Making My Own Exhaust System

[2FAST4U]

Since my build is somewhat a one-off using a highly modified Mk4 frame and a Bruce C 289FIA body, there aren't any off the shelf exhaust systems I can use. SO I am building my own and using CSX 2430 as my source. CSX 2430 isn't an FIA and it uses a hybrid exhaust system. It has sidepipes similar to a 427 S/C. The differences are slight.

I began my accumulating some parts:

Merge collectors (Dynotech, P/N 783-21230)
3" straight tubing (Summit Racing, P/N SUM-640030-1)
Car Chemistry 3", 3 disc inserts (Car Chemistry, P/N 3DI03R)
Coarse steel wool packing (Burns Stainless, P/N ??)
90 deg 3" elbows (Patriot Performance, P/N H7062)
1.625 mandrel bends (SPD, P/N 316325-16 and 316340-16)
Header flanges with stubs (Hedman Hedders, P/N 11288)

Here is a rough mockup of what they will look like once I have the car and can measure for the correct length

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg5_zpsbce63db1.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg5_zpsbce63db1.jpg.html)

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg1_zpsaceb4d31.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg1_zpsaceb4d31.jpg.html)

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg2_zps2a098b39.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg2_zps2a098b39.jpg.html)

Until the car gets here I can't weld the collector to the straight tube or mock up the primary pipes. But tonight I did weld the Car Chemistry Inserts wrapped in coarse steel wool into the collectors. Then filed the welds smooth

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg1_zpscbe246cc.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg1_zpscbe246cc.jpg.html)

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg1_zps87c8c7ae.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg1_zps87c8c7ae.jpg.html)

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg6_zps01b46678.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg6_zps01b46678.jpg.html)

[first time builder]

How did you know how many disc's to use ?

Kenny

[2FAST4U]

It's based on how quiet you want it. My last Roadster gave me headaches after long drives. I want this one to be quieter yet not rob too much hp

[skullandbones]

So will the side pipes be slightly tucked under the body but still showing? Will it be like a lake pipe exit at the front of the rear wheel? I can't see that big pipe fitting under the body like a conventional exhaust. It looks like it's going to be a very clean looking system with few restricitions, though. Good luck, WEK.

[2FAST4U]

Here is CSX 2430 showing the sidepipes. Mine will be like this

http://i23.photobucket.com/albums/b373/GT40_Bill/csx2430.jpg (http://s23.photobucket.com/user/GT40_Bill/media/csx2430.jpg.html)

[2FAST4U]

Welded the straight tube to the 90 deg turnout. Once the car arrives I can mock everything up and cut to length and trim the turnout

http://i23.photobucket.com/albums/b373/GT40_Bill/imagejpg1_zps0cfd4549.jpg (http://s23.photobucket.com/user/GT40_Bill/media/imagejpg1_zps0cfd4549.jpg.html)

[FFR7434]

Beautiful work.