Author Topic: Performance exhaust  (Read 4229 times)

February 16, 2012, 03:27:46 pm

shwak23

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Performance exhaust
« on: February 16, 2012, 03:27:46 pm »
Does anyone here make their own exhaust? I plan on just making mine exit out the side unless I can figure out how to make an over the axle piece. Would anyone have any idea on how to make that piece?

I plan on making it 3inch stainless all the way back.

Sent from my DROID X2



Reply #1February 16, 2012, 04:55:19 pm

ORCoaster

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Re: Performance exhaust
« Reply #1 on: February 16, 2012, 04:55:19 pm »
Mandrel bender

Reply #2February 16, 2012, 07:34:25 pm

Blocksmith

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Re: Performance exhaust
« Reply #2 on: February 16, 2012, 07:34:25 pm »
Mandrel bender

Yep, I just used some J bends from ebay; cut to fit. Though, I can personally recommend using something other than a hacksaw... ::)
Green 83 Rabbit 4dr, 5 speed ACH trans swap, ported 1.6D mech lifter w/ vnt15, na pump w/ gov mod, gasser intake mani, 2.5" exhaust, bilstein sports and cut mk2 springs, ss brake lines, 14" vw bottlecaps

Reply #3February 16, 2012, 07:37:14 pm

8v-of-fury

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Re: Performance exhaust
« Reply #3 on: February 16, 2012, 07:37:14 pm »
What kind of car, I think you will find 3 inch will be a little tight over the axle.

Reply #4February 16, 2012, 08:07:46 pm

bajacalal

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Re: Performance exhaust
« Reply #4 on: February 16, 2012, 08:07:46 pm »
2.5" fits. It doesn't have to be mandrel bent tubing but that is better I guess and probably a good option if you don't have a tubing bender.

Reply #5February 16, 2012, 08:40:06 pm

bgbmxer

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Re: Performance exhaust
« Reply #5 on: February 16, 2012, 08:40:06 pm »
3 inch is good to like what over 300 horse flow wise. might be overkill and if your doing stainless that means ur capable of welding it correct? if you are look up a site called columbia river mandrel bends and buy the bends you need cut and weld them together. thats what i did for my downpipe.

Reply #6February 16, 2012, 10:09:48 pm

shwak23

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Re: Re: Performance exhaust
« Reply #6 on: February 16, 2012, 10:09:48 pm »
Well I have a 3" downpipe. I figured I may as well go 3" all the way back.

 I mean money grows on trees right?

And yes obviously stainless is more difficult to weld. I have the resources to have it done.

3" over the axle should fit fine. Lots of examples on the vortex. Some even with 4" turbo back vrt's.

Supposedly the over the axle part is a pretty complex 3d Part. I will probably just run it out the side because I am lazy but I think that will be way too loud.

Would it cause much back pressure to have the exhaust. Shrink down to say a 2.25 mandrel bend over the exhaust?

Sent from my DROID X2

Reply #7February 16, 2012, 10:12:53 pm

shwak23

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Re: Re: Performance exhaust
« Reply #7 on: February 16, 2012, 10:12:53 pm »
Oh and I guess I should have said does anyone have any idea which bends to use. Something easy like to diy down pipe in the faq.

Sent from my DROID X2

Reply #8February 16, 2012, 10:16:47 pm

bgbmxer

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Re: Re: Performance exhaust
« Reply #8 on: February 16, 2012, 10:16:47 pm »
Well I have a 3" downpipe. I figured I may as well go 3" all the way back.

 I mean money grows on trees right?

And yes obviously stainless is more difficult to weld. I have the resources to have it done.

3" over the axle should fit fine. Lots of examples on the vortex. Some even with 4" turbo back vrt's.

Supposedly the over the axle part is a pretty complex 3d Part. I will probably just run it out the side because I am lazy but I think that will be way too loud.

Would it cause much back pressure to have the exhaust. Shrink down to say a 2.25 mandrel bend over the exhaust?

Sent from my DROID X2

If it has been done before then you can run 3 inch the whole way then. It doesn't seem that bad or complex from what I remember Layin under my car doin some of my exhaust. And I loved the side exit on my Shelby charger it was loud but I had a small glass pack to quite it down along with the turbo quieting it down to. No cat

Reply #9February 16, 2012, 10:29:41 pm

shwak23

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Re: Performance exhaust
« Reply #9 on: February 16, 2012, 10:29:41 pm »
I have a 2.25 inch TT exhaust here that i can get the over the axle bends from I suppose. I guess the side exit wouldn't be terrible but it would get my car pretty dirty down the side. I don't really car if it is loud outside the car but I would like to be able to talk and not have to shout when driving down the highway.

Right now with just the 3 inch downpipe ending just at the fire wall it drones pretty loud and pretty much fills my car with exhaust and my air filter needs to be changed like every month.  >:(

I need to do something.  ;D

Reply #10February 16, 2012, 10:35:27 pm

bgbmxer

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Re: Performance exhaust
« Reply #10 on: February 16, 2012, 10:35:27 pm »
Unless ur making stupid power that tectonics should be plenty

Reply #11February 16, 2012, 10:37:20 pm

CRSMP5

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Re: Performance exhaust
« Reply #11 on: February 16, 2012, 10:37:20 pm »
did not see car listed.. BUT j bends, chop saw, tig and V-BAND clamps... trust me on the v bands.. do it after down pipe before flex, then before rear axle so you can take it apart with ease with no leaks..

the v bands will also give you slight twist ability for perfect fit.. in those 2 places..

the issue with side exhaust... 3" of ground clearance... almost need to make it oval... say 1.5" pipe cut in half with say 2.5" sheet connecting them.. else its going to hit.. my 2.5" on the toaster has dents from rocks..

Reply #12February 16, 2012, 10:49:41 pm

shwak23

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Re: Performance exhaust
« Reply #12 on: February 16, 2012, 10:49:41 pm »
Unless ur making stupid power that tectonics should be plenty

I have a stock 1.6td. I am pretty sure i need the full 3inch exhaust. lol

Oh and i have a 1990 GOLF.

Reply #13February 17, 2012, 01:22:44 am

745 turbogreasel

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Re: Performance exhaust
« Reply #13 on: February 17, 2012, 01:22:44 am »



I used a stock Hemi Ram exhaust, some Moroso spiral mufflers, and a cutoff saw.

Reply #14February 17, 2012, 10:55:19 am

R.O.R-2.0

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Re: Performance exhaust
« Reply #14 on: February 17, 2012, 10:55:19 am »
Unless ur making stupid power that tectonics should be plenty

I have a stock 1.6td. I am pretty sure i need the full 3inch exhaust. lol

Oh and i have a 1990 GOLF.

if you have a stock cast downpipe, you could put a 12" exhaust on your engine, and it would perform no better..
92 Jetta GLI - Black, 1.6D w/ GT2056V turbo..
86 GTI - 4 Door, Med Twilight Gray, Tow Machine..
86 Audi Coupe GT - Tornado Red, All Stock.. WRECKED.
89 Toyota 4Runner - Dark Grey Metallic, LIFTED!

Turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.