exhaust crossover on the y-pipe
Thread Starter
Joined: Aug 2001
Posts: 1,589
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From: British Columbia
Car: 90 IROC 5.7 hardtop
Engine: L98
Transmission: T5 swap
Axle/Gears: Yup -- they still work
exhaust crossover on the y-pipe
Have any of you been down this road before ?
I was looking at a Y-pipe for my car and it occured to me that they are grossly uneven length. Now if you've been around awhile you'll remember in the old dual exhaust days a cross-over was the first thing you did (well right after headers) to tune your exhaust. This was to balance out the irregularities caused by uneven pipe runs.
My left y-pipe is about twice as long as my right y-pipe and I am wondering if it will help to install something along the lines of what we used to call an 'H-pipe' or 'cross-over' between the two pipes.
The typical 3rd gen y-pipe looks something like this (see pic below). There is precious little room for one but it could be done.
Your thoughts ?
RP.
I was looking at a Y-pipe for my car and it occured to me that they are grossly uneven length. Now if you've been around awhile you'll remember in the old dual exhaust days a cross-over was the first thing you did (well right after headers) to tune your exhaust. This was to balance out the irregularities caused by uneven pipe runs.
My left y-pipe is about twice as long as my right y-pipe and I am wondering if it will help to install something along the lines of what we used to call an 'H-pipe' or 'cross-over' between the two pipes.
The typical 3rd gen y-pipe looks something like this (see pic below). There is precious little room for one but it could be done.
Your thoughts ?
RP.
Supreme Member
Joined: Oct 2001
Posts: 1,761
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From: Ailsa Craig, Ontario, Canada
Car: 84 Trans Am
Engine: 350
Transmission: 700r4
well first of all it would be a hella of a lot of work and second i really dont think it would be worth it. the y-pipe just runs into a single pipe anyway. if you are going to an h-pipe, do a dual system like mine. i never bothered putting an h-pipe in cause i didnt want to deal with the hassle. perhaps in the future i will. but as for the y-pipe i really dont think it would make any difference.
H-pipe.... Y-pipe.... SCREW THAT! Get a friggen O-pipe. They outflow H or X any day.... and you still get the backpressure.

In all seriousness though... "H"ing your Y-pipe will not help anything. One pulse will still need to take a longer path wether it goes through the H or not.

In all seriousness though... "H"ing your Y-pipe will not help anything. One pulse will still need to take a longer path wether it goes through the H or not.
Last edited by johnyIROC; Sep 27, 2002 at 02:26 PM.
Thread Starter
Joined: Aug 2001
Posts: 1,589
Likes: 2
From: British Columbia
Car: 90 IROC 5.7 hardtop
Engine: L98
Transmission: T5 swap
Axle/Gears: Yup -- they still work
post the pics
Originally posted by darbleinad
well first of all it would be a hella of a lot of work and second i really dont think it would be worth it. the y-pipe just runs into a single pipe anyway. if you are going to an h-pipe, do a dual system like mine. i never bothered putting an h-pipe in cause i didnt want to deal with the hassle. perhaps in the future i will. but as for the y-pipe i really dont think it would make any difference.
well first of all it would be a hella of a lot of work and second i really dont think it would be worth it. the y-pipe just runs into a single pipe anyway. if you are going to an h-pipe, do a dual system like mine. i never bothered putting an h-pipe in cause i didnt want to deal with the hassle. perhaps in the future i will. but as for the y-pipe i really dont think it would make any difference.
RP.
Supreme Member
Joined: Oct 2001
Posts: 1,761
Likes: 0
From: Ailsa Craig, Ontario, Canada
Car: 84 Trans Am
Engine: 350
Transmission: 700r4
https://www.thirdgen.org/techbb2/sho...w+dual+exhaust
thats the link. i have since changed the tips on the mufflers and they go straight back...they are short like 6 inches
thats the link. i have since changed the tips on the mufflers and they go straight back...they are short like 6 inches
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Palric... SLP sells a 3" mandrel Y-Pipe... I'd get that man.. its stainless. www.slpeng.com
Supreme Member
Joined: Feb 2000
Posts: 3,145
Likes: 1
From: Kemptville, Ontario, Canada
Car: 1992 Z28
Engine: 355
Transmission: 700R4
A cross over before the 2-into-1 junction would be pointless. The pulses equalize when they converge into the single pipe.
Just as an FYI.........SLP's y is not the one they sell with the headers.
Who's exhaust is that? It's allmost as ghetto rigged as mine.
Just as an FYI.........SLP's y is not the one they sell with the headers.
Who's exhaust is that? It's allmost as ghetto rigged as mine.
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