Open Headers
Thread Starter
Launching!
Joined: Dec 2007
Posts: 208
Likes: 0
From: DeLaWaRe
Open Headers i just installed my long tube headers is it all right to drive the car around open headers for the time being till i put the y pipe on...i heard people say that iits not good for the o2s...i was thinking on running it at the track like this as well.
A few days is alright, but if you're planning to run open headers for an extended period you might regret it. The cold air cools the engine faster and you could end up with a warped valve.
Banned
Joined: Feb 2008
Posts: 325
Likes: 0
From: I moved to over there
Cold air will hurt an exhaust valve, but that is when you don't run a manifold or have a leak at the head. Since you have long tube headers you won't hurt the valves.
It will be noisy and tune will be off, but it won't 'hurt' it per se. Also it will not hurt the O2s. They are heated, but they may not maintain their proper heat range with exhaust open.
I run open header all the time and never had any problems beyond false knock, running rich (if tune not compensated)...
Good luck
It will be noisy and tune will be off, but it won't 'hurt' it per se. Also it will not hurt the O2s. They are heated, but they may not maintain their proper heat range with exhaust open.
I run open header all the time and never had any problems beyond false knock, running rich (if tune not compensated)...
Good luck
Thread Starter
Launching!
Joined: Dec 2007
Posts: 208
Likes: 0
From: DeLaWaRe
yea i know the cutouts was still open but ur o2s were not right their...i thought that it would really **** them up but i guess not...plus iam only going to ride around with them open for a little while...u know have a little fun... plus its really to loud to stay like that all the time
Trending Topics
I wouldn't race it like that but it's fine to run it around for a little bit....
would like to see what hillbilly track would let you run uncapped anyways.... most all of them require mufflers or some type of decibel limit...
would like to see what hillbilly track would let you run uncapped anyways.... most all of them require mufflers or some type of decibel limit...
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
Cold air will hurt an exhaust valve, but that is when you don't run a manifold or have a leak at the head. Since you have long tube headers you won't hurt the valves.
It will be noisy and tune will be off, but it won't 'hurt' it per se. Also it will not hurt the O2s. They are heated, but they may not maintain their proper heat range with exhaust open.
I run open header all the time and never had any problems beyond false knock, running rich (if tune not compensated)...
Good luck
It will be noisy and tune will be off, but it won't 'hurt' it per se. Also it will not hurt the O2s. They are heated, but they may not maintain their proper heat range with exhaust open.
I run open header all the time and never had any problems beyond false knock, running rich (if tune not compensated)...
Good luck
TECH Apprentice
Joined: Jun 2007
Posts: 313
Likes: 0
the only thing ive ever heard is that you want 18 inches(about the length of a muffler) past the collector for the o2's sake. my guess is heat may build up at the collector. what does your exhaust leak or what you are hearing sound like?
Banned
Joined: Feb 2008
Posts: 325
Likes: 0
From: I moved to over there
That is ball park to keep the o2 and tune happy. If you have a tune and cant compensate 12 - 18" will keep o2 happy and keep mixture correct
Banned
Joined: Feb 2008
Posts: 325
Likes: 0
From: I moved to over there
Try leaving CA you will be amazed how the rest of the states still let us have fun. Hell even Fla still has open exhaust and they have conjestion of people close to CA for the tracks I went to
I don't really know how to explain it. I'm going to be redoing my whole exhaust system with LT's and true duals here in a week or two. If it is any more than an exhaust leak, then it'll still do it after the new exhaust is done, then I'll get it checked out.
On The Tree
Joined: Jan 2008
Posts: 108
Likes: 0
From: prince rupert
I keep hearing 18 inches in this thread. 18 inches from what? From the collector of a long tube, which long tube. I mean aren't they all a little bit different in length between manufactures?
The reason I ask is cause I have the useless edelbrock shorties with the y pipe and the track time I have in I have unbolted the cat back exaust. I have a pipe and machined beveled adapter for the cat back attachment that eliminated the catalitic, ( shhhhh, don't tell). So where am I in the scheme of things of 18
inches?
The reason I ask is cause I have the useless edelbrock shorties with the y pipe and the track time I have in I have unbolted the cat back exaust. I have a pipe and machined beveled adapter for the cat back attachment that eliminated the catalitic, ( shhhhh, don't tell). So where am I in the scheme of things of 18
inches?
Last edited by NorthernZ; Jun 7, 2008 at 11:09 PM.
Don't know about the shorty's, but if your a good 18" back from the 02s you'll be fine, thats were collectors work well too, plus they will help move the torque curve lower in the RPMs where you want it, running open headers won't hurt anything (just your wallet when you get pulled over lol), but running open just past the 02s (talking LTs with NO extentions) will cause a rich mixture do too a lean reading (running cool) that the 02s are sending back to the PCM, now with an Ory, the drivers side will have more length in the pipe then on the pass side, so in reality, the pass side 02 will run cooler then the drivers side 02, thus throwing the reading off from side too side, thats why its best to run a full exhaust or equal length extentions, thats where the X pipe comes in handy, it keeps things equally balanced, as for the noise of open headers, i say BAD ***, they sound great!!!!