Advice on these nylon hose ends. (Summit brand)

[v6buicks]

Hey guys,

I bought some -12 braided nylon hose and ends from Summit and the installation didn't go as easily as I expected. Perhaps I'm expecting too much, but I guess that's why I'm here.

I know there's a lot of black to be able to see what's going on, but these are the two piece design and they both have a lot of space between their mates. The one side of the hose end (I'll call it the nut) screws left handed onto the hose. Then the fitting side piece threads into the open end of the nut while simultaneously wedging the hose into the nut and locking it in place. My question is regarding whether or not the two pieces are supposed to get closer to bottoming out. The pic below shows that they should not bottom out, but that super tight spec does not give me confidence that I've done it right. Mine have about a 1/4" of clearance. I tried lubing everything up with WD-40 before putting them together, but it didn't help much. This is also using a wrench on one side and the bench vice on the other. Thanks in advance!

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[LikeABauce302]

A 1/4" of clearance is too much. It should be very close to bottomed out.

 

[v6buicks]

Do you use any sort of lubricant? It's so tight at this point that I'm about to strip the hex off.

 

[zenriddles]

I've done these before. It sounds like you may have inserted the hose in too deep.

 

[v6buicks]

I've done these before. It sounds like you may have inserted the hose in too deep.

That was my initial thought. I backed the hose out a little and ended up with this.

Still not even close to bottomed but the hose is getting pushed out on one side.

I then remembered that the hose threads are reversed where the insert threads are normal. Threading the insert in should naturally pull the hose in tighter as you turn, so I sorta gave up on that theory.

The hose I'm using is quite a bit tougher than expected. It seems to me like the cone that's being forced through the ID of the hose just doesn't want to go in any further. Maybe a small amount of heat would soften it up? I don't like the idea of heating nylon though.

 

[zenriddles]

Soak in boiling water for a couple minutes to soften hose ends gently without hurting the hose. No torches or heat guns.

 

[v6buicks]

Solid idea! Is that what I was supposed to be doing all along? There are no instructions that I could find for these things, so I'm really guessing.

 

[LikeABauce302]

Do you use any sort of lubricant? It's so tight at this point that I'm about to strip the hex off.

I use Earl's fitting assembly lubricant. It seems like it's just a medium viscosity all purpose oil. I put it on the inside of the house, and also on the threads of the fitting.

You may have the hose too far into the nut. If you look inside of the nut, there should be a small shoulder inside that the hose end butts up against

-12 and larger usually suck to put together. I've found myself putting the hose side and nut in a vise and cranking the fitting down.

 

[v6buicks]

No dice post boil. Here's an idea of how much force is needed.

It certainly doesn't help that I have wire braided hose. I would not have bought it if I new that. This is wayyyy overkill for a crankcase vent. I'm pretty salty about ruining $40 worth of fittings and possibly $55 worth of hose.

 

[Bob Kazamakis]

I’ve had awesome luck with their twist lock stuff if you’re looking to go with something easy to install.

 

[v6buicks]

I’ve had awesome luck with their twist lock stuff if you’re looking to go with something easy to install.

Isn't that what I have?

 

[Ear Rak]

Are you lubing the threads? Always lube the threads. ATF or Air tool oil works best.

 

[Pewter-Camaro]

Yuck I messed with braided lines in the past. Looks great but man it’s work to get them assembled. I prefer push on style lines and single end crimp style clamps on them like the Earls Vapor guard line.

 

[v6buicks]

I talked to a buddy. He recommended that I electrical tape the hose up where I want to cut so that it doesn't fray.

I asked "Does that really matter in terms of putting the hose ends together?" I honestly thought it was just for keeping the the braiding from looking like poop.

He just said "trust me" and he was right. Also, you cannot use enough lube. If it started to get stuck, I backed off a little and sprayed some more. The beat up fittings don't bother me too much other than that they're brand new. I just can't be too picky given the condition of the rest of the car. lol Thanks for the help guys.

 

[LikeABauce302]

Always use tape when you cut. I use masking tape wrapped as tightly as I can. I cut on the taped part using a cutoff wheel on my angle grinder. Then just as I'm about to assemble the hose, I peel the tape off and try to quickly get the nut over the end before it has any chance to fray or spread open.

The more you do it, the easier it gets. Assembling hoses is more difficult than it seems it should be. It's an acquired skill for sure.

 

[greasy]

When I was doing this shit on the Cobra for the coolant crossover mod, I had a HELL of a time. My issue was a purchased cheap eBay hose thinking it would be ok. The shit was awful and I ended getting the Summit hose and it turned out much better.

 

[v6buicks]

Always use tape when you cut. I use masking tape wrapped as tightly as I can. I cut on the taped part using a cutoff wheel on my angle grinder. Then just as I'm about to assemble the hose, I peel the tape off and try to quickly get the nut over the end before it has any chance to fray or spread open.

The more you do it, the easier it gets. Assembling hoses is more difficult than it seems it should be. It's an acquired skill for sure.

I went into this really cocky because I used to do plumbing every day at work. We had push-on stuff, Swagelok, Autoclave tools, and a full hydraulic hose cutting and crimping station. I've made a lot of these things, but these Summit fittings were a PITA! I'm sure you're right in that I'll get better as I practice more. I just found it wild at how tough it was.

 

[LikeABauce302]

Just wait until you work with PTFE hose. I wouldn't say it's more difficult, but there is a new learning curve.

 

[Bob Kazamakis]

Isn't that what I have?

No. The ends are barbed and the hose pushes on.

 

[v6buicks]

Ah I follow you now. Yeah, that would have been way easier, worked just fine, and been cheaper. Oh well!