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Full Version: Making a Sport muffler for a /4 Header
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Aaron Cox
Ok, so i have a eurorace header. 4-1 hits a "turbo" muffler behind the trans and exits out the stock location...

what i would like to do, is make a Sport/GT muffler with the 2 tips and maybe even have the stock third outlet out the stock location... but retain the "bannana" shape

want the look and a gnarly sound, but can i make it work and look ok with a header system?

so i guess i would need a stock 4 or 6 or 911 bannana to gut.. and then weld up the inputs and weld a single 2.5" inlet from the collector?


your thoughts?

would look cool, may offer a bit of performance (uncork the sport pipes/cap em on the street), and hopefully sound cool.

Opinions welcomed.


-This look-
IPB Image
with this style /4 header system
IPB Image
Twystd1
Yes
sixnotfour
use a sc , carrera muffler single inlet /outlet, Flip it so the inlet/outlet is on the right (for your header) Do the uppfixxin sport mod .....done.
Aaron Cox
fountit - unfortunately the SC/Carrerra mufflers are waaaay different.

IPB Image
VegasRacer
QUOTE(Aaron Cox @ Nov 11 2006, 07:39 PM) *
Opinions welcomed.


Throw away your orange ear plugs and get a pair of these - wink.gif

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*(you'll look cool - chicks will dig it)
JPB
Sorry for the post deletion since it was not what you asked for and would have put me in a "Post Hijacking Hoe" catagory. Assuming noone has labeled me that yet biggrin.gif

boldblue.gif boldblue.gif Just to be ahead of the bitchers and complainers.

I like the exhaust idea thumb3d.gif
i love porsche
crazy..i want to do the exact same thing with my car....post pictures of how you do everything please
Joe Bob
Why bother?

Just unbolt it and attach a Supertrapp on the end.....looks like a big schlong....when the Betty's inquire, you simply say....mine's the same size.....

Then they'll ask....do ya have Mike's phone number?????
Aaron Cox
ok- winter break is here... project time...
this is easily doable.....

so i got a FREE + shipping deal on an SC muffler....
here is the lovely peach ....err.... surgery victim

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i found a thread on gutting SC/Carerra Mufflers on Pelican.

this is what they do...

open it up. remove center bulkead and baffles....
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and here is a view from each end...
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the gutted center section
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Aaron Cox
then all i gotta do is make the 2 center exits... and im inbusiness....


should start on it this week... tempted to go cut it open right now
xitspd
MK muffler will build you anything you want in stainless. I am having a GT type (Dual Outlet) build for my car as we speak. Contact Dave B. at TRE Motorsports. I will email you pics when I get the car back.

Take care,

Dan
Aaron Cox
that takes all the fun out if it dan!

just bored without a project - and this seems like a no brainer.. smile.gif

how you been man?

AA
i love porsche
good thread...im going to have to bookmark this for further use...what are you going to do about the outlet pipes?

i think that megaphone outlets would look sick...
Aaron Cox
i was gonna do twin 2" pipe.... about 6" or so long....

ive seen the megaphone idea done before.... not sure its my thing
So.Cal.914
Aaron will that not be as loud as LAX,,, not that I mind.
Aaron Cox
PROGRESS!

so today the bannaner went under the knife...

my internals were a bit different then the pelican article seen here-
http://forums.pelicanparts.com/showthread....threadid=181627

my nanner is from an SC and is about the same as a carerra...

so i opened it up.... what a PITA the spotwelds were (6 of em) about 5/8" diameter...
pilot hole kept wandering.... so i had to use a 1" hole saw.... (get to weld up those holes later....)

bgean cutting.
you can see the big ol holes to drill out the bulkhead spotwelds....
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so the top was open now take out the innards....
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went thru 4 cutting discs, 3 sawzall blades and some hammer and chisel work to remove it all.... took a few hrs..... wish i had a torch...

a view into each side....
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Aaron Cox
just a remock up to make sure the shape hasnt changed....
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now in this pic.. you can see where the outlet of the header is on the opposite side of the car...the inlet will have to be relocated...
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chop chop the inlet. will be capped.... and relocated....
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i will post a schematic of how i plan to mount/hang it off the trans, and where the inlet will be plumbed...
seanery
lookin' cool Aaaaaaaaaaaaaron.
Joe Bob
Nothing a SUPER Sawzall couldn't have fixed in a minute or two......
DanT
how does the weight compare?

by getting rid of a full bodied turbo muffler and the pipes, I would think it might be a bit lighter. smile.gif

I will be interested in seeing how this turns out. I might try one myself...

I have a super light muffler for tracks where sound is not a problem...
nebreitling
i like that, dan -- you ought to weld it up.
DanT
QUOTE(nebreitling @ Dec 10 2006, 05:55 PM) *

i like that, dan -- you ought to weld it up.



It is already to go...bolts right up to my header and the bracket bolts to the rear of the tranny....it is LOUD biggrin.gif
xitspd
Aaron,

I love your projects, "they make me feel young again." I am doing fine. Do you remember the the car attached from the Ventura show?

Dan
Aaron Cox
hey dan -

glad to hear you are doing fine! thanks for the compliments....

that car was stunning!!! a beast like yours!!!
Heeltoe914
Aaron looks great hope you get the SOUND you wont. FYI your local If you ever need to cut like that again Come up and use my Plasma cutter and welders. Same for any 914 owner in So cal.
I love the sound of mine.
Aaron Cox
right on! if i am ever in the area, i will hit you up. (leamon right?)

BTW - how much por 20 to paint this bad boy when im done?
Twystd1
AA,

I am loving this thread.....

I believe the Jakester tested sumpin like this and gave it high marks.

Oh..... And dan..... Sorry about the drool marks on your windsheild at Ventura......
It just happens..... When I see your ride......

You just happen to own my dream car...............

Clayton
Heeltoe914
QUOTE(Aaron Cox @ Dec 10 2006, 06:15 PM) *

right on! if i am ever in the area, i will hit you up. (leamon right?)

BTW - how much por 20 to paint this bad boy when im done?


Correct thumb3d.gif
Eric_Shea
Looking good bud.

Excellent idea.
Aaron Cox
BTW - anyone have flange dimensions for the euro race? i dont recall the dimensions and i have to have a flange made up (i remember i got the gaskets at the v8 shop)

BTW2 - how much por 20 do i need to paint this thing?
DanT
QUOTE(Aaron Cox @ Dec 10 2006, 06:23 PM) *

BTW - anyone have flange dimensions for the euro race? i dont recall the dimensions and i have to have a flange made up (i remember i got the gaskets at the v8 shop)

BTW2 - how much por 20 do i need to paint this thing?


Aaron,
the header flange on my setup is 3 bolt 3" centers. Pipe diameter is 2 inch.
And I got gaskets at flaps from MR. Gasket that work fine.

Aaron Cox
thanks dan!
DanT
QUOTE(Aaron Cox @ Dec 10 2006, 07:16 PM) *

thanks dan!



No problem, Aaron.

keep us posted, I want to build one. biggrin.gif
Aaron Cox
woohoo.. more progress.

2.25" OD J bend (4" radius) from Jegs.com came today, along with a section of 2.25" OD straight tubing.....
got a flange from the muffler shop (2.5" ID sad.gif )

ready to weld!!!

here is the plan!
Eric_Shea
Paint's on the way Biatch tongue.gif

Merry Christmas wink.gif
Aaron Cox
woohoo!

cant wait to weld this bitch up... and paint it with POR 20...

wub.gif eric
grasshopper
Now Eric...dont tell me you get it from Aaron too! Gahh.... gayfight.gif
Eric_Shea
Dude... what don't you get about

Me=Stud

confused24.gif
Aaron Cox
but wait! there is more! LOL

spent all afternoon with craig downs trying to weld this bad boy up...

HUGE thanks to craig for all the help today (and tomorrow) aktion035.gif rocking nana.gif smiley_notworthy.gif

we got most of it done today.... another 2 holes/2 pipes to do... and weld the top on....

starting to make the input hole from the collector smile.gif
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Aaron Cox
finished hole...
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with the mandrel bend...
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Aaron Cox
craig spent most of the day welding in patches for the drilled out spotwelds...

metal was real thin.. and proved to be a PITA!
he had to go from mig to gas welding.
Aaron Cox
before finishwelding the input pipe...
Aaron Cox
grinders are your friend!

my feeble attempt at welding up the original inlet hole.

pre-grinding.
Crazyhippy
Now that's talent... i've never seen a dog shit in a circle... did you teach him that yourself?

Just ribbing the welds. Progress looks good

BJH
Aaron Cox
BJ - laptop cleanup bill heading your way.. (snot removal from laughing so hard!)

more progress!

taking shape!
Aaron Cox
more!
Aaron Cox
craig is da man! spent another hlaf day with me on this.
we got all but the connection pipe between the collector and the new muffler done, and we made up a mount for the tranny....

we had his miller on the lowest setting and kept having hole issues... craig suggested we let his friend tig it up smile.gif

thanks again craig!
Aaron Cox
last one for today!
Eric_Shea
QUOTE
we had his miller on the lowest setting and kept having hole issues


That's weird. I read that in a post earlier as well... thin? My 911 muffler was something like 4-6 ply stainless. We just buzzed away at it with the MIG. No issues. confused24.gif
seanery
your neighbors are gonna hate you! laugh.gif Jumpy.gif w00t2.gif w00t1.gif
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