Modified H pipe?
Thread Starter
Instructor
Joined: Aug 2014
Posts: 135
Likes: 13
From: Arcadia CA
Modified H pipe?
I'd originally thought I'd go to an X pipe to get rid of the jingle like so many here do, but I'd also read that I'd lose some of that throatiness, rumble, and crackling/popping that I've grown to like...so my question is, has anyone modified their H pipe to get rid of the jingle? By cutting it open and taking out the baffles/discs/washers/whatever-they-are and bringing the crossover to the full 2.5" diameter, and what would that sound like? Videos or audio clips appreciated 
Instructor
Joined: Aug 2014
Posts: 209
Likes: 7
From: Albuquerque NM
I don't think there is any baffles in there, just an half inch hole and some tube welded to each side. My father just out headers and x pipe on his, and it gurgles and pops just like always, maybe even more than before
Drifting
Joined: Mar 2011
Posts: 1,807
Likes: 331
From: Ocala FL
I'd originally thought I'd go to an X pipe to get rid of the jingle like so many here do, but I'd also read that I'd lose some of that throatiness, rumble, and crackling/popping that I've grown to like...so my question is, has anyone modified their H pipe to get rid of the jingle? By cutting it open and taking out the baffles/discs/washers/whatever-they-are and bringing the crossover to the full 2.5" diameter, and what would that sound like? Videos or audio clips appreciated
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
Yeah from what I've read the crossover is actually mostly a reinforcement nothing to actually balance the exhaust pressure. Guess they thought they would punch a small hole to do a little something. Corsa used to have a display with an H cut down the middle to show this and to show how much better their X pipe was.
Thread Starter
Instructor
Joined: Aug 2014
Posts: 135
Likes: 13
From: Arcadia CA
So upon further inspection of images of our "H pipes" cut in half, I was wrong and there is nothing inside the crossover...but that still leaves me wondering how the car would sound if those holes were widened to the full 2.5" diameter
Drifting
Joined: Dec 2010
Posts: 1,776
Likes: 500
From: West Seneca NY
From what I have read and researched the X Pipe will give a higher pitched exhaust note, the H Pipe gives a deeper note, and apparently when you open the hole diameter larger it would deepen that more but would still would not flow as well as an X Pipe. There are videos on Youtube that give you somewhat of an idea of exhaust note.
I think it sounds horrible without it.
I think it sounds horrible without it.
Thread Starter
Instructor
Joined: Aug 2014
Posts: 135
Likes: 13
From: Arcadia CA
I'm guessing no one has any sound clips of of what the widened holes would sound like, and I might be better off going with an X anyway. The X would probably drone a lot less than the widened H if I end up getting some B&B Bullets to replace my stock TI's. I'm in CA so for now I'm stuck with stock manifolds.
Melting Slicks
Joined: Jun 2013
Posts: 3,473
Likes: 691
From: West Virginia
I seem to recall that the last edition of the Pontiac GTO they got rid of the H pipe to give the exhaust note a bit more "attitude". All the H pipe is there for is pressure balancing, hence the small hole.
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Thread Starter
Instructor
Joined: Aug 2014
Posts: 135
Likes: 13
From: Arcadia CA
True, the '04-'06 GTO had true duals that ran through a single resonator. I know the holes are for equalization but I was just wondering if widening these holes would eliminator jingle, and sound good.
Pro
Joined: Aug 2014
Posts: 501
Likes: 44
From: Aurora Colorado
[QUOTE=6speedsteve;1589557911]From what I have read and researched the X Pipe will give a higher pitched exhaust note, the H Pipe gives a deeper note, and apparently when you open the hole diameter larger it would deepen that more but would still would not flow as well as an X Pipe. There are videos on Youtube that give you somewhat of an idea of exhaust note.
I think it sounds horrible without it.
Sounds like a tractor.
I think it sounds horrible without it.
Sounds like a tractor.
