i just recently finished setting up ls-t on my teg, and i'm only running about 8 pounds of boost, but every day a different coupler keeps blowing off the piping.


anyone have any suggestions to help keep the couplers on? i've heard of people using pvc glue/cement on the piping and couplers to keep them adhered.

ideas/suggestions?

thanks

 

Hot side or cold sire? Obviously this isn't normal. Try adjusting your BOV!

 

weld a bead around the pipe where your using couplers and use good quality clamps. no, not the home depot once.

 

well either side. the majorities of the blow offs have been from the charge side.

and adjusting the blow off valve? they're not blowing when i let off the throttle, they're blowing under full boost.


Modified by lude27 at 1:13 AM 4/11/2008

 

well i was using the t bolt clamps. but believe it or not the "home depot" screw style clamps have held on better than the t bolt ones. the t bolt ones tend to just bend when tight.

 

If this really starts becoming a problem vibrant makes a weld on peice that holds pipes together for cheap money. im not sure exactly what its called but just search vibrant products and youll find it. the welding a bead idea is always a good trick too. also you can try some silicone to hold them together ( small amount!) not glue!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lude27 &raquo;</TD></TR><TR><TD CLASS="quote">well i was using the t bolt clamps. but believe it or not the "home depot" screw style clamps have held on better than the t bolt ones. the t bolt ones tend to just bend when tight.</TD></TR></TABLE>

are your pipes bead rolled? aluminum or steel?

 

weld a bead. I forgot to tighten a couple clamps and the bead held the coupler even at 17psi on the street and dyno. didn't notice till next oil change.

 

How well does your piping line up? Sounds odd at only 8 psi. Post a pic of the piping setup

 

no they're not bead rolled, which i think is basically my problem. cause they couplers just keep sliding off no matter how tight i put them.

and they're aluminum.


Modified by lude27 at 12:01 PM 4/11/2008

 

bead roll them, problem solved.

and never put a coupler in the middle of a bend. make sure the coupler is always on a straight peice.

 

yeah i sorta realized that. cause the straight couplers haven't blown once. i was using a few 90 degree couplers, and those were the ones there were getting blown off.

i'm bringing my multi-piece piping to a friend's muffler shop and i'm gonna have him mandrel bend 2 solid pipes and bead roll the ends so i can use straight couplers, and very few of them.

and so basically, with picture reference, the complete opposite of what i have now. circled red have blown twice already.



i'm learning the hard way


Modified by lude27 at 3:04 PM 4/11/2008

 

if you've got crappy mounts, that will also contribute to the stress being placed on the couplers.

 

a) is that tape?
b- are the couplers even silicone?
c- thats an odd setup.

 

usually couplers blow off because the piping fits like chit

 

Wiggins clamps usually hold up pretty well.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Silverbeast &raquo;</TD></TR><TR><TD CLASS="quote">Wiggins clamps usually hold up pretty well.</TD></TR></TABLE>

they should for $200

EDIT: holy smokes batman, that is some of the most ghetto int. piping I have seen in a long time, what are those thin plastic coupler looking thingys you got?

 

that is very far from being the most ghetto piping around HT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93supercoupe &raquo;</TD></TR><TR><TD CLASS="quote">that is very far from being the most ghetto piping around HT</TD></TR></TABLE>
true
it looks like he covered them in electrical tape...
they do sell them in black....

 

are the couplers the rite size 8 lbs shouldnt be a prob ? cheapest way is a bead of 100% silicone you might never get them back off but who cares...lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93supercoupe &raquo;</TD></TR><TR><TD CLASS="quote">that is very far from being the most ghetto piping around HT</TD></TR></TABLE>

Never said it was the absolute "most" ghetto, but pretty close


Some guy I helped get his car ready for a tune the other day had plumbing fernco's on his charge pipes, and this same guy text'd me a day later and asked if it was ok to drill a hole temporarly in his gas tank (while it was on the car and full of gas) to drain it so that he could fill up with E85, and plug it with duct tape temporarly until after his tune

 

whats even funnier about that is that there's a drain plug on the gas tank.

 

okay to reply to almost everyone all at once:

those are black high pressure 90 degree couplers wrapped in black duct tape to prevent them from inflating. seems kinda "ghetto" but it was a little trick picked up from past friends doing turbo kits and having the couplers literally inflate like balloons just before blowing off. the duct tape keeps them extra firm and prevents that.

the original couplers were single ply blue couplers that ripped at the seem before i used those. yes, they were crappy ebay couplers.

but like i said, i'm currently getting those pipes in the picture made into 2.5" one piece pipes to eliminate all the 90 degree couplers, hopefully eliminating the blow offs i keep getting.

should've just bought specifically made, solid piece pipes to begin with..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kyden &raquo;</TD></TR><TR><TD CLASS="quote">whats even funnier about that is that there's a drain plug on the gas tank.</TD></TR></TABLE>

I know, I made him aware of that

 

The issue is not the clamp but the coupler. I can tell those are HomeDepot 90* couplers. They melt and deform very easily thus causing them to pop off.

By the way, there are very few muffler shops in NJ with a mandrel bender. Most likely your buddy is going to crush bend the pipes. You'd be better off buying prebent mandrels and having someone weld them up for you. Charge pipes just need to hold pressure. With the couplers they have minimal stress so big strong welds are really not important.