 5/16 stock lines to the 37* an flair and using tube nuts and sleeves in the -6 / 3/8s size. now i have cut a small piece of 3/8 tube and drilled it to slip over my stock hard line. so while the fitting mates with my 5/16 37* flair the 3/8 slipover tube acts to center the nut and sleeve.

lol i plan to take pics tonight

 

I cant wait to get my project going. Pic would be great.

Thanks

 

 

Is that a pretty snug fit?

 

Thanks for the pics. Good job.

 

yup very snug. when you snug the flare down on the fitting you can see it forms perfectly.

 

I was thinking about 5/16" stock hard line -> 3/8" fuel hose -> 3/8" barb w/male -6 an to my SS... is this possible or am i crazy?? I would rather have it your way but i don't have the confidence or tools etc.

 

You want a -5 to -6 adapter, then you just flair the stock like and put the -5 nut and sleeve on it.

 

Test for leaks

 

i never found anything in a -5

 

That's essentially what I am doing. I have an -6 lines running to the rising rpm oil block with barb fitting. From there, short 3/8" hose to the 5/16" hard line and fuel filter. I shouldn't have to worry about the engine lines leaking or dry rotting. I'll only have to look at those short hoses that are easy to get to and check. Easy enough.

 

XRP sells -5 tube nuts and sleeves and the union.

 

^This

XRP Part #
Nut 981805BB (Black)
Sleeve 981905BB (Black)

 

This is what you need.

 

Interesting to see these threads pop up...I've been researching this because I'll need to do the same and I'm planning on going with the tube nut/tube sleeve/-5 to -6 adapter... I just bought a 37* flaring kit to do this. Good info in this link ---> www.ka-t.org :: View topic - How to *properly* run AN fittings with stock fuel lines A little pricey but I think it's the right way of doing it.

I looked into the swagelok route and it seems like a good option but it doesn't come in AN male ends so you have to use NPT to AN adapter which means you need to use some sort of a thread sealant which I would rather not do.

 

Flaring a metric tube to fit an -AN fitting is not the right way.

And the link shows him using a reducer. Just the same as adding an adapter to the swagelok fittings...

 

Curious to know why you think flaring the metric tube for AN is not the right way for you. Both ways seem fine as far as sealing goes. 8mm tube is only 0.002" bigger than 5/16" (-5AN)... Which should ensure a nice snug fit for the sleeve.

And it's obvious both need adapters, the point I was trying to make is I personally would not go with Swagelok because of the NPT connection which requires thread sealant and instead I'd rather go with AN to AN self sealing method. If Swagelok had an AN version I'd probably go for it.

 

Why not just run new -6 alum line under the car or Teflon stainless hose and be done with it.

 

I didn't mind using some thread sealant at all. I don't plan on removing the lines anyway.

I understand that there isn't much of a difference with the AN flare and metric tubing. But, I'm still not comfortable with it.

I work in aerospace and because of that, I tend to lean towards exactness rather than "close"...

 

I hear ya' but I wouldn't sweat 2 thousandths of an inch on a steel tube that probably has a higher outer diameter tolerance than that especially when the AN sleeve is supposed to be the tighter one out of the two.

 

To use the swagelock do you need to cut off the oem flared end?

 

yes