H - Pipe??
Thread Starter
Burning Brakes
Joined: Oct 2001
Posts: 842
Likes: 3
From: Woodruff SC
St. Jude Donor '10
H - Pipe??
I'm running 2 1/2 chambered exhaust and installing Dynomax headers real soon. Should I run a H-Pipe or not? What's the advantages or disadvantages?
Thanks!!!
:cheers:
Thanks!!!
:cheers:
Drifting
Joined: Nov 2000
Posts: 1,428
Likes: 0
Re: H - Pipe?? (DP77Vette)
It will take the snap, crackle, and pop out of your chambered pipes......You have to decide if thats what you want. Sometimes I wish I wouldnt have done it. On the + side, I think I picked up a few ponies by adding the "H".
Racer
Joined: Sep 2002
Posts: 252
Likes: 0
From: wellington N Zealand
Re: H - Pipe?? (DP77Vette)
I say go for the H pipe, it takes that harsh rattle out of the exhaust noise and I think gives a more throaty rumble. :auto:
Mine sounds great. :thumbs: :flag:
:cool: :cool: :cool:
Mine sounds great. :thumbs: :flag:
:cool: :cool: :cool:
Burning Brakes
Joined: May 2000
Posts: 958
Likes: 0
From: Brisbane, Australia 1985 Coupe
Re: H - Pipe?? (tippi58)
I say go for the H pipe, it takes that harsh rattle out of the exhaust noise and I think gives a more throaty rumble. :auto:
Mine sounds great. :thumbs: :flag:
:cool: :cool: :cool:
Mine sounds great. :thumbs: :flag:
:cool: :cool: :cool:
Burning Brakes
Joined: Mar 2002
Posts: 839
Likes: 0
From: Lewiston, Maine
Re: H - Pipe??
I'm about to undergo this same upgrade. Depending upon your exhaust you may want to try it without the H pipe at first.
I'm going to install my exhaust in sections that can be removed. I think what I'll do is make a section that is as long as the H pipe itself, that way I can unclamp it and change to one or the other style in the time it takes to jack the (cold) car up, undo some exhaust clamps, pull pipes and install the other set.
I hear X pipes are pretty common and have different sound characteristics entirely.
I'm going to install my exhaust in sections that can be removed. I think what I'll do is make a section that is as long as the H pipe itself, that way I can unclamp it and change to one or the other style in the time it takes to jack the (cold) car up, undo some exhaust clamps, pull pipes and install the other set.
I hear X pipes are pretty common and have different sound characteristics entirely.
Pro
Joined: Aug 2002
Posts: 560
Likes: 0
From: The Valley of The Sun AZ
Re: H - Pipe?? (Alwyn678)
I have an H pipe on mine and what it does is help equalize the pressures across both pipes, thus eliminating the popping noise. It's a more mellow sounding exhaust and IMHO sounds more like power instead of noise.
Melting Slicks
Joined: Nov 2001
Posts: 2,659
Likes: 7
From: Katy (Houston) TX
CI 7-8 Veteran
Re: H - Pipe?? (tersian)
I also researched this and the opinion at the time was that an x-pipe is better. You might consider that. I'm going to get an x-pipe put in but I'm debating putting in some exhaust cutouts so I can run open if I want at the track.....or to shut up the little ricers. :rofl:
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Burning Brakes
Joined: Jul 2000
Posts: 1,162
Likes: 2
From: Beaverton, OR
Re: H - Pipe?? (tshort)
I also researched this and the opinion at the time was that an x-pipe is better. You might consider that. I'm going to get an x-pipe put in but I'm debating putting in some exhaust cutouts so I can run open if I want at the track.....or to shut up the little ricers. :rofl:
Burning Brakes
Joined: Mar 2002
Posts: 839
Likes: 0
From: Lewiston, Maine
Re: H - Pipe??
With my car down :( I was just talking about this with my friend as he gave me a lift home from work one day. I said, "What if I could run a pretty quiet, tame exhaust that even a little kid couldn't complain about? And then run one of those cutouts where you can pull a cable from inside the cabin and have this monsterous, throaty beast coming out of your engine?"
I bet the ricer's tach would go from revving at about 6 grand to sticking its tail between its legs and the tach needle curling and hiding. :lolg:
I bet the ricer's tach would go from revving at about 6 grand to sticking its tail between its legs and the tach needle curling and hiding. :lolg:
Tech Contributor
Joined: Aug 1999
Posts: 15,116
Likes: 3,911
From: Connecticut, USA
Re: H - Pipe?? (DP77Vette)
I have 2.5" chambered pipes and headers. I have a 2" H pipe just past the collectors and in front of the Muncie. It works well and the car runs better then it did with just the chambered pipes.
Gary
Gary
Pro
Joined: May 2003
Posts: 619
Likes: 0
From: winnipeg MB
Re: H - Pipe?? (gtr1999)
I will never know... can't really H-pipe a set of side pipes. Man that would look stupid, you could call it a stump pan for those times you hit the ditch when the doghnutts go wonky.
Le Mans Master
Joined: Jul 1999
Posts: 9,206
Likes: 17
From: Sewell NJ
Re: H - Pipe?? (DP77Vette)
I have an H-pipe on mine with 2 1/2 inch pipes. The mufflers are Dynomax Ultraflows and have a nice tone at idle and cruise. When you step in it they open up nice and have a very strong sound. I think the h-pipe contributes to keeping it quieter and makes it a much more livable system. Here's a pic.
PS
Forgot to mention that I have Dynomax ceramacoat headers.
[Modified by vettfixr, 7:44 AM 7/17/2003]
PS
Forgot to mention that I have Dynomax ceramacoat headers.
[Modified by vettfixr, 7:44 AM 7/17/2003]
Melting Slicks
Joined: Nov 2002
Posts: 2,231
Likes: 7
From: Fort Pierce Florida
Re: H - Pipe?? (vettfixr)
I think I'm going to try for an x-pipe when I redo my exhaust in a couple months. X-pipe and a couple electric exhaust cutouts. Not sure how it will affect sound, but I'm almost certain that's the most performance oriented setup.
Drifting
Joined: Jun 2000
Posts: 1,955
Likes: 2
Re: H - Pipe?? (DP77Vette)
I ran my '74 with Hooker Super Comps and 2-1/2" chambered pipes for a few months without an H-pipe. It sounded loud, but sounded too much like glass-packs for my taste, and my friends gave me a hard time about it. So I had an H-pipe installed for $30 at the local shop, really helped. It reduced interior resonance and noise, reduced the popping sound, and mellowed out the tone. It is still a very unique sound, but not obnoxious.
Same with my Suburban (454, DynoMax headers and Super Turbo mufflers). The shop forgot to put the h-pipe in and I got home before I realized it. I really didn't like all the interior resonance and it was too loud at idle and in low RPMs, so I took it back. What a difference...nice quiet idle, very little resonance, but when you get on the loud pedal it really screams.
Both The Corvette and Suburban seemed to pick up low-end torque with the H-pipe as well.
In short...go with the h-pipe.
Jeff
Same with my Suburban (454, DynoMax headers and Super Turbo mufflers). The shop forgot to put the h-pipe in and I got home before I realized it. I really didn't like all the interior resonance and it was too loud at idle and in low RPMs, so I took it back. What a difference...nice quiet idle, very little resonance, but when you get on the loud pedal it really screams.
Both The Corvette and Suburban seemed to pick up low-end torque with the H-pipe as well.
In short...go with the h-pipe.
Jeff
Le Mans Master
Joined: May 2003
Posts: 5,642
Likes: 1
Re: H - Pipe?? (DP77Vette)
I have full length hedman headers, and 2 chamber 50 series flows with NO hpipe. I think the hpipe would give me a few more ponies, but I love it when i let of the throttle real fast and my exhaust sounds like an AK-47. hehehe
To make up for the ponies I just dropped in a stroker. :crazy:
To make up for the ponies I just dropped in a stroker. :crazy:
Burning Brakes
Joined: Mar 2002
Posts: 839
Likes: 0
From: Lewiston, Maine
Re: H - Pipe??
The way I understand it, an H-Pipe (or any crossover pipe) helps with the low end power. But yes, I do like the exhaust pops you most often get when each bank of cylinders has its own pipe :thumbs: