How much pipe (length) for a custom exhaust?
Looking to build my own - how much pipe did others who have buy, and how many bends?
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I cut a whole and made it exit through the drivers side. Had to buy very little piping and I got my bends done by a local pipe bending shop. I think I got 4 feet and it turned out to be way too much.
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I haven't done my own, I saw one guy who had built his own use 2 90*s, one at the muffler going back and the other coming out the muffler going out the back.
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I made my DP and full exhaust using 2 U-bends and 1 4' straight pipe along with a Summit Racing Turbo muffler. The U-bends were from JC Whitney so they had quite long legs.
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lets see... turbo back following the stock system looks like:
90° for the outlet (smaller diam + reducer) 90° for the bottom of the downpipe 15° for a kink at the tranny 6-8" of straight from there to the cat 18 inches of straight for the cat 6-8" of straight from there to the kink another 15° for another kink half way back 6-8" of straight from the kink to the resonator 18 inches of straight for the resonator a few more straight inches to the diff about 45° and 8" for the kinks at the diff 90° to exit the diff space 180° U to turn around to go into the muffler whatever you use for the muffler and a 90° to exit the muffler a shiny chrome tip the size of a grapefruit. I think I used 3x 3" U bends, a 2-1/4 90° for the turbine outlet, a 2-1/4 to 3" reducer, a 3" 90° for the muffler outlet, a 3" cat, 3" "bullet race" resonator, 3" magnaflow muffler, and 3 feet of straight pipe (give or take). plus the tip. there's enough straight on the U bends to fill in the rest of the straight space but extra straight pipe is cheap and easier because it's not squashed from bending. |
well i just ordered a 3" catalytic converter, 3" dynomax bullet for a resonator, Summit Turbo muffler, and a mandrel u bend from summit. I will probably just take it to a shop and have them weld it up for me. My current exhaust is 2.5" with just a cat and a glasspack and gets a bit annoying sometimes so im hoping for a little quieter as well as betta flows and maybe better boost control as well. I aint trippin off the flows.
oh i forgot to mention that I am still running a stock size cat which has got to be killing the flow. |
I'll have some 3" SS pipe for sale - I bought 18' for my exhaust... you know I didn't want to end up not having enough. :D OVERKILL
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www.muscleexhaust.com has great prices on Magnaflow stuff which is usually very quiet.
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I like to lay a lot of pipe.
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3 Attachment(s)
^ me too.
oh wait, heres my 3" exhaust. never measured it, but maybe this will give u some reference. Attachment 216017 Attachment 216018 mated to the turbo tony dp. lol Attachment 216019 |
Originally Posted by Wideopentuning
(Post 141191)
www.muscleexhaust.com has great prices on Magnaflow stuff which is usually very quiet.
Also, I bought a 5' section of straight, 3 or 4 90's, and I think a couple of 45's. All those gave me enough pipe and some leftover. |
1 Attachment(s)
Considering the car has been boosted and running for a few months now, the how much pipe for an exhaust is (for me) a mute point.....
However for interest sake, a mate of mine who does good steel work put this little system together for me.....:bigtu: Attachment 216016 It's sitting very low in this pic, and has (long) since been reworked to sit higher, and the join has been brought back to right before the 90 deg bend into the muffler. |
Hawt. I liek ur welds.
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Thanks for the pictures guys, i am sure they will help quite a bit.
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what turbo muffler from summit do you recommend?...does any body know if the turbo muffler sounds good?
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Another good question, IMHO; how much did everyone spend on said exhausts?
I'm debating whether to go custom or buy an Enthuza. |
You can usually do a nice stainless system that uses Magnaflow(I always use a cat, big ass reso and a muffler) stuff and v bands for around $400-$600.
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For my 3" exhausts:
Vibrant pieces: One 5' chunk of pipe, one metalcore cat, one J-bend. Add Magnaflow muffler size to taste. |
J-bend = 180* U bend? Or is it different?
Did you have to bend the 5' length at all or just run it from the cat to half the J-bend, into muffler, and then use the rest of the J-bend to route from muffler to exit? |
those estimates sound about right.
though if you want to save some coin, you dont need stainless pipe beyond the dp. it's nice, but aluminized will last a long time. I recommend the magnaflow universal stainless (polished or brushed) in 4x9" by as long as you can fit. I have the 5x11x22 and it's real nice. and long. |
you have that muffler sitting "transverse" under the trunk, correct y8s?
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It looks like its going to end up costing me about 220 including 3" cat, resonator, and muffler altogether. If I cut the cat and the resonator from the equation, I would be saving myself over a hundred bucks. However I dont wanna mess with my exhaust when I go to smog the car this next april, I should have enough issues for that as it is.
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Originally Posted by kotomile
(Post 141656)
you have that muffler sitting "transverse" under the trunk, correct y8s?
http://gallery.y8s.com/d/234-3/DSC01748.jpg |
Originally Posted by kotomile
(Post 141629)
J-bend = 180* U bend? Or is it different?
Did you have to bend the 5' length at all or just run it from the cat to half the J-bend, into muffler, and then use the rest of the J-bend to route from muffler to exit? Umm...I use about 1 foot after the cat, to a slight bend, to some more feet, to a few fancy twists, to the muffler, then the tail pipe. I'm pretty sure I use the entire 180 bend out by the muffler, and a section of the 45 bend half way between the muffler and the cat. My downpipe goes pretty far back. This is all 3 inch. Smaller pipes could be done easier, and aluminized does last a very, very, very long time and welds very easily. I tried to fit Y8S' 5x11x22 in there but couldn't figure it out :vash: Fortunately the 5x8x18 (canister size, not overall) with no resonator is relatively quiet. Pics of my car, 5x8x11 magnaflow: http://www.shoremotorsports.com/pics...strearview.jpg http://www.shoremotorsports.com/pics.../Exhausts1.jpg Pics of friend's MSM, 4x9x11 magnaflow (he wanted his a little louder): http://www.shoremotorsports.com/pics...smexhaust1.jpg http://www.shoremotorsports.com/pics...smexhaust2.jpg |
Originally Posted by TurboTim
(Post 141764)
I tried to fit Y8S' 5x11x22 in there but couldn't figure it out :vash: Fortunately the 5x8x18 (canister size, not overall) with no resonator is relatively quiet.
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im looking for something like that turbo tim...how much an exhaust system shipped to the west coast?
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hmmm, this is making me think my 6x14 magnaflow might not be big enough to give me a quiet sound at cruise. Maybe I should pick up a resonator.
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resonator ftw. it did wonders for my exhaust leak proned NA car :)
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For turbotim, since your pm box is full ...
I was wondering if I could buy a couple things off of you through shore ... I basically just need a few things for my exhaust im going to weld up in a few weeks. I will need two 3" 2 or 3 bolt flanges and a 2.5"-3" 2 bolt pattern with adjustable bolt spacing to mate up to my begi downpipe ... or if you know the bolt spacing, a matching flange would be just fine. Then I need a few weld on hangers. Also if it wouldnt be too expensive, a few non-mandrel bent 30-45* 3" bends to do the first part of the pipe (I bought a mandrel U bend to do the 90* turns, but thought it overkill for the smaller bends). Also, i know it might be a long shot but I am also looking for a 2" 90* silicone coupler and some tbolt clamps. |
Originally Posted by kotomile
(Post 141584)
Another good question, IMHO; how much did everyone spend on said exhausts?
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Originally Posted by o.e.boost
(Post 141901)
im looking for something like that turbo tim...how much an exhaust system shipped to the west coast?
About $900 to ship your car to the east coast, another ~$800 for the exhaust installed, and another $900 to ship it back to the west coast. :td: |
Originally Posted by akaryrye
(Post 141936)
For turbotim, since your pm box is full ...
sorry for using a thread for this, but at least it is relevant :D |
Originally Posted by y8s
(Post 98413)
lets see... turbo back following the stock system looks like:
90° for the outlet (smaller diam + reducer) 90° for the bottom of the downpipe 15° for a kink at the tranny 6-8" of straight from there to the cat 18 inches of straight for the cat 6-8" of straight from there to the kink another 15° for another kink half way back 6-8" of straight from the kink to the resonator 18 inches of straight for the resonator a few more straight inches to the diff about 45° and 8" for the kinks at the diff 90° to exit the diff space 180° U to turn around to go into the muffler whatever you use for the muffler and a 90° to exit the muffler a shiny chrome tip the size of a grapefruit. I think I used 3x 3" U bends, a 2-1/4 90° for the turbine outlet, a 2-1/4 to 3" reducer, a 3" 90° for the muffler outlet, a 3" cat, 3" "bullet race" resonator, 3" magnaflow muffler, and 3 feet of straight pipe (give or take). plus the tip. there's enough straight on the U bends to fill in the rest of the straight space but extra straight pipe is cheap and easier because it's not squashed from bending. |
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