LG pro headers leak like crazy
Thread Starter
Heel & Toe
Joined: Oct 2015
Posts: 19
Likes: 0
From: Oregon
LG pro headers leak like crazy
Installed LG pro Long tube headers to my 2010 GS a few days ago by a professional muffler shop and even had to bring it back due to exhaust leaks, seems to leak everywhere.
He explained to me not much he can do without welding and that just isn't an option I wanted to take. He said it would also be a pain to install if we did.
He let me know it also sounds like a leak inside the collective in Addition to all the leaks at almost every joint.
Has anyone else had any issues with their LG headers?
He explained to me not much he can do without welding and that just isn't an option I wanted to take. He said it would also be a pain to install if we did.
He let me know it also sounds like a leak inside the collective in Addition to all the leaks at almost every joint.
Has anyone else had any issues with their LG headers?
Melting Slicks
Joined: Sep 2008
Posts: 2,360
Likes: 59
From: San Jose California
I do not have headers, but leaks can be fixed.
But first, I would take pictures of the leaks (Blackened in areas of the leaks.) and ask LG what they can do for you.
If for some reason they say they can not help, welding and possibly fly cutting if the flange is not flat, is not the end of the world.
A good shop could address this if it is actually weld leaks. If flange leaks due to a flatness issue, then a machine shop can address that.
Good luck,
DJ
But first, I would take pictures of the leaks (Blackened in areas of the leaks.) and ask LG what they can do for you.
If for some reason they say they can not help, welding and possibly fly cutting if the flange is not flat, is not the end of the world.
A good shop could address this if it is actually weld leaks. If flange leaks due to a flatness issue, then a machine shop can address that.
Good luck,
DJ
Burning Brakes
Joined: Jul 2014
Posts: 757
Likes: 47
From: Tracy CA
Mine leaked on most of the slip joints. For the longest time i had just wrapped exhaust wrap around them and used wide band clamps and it sealed it up good.
Last edited by C6David; Oct 11, 2015 at 06:20 PM.
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,629
The slip joints where not sealed with slip joint sealer as the exhaust system was being installed.
Before the pipes are slipped together, the ID of the larger pipe is give a coat of slip joint sealer inside it where the smaller pipe will slip into place, then once the two are mated, the band strap is tightened up to bind them to each other, and any slip seal sealer that is exposed on the bar pipes is whip off with a rag.
Before the pipes are slipped together, the ID of the larger pipe is give a coat of slip joint sealer inside it where the smaller pipe will slip into place, then once the two are mated, the band strap is tightened up to bind them to each other, and any slip seal sealer that is exposed on the bar pipes is whip off with a rag.
Safety Car
Joined: Nov 2006
Posts: 3,667
Likes: 159
The slip joints where not sealed with slip joint sealer as the exhaust system was being installed.
Before the pipes are slipped together, the ID of the larger pipe is give a coat of slip joint sealer inside it where the smaller pipe will slip into place, then once the two are mated, the band strap is tightened up to bind them to each other, and any slip seal sealer that is exposed on the bar pipes is whip off with a rag.
Before the pipes are slipped together, the ID of the larger pipe is give a coat of slip joint sealer inside it where the smaller pipe will slip into place, then once the two are mated, the band strap is tightened up to bind them to each other, and any slip seal sealer that is exposed on the bar pipes is whip off with a rag.
My installer went with beefier clamps than LG supplied too. And even then, after they heat cycled a few times, I had to get under mine and re tighten a couple of the clamps.
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Melting Slicks
Joined: Oct 2010
Posts: 2,220
Likes: 16
From: Sugarhill Ga
you have to address 1 leak at a time. The OE gaskets onto the heads work the best, exhaust putty and HD clamps should seal it up. A buddy had problems with his mufflers getting loose and spinning until we changed the clamps.