Vaccumn leak after installing Thorley shorties - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ramsman34 · 10-23-2010, 03:31 PM

Newhall Muffler just did the install of my C.A.I intake, Thorley shorties and Flowmaster AMT cat back. (great job and it sounds awesome!) But...They had probs with getting the Y pipe to fit after the headers were installed and had to bend it slightly. However, they called me and said the headers have a vaccumn leak at the flange on the drivers side.

Anyone with the Thorley's have this problem? If so,how did you solve it?

Thanks,

I searched the forum and didn't find anything on this.

bankrollb · 10-23-2010, 04:07 PM

You mean an exhaust leak? I installed them on mine and had no problems. I tightened the front bolts first before the rear ones. No leaks.

ramsman34 · 10-23-2010, 04:35 PM

I could swear he said vaccumn leak which makes no f'ing sense so I will assume he meant exhaust leak. This is a professional muffler/exhaust shop and have done a lot of work on a lot of cars including my friend's SS...I assume they know what they are doing, talking about, and know how to put headers on. They think the flange is the problem and might need to be milled????

hypurone · 10-23-2010, 04:44 PM

The gaskets there are a "crush" type gasket and should not be re-used for best results. I replaced mine when I did the job and no probs... didn't have to bend anything either. They shouldn't have had to as it is a "flex" style downpipe ...

ramsman34 · 10-23-2010, 07:20 PM

Quote:

They shouldn't have had to as it is a "flex" style downpipe ...

one side didn't match up with the Thorley "Y" connection to the X pipe. do you have the same Thorley and Flowmaster set up?

ramsman34 · 10-23-2010, 07:22 PM

Quote:

The gaskets there are a "crush" type gasket and should not be re-used for best results.

My first suggestion was new gaskets as the Thorleys don't come with any replacement ones. We will see when I bring the car back to them Tuesday.

hypurone · 10-23-2010, 09:11 PM

Quote:

Originally Posted by ramsman34

one side didn't match up with the Thorley "Y" connection to the X pipe. do you have the same Thorley and Flowmaster set up?

I have the DT shorties running in to the stock downpipes which contain the cats. I am running the stock resonator with no mufflers. Sounds tits!

There are clamps at the back of the downpipes that can be loosened to help get things aligned but they should have known/seen this....

Def get the crush gaskets replaced, good luck.

10-23-2010, 03:31 PM	#1
ramsman34 Drives: 2011 Summit White, 2SS/RS-LS3 Join Date: Jul 2010 Location: Dash Point, WA Posts: 364 View My Garage	Vaccumn leak after installing Thorley shorties Newhall Muffler just did the install of my C.A.I intake, Thorley shorties and Flowmaster AMT cat back. (great job and it sounds awesome!) But...They had probs with getting the Y pipe to fit after the headers were installed and had to bend it slightly. However, they called me and said the headers have a vaccumn leak at the flange on the drivers side. Anyone with the Thorley's have this problem? If so,how did you solve it? Thanks, I searched the forum and didn't find anything on this.

10-23-2010, 04:44 PM	#4
hypurone I'm not totally useless.. Drives: ... Join Date: Sep 2009 Location: ... Posts: 2,008 View My Garage	The gaskets there are a "crush" type gasket and should not be re-used for best results. I replaced mine when I did the job and no probs... didn't have to bend anything either. They shouldn't have had to as it is a "flex" style downpipe ... __________________ "You were really flyin' when I passed you back there!" - Born on 10/05/09 MyCamaroBuildInfo Last edited by hypurone; 10-23-2010 at 04:44 PM. Reason: SP

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10-23-2010, 04:07 PM	#2
bankrollb Drives: 2010 Camaro 2SS/RS Join Date: Sep 2009 Location: West Allis, WI Posts: 160 View My Garage	You mean an exhaust leak? I installed them on mine and had no problems. I tightened the front bolts first before the rear ones. No leaks.

10-23-2010, 04:35 PM	#3
ramsman34 Drives: 2011 Summit White, 2SS/RS-LS3 Join Date: Jul 2010 Location: Dash Point, WA Posts: 364 View My Garage	I could swear he said vaccumn leak which makes no f'ing sense so I will assume he meant exhaust leak. This is a professional muffler/exhaust shop and have done a lot of work on a lot of cars including my friend's SS...I assume they know what they are doing, talking about, and know how to put headers on. They think the flange is the problem and might need to be milled????