I am trying to install them using compression fittings and I don't know if its because the fitting is brass and the tube is steel but the fitting will not tighten.it just pops the thread from the collar off the thread in the inner fitting part when i try to tighten it. Am I using the wrong compression fitting.

I thought it was a Regular brass compression fitting 3/8 or feed line and 5/16 for return line.

I bought the fittings from pepboys. It says gator grippers and it says not for brake line use.

Please help!
Thanks !

------------------
===Always trying to find time to work on cars===
Louis Duet
Baldwin, Long Island, NY
"My mind spins like helicopter blades." -G. Rossdale
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Blue" <= '85 Fiero GT
3800sc series 2 swap in progress
~~~~~~~~~~~~~~~~~~~~~
"Boo" <= '81 Delorean DMC-12
VIN #5835
Stock PRV engine
Peugot 604 Intake manifold
Exhaust headers
Anti-3rd brake light

I think I'm just gonna go with flared brake lines and attach the lines by flaring them.

------------------
===Always trying to find time to work on cars===
Louis Duet
Baldwin, Long Island, NY
"My mind spins like helicopter blades." -G. Rossdale
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Blue" <= '85 Fiero GT
3800sc series 2 swap in progress
~~~~~~~~~~~~~~~~~~~~~
"Boo" <= '81 Delorean DMC-12
VIN #5835
Stock PRV engine
Peugot 604 Intake manifold
Exhaust headers
Anti-3rd brake light

Should be standard Brass fittings for steel line (not nylon) When you tighten them, they should NOT pull apart... Seems to me that you might have gotten the wrong ones... -Jason




These ones are Dorman sold at Advanced Auto parts (other stores should be similar)

3/8 http://shop.advanceautopart...compression+fittings

5/16 http://shop.advanceautopart...compression+fittings

I'm gonna flare the ends and attach them that way so it ensures no leaks.
But is it a single or double flare? The lines I bought look like double flare but they say standard flare. The flaring tool can make either. Now I'm getting confused on what type of flare I should make.

------------------
===Always trying to find time to work on cars===
Louis Duet
Baldwin, Long Island, NY
"My mind spins like helicopter blades." -G. Rossdale
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Blue" <= '85 Fiero GT
3800sc series 2 swap in progress
~~~~~~~~~~~~~~~~~~~~~
"Boo" <= '81 Delorean DMC-12
VIN #5835
Stock PRV engine
Peugot 604 Intake manifold
Exhaust headers
Anti-3rd brake light

That should have worked. The sleeve should have been pretty snug on the tube. Was it loose? That sleeve gets a bit crushed between the fitting's body and nut. That's what makes the seal.

Is it actually breaking the fitting or just striping the threads?
Either way, too tight.

Maybe they are low quality.
???

Was it loose on the fuel filter side or the stainless hose side? Your factory lines may have been corroded which could prevent getting a good seal.

You could always go to AN lines. But that will cost over $100 for the hose and fittings. And you still have to get a 37 degree AN flare tool too.

Bottom line though, these should work.

[This message has been edited by 2002z28ssconv (edited 05-26-2015).]

The gator gripper I tried first is the exact one in that picture. I think it stripped the threads the first time
I tried to tighten it. Anything past finger tight caused it to pop apart , I think because of the e stripped thread.
Now I'm just hoping that there is enough tubing that's not mangled on my 3/8 feed line (part of the braided line) after unsuccessfully trying to flare the end and i hope now that a compression fitting will grab. I am using new brake line coming out of the filter running up the side wall so no pitting there. I only tried it on the stainless side so far anyway.
Ill try again and let you guys know what worked and what didn't.
Ill have to get a new fitting because of this one being stripped . The fitting didnt break it would just pop the threads. I never got a chance to tighten it.

Those AN lines are ridiculously expensive so im trying what I can first.

------------------
===Always trying to find time to work on cars===
Louis Duet
Baldwin, Long Island, NY
"My mind spins like helicopter blades." -G. Rossdale
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Blue" <= '85 Fiero GT
3800sc series 2 swap in progress
~~~~~~~~~~~~~~~~~~~~~
"Boo" <= '81 Delorean DMC-12
VIN #5835
Stock PRV engine
Peugot 604 Intake manifold
Exhaust headers
Anti-3rd brake light

[This message has been edited by Lou and Blue (edited 05-27-2015).]

If you want, I'll bend a set that matches the originals for you if you can't find one. I will even put a 45 degree double flare on it too.

Pm sent.