Header install
Thread Starter
Drifting
Joined: Mar 2018
Posts: 1,364
Likes: 414
From: New Jersey
Header install
Got myself a set of the 1 piece breathless performance headers. Plan on installing them this winter. Does anyone know how they install, from the top or the bottom? Or does anyone have the installation instructions for these?
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
I think for the most part they all install from the top. That's how my Kooks LTs go in/out. Process is not terribly complicated. Might want to do spark plugs and wires "while you're in there" since you will have an easier time without them installed anyway. Have a partner help you steady the header while you're starting the first and last bolt. DO NOT CROSS THREAD THEM AT ALL. It's so easy to do because its easy to get the header out of alignment. if you crossthread a bolt even slightly it will always want to go that way and you'll have to chase the threads in the head. Use a little antiseize on the threads too. Get them all snugged up at once and torque them to spec. Then get a tune.
Race Director
Joined: Oct 2004
Posts: 12,795
Likes: 4,614
I think for the most part they all install from the top. That's how my Kooks LTs go in/out. Process is not terribly complicated. Might want to do spark plugs and wires "while you're in there" since you will have an easier time without them installed anyway. Have a partner help you steady the header while you're starting the first and last bolt. DO NOT CROSS THREAD THEM AT ALL. It's so easy to do because its easy to get the header out of alignment. if you crossthread a bolt even slightly it will always want to go that way and you'll have to chase the threads in the head. Use a little antiseize on the threads too. Get them all snugged up at once and torque them to spec. Then get a tune.
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
Last time I did it was early 2017 so it's been a while and my memory could be fuzzy but I am pretty sure it was via the top. I'm going to have to do it again this winter so I guess I'll find out again lol
Thread Starter
Drifting
Joined: Mar 2018
Posts: 1,364
Likes: 414
From: New Jersey
Yes they are out of business. This was used set of headers in very nice shape. Since they're out of business there's no way to get the install instructions.
Drifting
Joined: Apr 2019
Posts: 1,562
Likes: 324
From: Morristown, TN
Texas speed I have passenger from top and drivers from bottom 🤷🏻♂️. Also use a floor jack to help you hold the end up under the car and it makes a world of difference in getting them bolted up.
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Safety Car
Joined: Aug 2011
Posts: 4,436
Likes: 403
From: Portland OR
Either way, you need to raise the car up a foot or more to connect them to the mid pipe etc.
Try both ways.
My ARH went in from the bottom.
Drive side was cake. Pass side a bitch.
Now that I have an LS3 with its pan, they fall in place.
Try both ways.
My ARH went in from the bottom.
Drive side was cake. Pass side a bitch.
Now that I have an LS3 with its pan, they fall in place.
Thread Starter
Drifting
Joined: Mar 2018
Posts: 1,364
Likes: 414
From: New Jersey
Lifting car up is not a problem. Was looking more on how it connects to the stock exhaust and if that's even possible. I only have the headers. They have a 3 bold solid flange. I may need aftermarket cats. I already have a bassini x pipe and want to keep it.