The "Y Pipe" - a flawed design?
Also you need to remember that the further downstream the exhaust gases go the more they cool off and condense, thus requiring less space than they would coming right out of the collectors. Granted the exhaust gas will still be hot but not nearly as hot as when it exits the head and makes the short trip down the header. Im not trying to state that one is better than the other or start an arguement just pointing that out.
After a few more discussions with American Racing Headers and Mufflex, I've decided to go with a 3.5" merge and catback...
So, the headers, y pipe and catback are all on order... I'll have a full write-up with pictures, etc as soon as it's all installed...
I can't wait!
Good point. Thanks for the input...
After a few more discussions with American Racing Headers and Mufflex, I've decided to go with a 3.5" merge and catback...
So, the headers, y pipe and catback are all on order... I'll have a full write-up with pictures, etc as soon as it's all installed...
I can't wait!
After a few more discussions with American Racing Headers and Mufflex, I've decided to go with a 3.5" merge and catback...
So, the headers, y pipe and catback are all on order... I'll have a full write-up with pictures, etc as soon as it's all installed...
I can't wait!
They have always been a Magnaflow dealer. But since people only saw Spintech or Flowmaster as an option, those became the most popular ones used. They'll use what ever muffler you want.
Your paying a pretty penny for that exhaust!
I saw a set of ARH 1 7/8 stepped to 2" into 3.5" collector, then 3.5" Y that after the hvmc in the Y it went right into a 4" pipe. This is going to a 4" cut out and back to a 3.5 inch cat back. the 4" pipe actually deepens the exhaust note, and takes any rasp it might have out. Cut-out sounds mean too.
All stainless. It was absolutely the best work I've ever seen.
I saw a set of ARH 1 7/8 stepped to 2" into 3.5" collector, then 3.5" Y that after the hvmc in the Y it went right into a 4" pipe. This is going to a 4" cut out and back to a 3.5 inch cat back. the 4" pipe actually deepens the exhaust note, and takes any rasp it might have out. Cut-out sounds mean too.
All stainless. It was absolutely the best work I've ever seen.
Denny mentioned that the fitment is better with this muffler over the round Magnaflow....
Your paying a pretty penny for that exhaust!
I saw a set of ARH 1 7/8 stepped to 2" into 3.5" collector, then 3.5" Y that after the hvmc in the Y it went right into a 4" pipe. This is going to a 4" cut out and back to a 3.5 inch cat back. the 4" pipe actually deepens the exhaust note, and takes any rasp it might have out. Cut-out sounds mean too.
All stainless. It was absolutely the best work I've ever seen.
I saw a set of ARH 1 7/8 stepped to 2" into 3.5" collector, then 3.5" Y that after the hvmc in the Y it went right into a 4" pipe. This is going to a 4" cut out and back to a 3.5 inch cat back. the 4" pipe actually deepens the exhaust note, and takes any rasp it might have out. Cut-out sounds mean too.
All stainless. It was absolutely the best work I've ever seen.
I'm going with the 1-3/4" primary w/ 3" collector, dual 3" catted y pipe to 3.5" merge, 3.5" catback...
I sure hope my car sounds great and goes faster...
And I agree that American Racing Headers makes some great looking stuff...and no it's not cheap, but you get what you pay for...
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Keep in mind that I am no mechanical engineer, and certainly not a seasoned exhaust designer/fabricator... but here is a GENERAL idea as to the surface area of each of these pipes/setups:
Single 4" pipe = 12.56 sq. in.
Dual 2.5" pipes = 9.81 sq. in.
Dual 3" pipes = 14.13 sq. in.
So with this being said, the dual 3" setup has marginally more surface area than a single 4". But, do not let this mislead as I'm sure there are many other factors that affect the end result - horsepower.
Single 4" pipe = 12.56 sq. in.
Dual 2.5" pipes = 9.81 sq. in.
Dual 3" pipes = 14.13 sq. in.
So with this being said, the dual 3" setup has marginally more surface area than a single 4". But, do not let this mislead as I'm sure there are many other factors that affect the end result - horsepower.
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Very interesting discussion, and indepth, so I hope you guys don't mind a n00b-ish question, but, don't most Y-pipes connect on the side of the car (rather than the center)? Wouldn't that lead to un-evenness between the 2 sides of the engine (as one side has a shorter, straighter path than the other)?
Or is it just so minute it's insignificant?
Or is it just so minute it's insignificant?
But we're talking about air and a smooth pipe surface, so I'm not sure this is a valid argument...
But, I'm always open to learning more if you have more info to back it up...
Thanks
Last edited by ATLSS; Jan 10, 2008 at 05:33 PM.
Very interesting discussion, and indepth, so I hope you guys don't mind a n00b-ish question, but, don't most Y-pipes connect on the side of the car (rather than the center)? Wouldn't that lead to un-evenness between the 2 sides of the engine (as one side has a shorter, straighter path than the other)?
Or is it just so minute it's insignificant?
Or is it just so minute it's insignificant?
Someone correct me if I'm wrong please.
If I'm not mistaken, the y pipes are fairly close in length and meet together near the center of the car... so I'm not sure that the difference in length (which may be none or very little) has any affect on performance one way or another...
Someone correct me if I'm wrong please.
Someone correct me if I'm wrong please.
I thought he used a flowmaster merge?
https://ls1tech.com/forums/generation-iii-internal-engine/732392-recipe-500-rwhp-heads-cam.html
https://ls1tech.com/forums/generation-iii-internal-engine/732392-recipe-500-rwhp-heads-cam.html
TECH Addict
Joined: Nov 2005
Posts: 2,379
Likes: 2
I'd check around for a muffler shop that can do true duals, even though I live up in Canada now, I was able to find a shop that did my stainless steel true dual mandrel bent 2.5 inch over the axle mufflers from cats to tips for $400. I provided the mufflers and tips.
So it doesn't hurt to ask around. At some shops I was quoted as high as $1400 to do the same damn thing.
If you do go the y-pipe route, the merge of the y is key. You need to merge it in such a way that the pulses don't interfere with each other. The key to this is to merge them in such a way that one pipe is not significantly longer than the other when they meet. Second is to use a merge similar to that by flowmaster. Minimize the bends as much as possible as well. The shorter the path out, the better.
So it doesn't hurt to ask around. At some shops I was quoted as high as $1400 to do the same damn thing.
If you do go the y-pipe route, the merge of the y is key. You need to merge it in such a way that the pulses don't interfere with each other. The key to this is to merge them in such a way that one pipe is not significantly longer than the other when they meet. Second is to use a merge similar to that by flowmaster. Minimize the bends as much as possible as well. The shorter the path out, the better.