I have an issue at the moment with my fuel lines. I have a marine-style fuel filter block with 2 inlets & 2 outlets. Two block-off plugs are fitted, as well as two fuel line fittings (one 1/2" barb, and one 1/2" adapter). I believe the barb is a tapered fit, so shouldn't need any goo to seal (I still use some anyway). But the adapter is not a tapered thread, therefore relies on sealant to seal the threads.
I've mucked around with these so far:
* Loctite #3 Aviation sealant goo (non-hardening)
* Teflon tape
* Teflon Master Pipe Sealant (white goo). I think it's another Loctite product.
What do you guys use? What is the best for all these sort of fittings? I haven't been able to pinpoint which fitting is actually leaking yet, but it's driving me crazy. Only under about 15psi of pressure (Carter electric fuel pump).
Do any of them require much time to set? From what I've read most of them should be ready to go almost instantly (for low pressure).
If using good old Teflon tape (most people I speak to just use it), how many layers do you use, ie. how many times around the thread???
Help and thoughts would be great!!!!!!!
Which sealants/goos do you use on threads?
Started by
LXCHEV
, Mar 13 2006 11:50 PM
10 replies to this topic
#1
LXCHEV
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Posted 13 March 2006 - 11:50 PM
#2
_Jewboy_
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Posted 14 March 2006 - 02:00 AM
I've had a hard time trying to find stuff thats fuel proof (some say they are resistant but not for extend use), i ended up just using teflon tape, when you do wrap it put the fitting in your left hand and wrap in a clockwise direction this way when you wind it in it doesn't come off (you shouldn't need to take it too far up the thread so that way you won't see it once it tightened and try not to get any hanging over the hole). I'd give it atleast 5 layers or so (it is thin stuff), after the first one i put a bit of tension so it bites into the grooves better. I personally didn't want to use it but was forced to as the fittings i needed were NPT (angled thread) but they supplied BSP (parrallel) and couldn't get NPT anyway (and they call themselves a speed shop).
#3
J-Rod
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Posted 14 March 2006 - 07:34 AM
The best products iv'e used for this purpose are:
3m Type 'M' adhesive and
Three Bond Black
3m Type 'M' adhesive and
Three Bond Black
#4
J-Rod
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Posted 14 March 2006 - 07:37 AM
Further to the above.. you could probably get away withu just using stag on those fittings.
Does your filter look a bit like this?
Does your filter look a bit like this?
#5
LXCHEV
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Posted 14 March 2006 - 09:33 AM
Yep that's exactly what the filter looks like!
#6
_73LJWhiteSL_
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Posted 14 March 2006 - 12:03 PM
Thread steal, is the white 'can' a fuel filter? Saw a really nice HQ last nite with what looked like a white can hanging down the back, and my mate and me were discussing what it would be.
Steve
Steve
#7
LXCHEV
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Posted 14 March 2006 - 12:43 PM
Steve - the white thing in that pic that looks like an oi filter is indeed a fuel filter. Quite common to see them hanging under the rear of cars.
#9
Tiny
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Posted 14 March 2006 - 03:43 PM
I use that master pipe sealant Brett.
Dont go buy another filter assembly.. ive got a permacool filter setup that i bought for my car but never ran cause i cant fit the bastard anywehre! Its yours mate.. I'll bring it saturday for you.
Cheers mate.. Best of luck with it!
Dont go buy another filter assembly.. ive got a permacool filter setup that i bought for my car but never ran cause i cant fit the bastard anywehre! Its yours mate.. I'll bring it saturday for you.
Cheers mate.. Best of luck with it!
#10
_coupe202_
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Posted 14 March 2006 - 06:17 PM
use loctite 567 its solvent resistance and great for high pressure applications.
#11
LXCHEV
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Posted 14 March 2006 - 11:44 PM
Can you bloody believe it. Tim (Oldn64) dropped in quickly tonight and we were underneath the car having a gander. All of a sudden he says.... Ummmmm Brett I think you should have a look at this..... so I have a look with the light (which I didn't have out last night), and low and behold, there's a hidden hose sitting ABOVE my fuel filter with a split in it. (Factory 1976 hose from tank to cannister thing at rear of car). What a bastard. Replaced it, no more leak. YAY! Thanks Tim.
Anyway, thanks for all the other replies regarding sealants. It's still a question I've been wondering about, so good to hear what everyone else recommends for future jobs.
Cheers all
Anyway, thanks for all the other replies regarding sealants. It's still a question I've been wondering about, so good to hear what everyone else recommends for future jobs.
Cheers all
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