im thinkin about running the exhaust out through the rockers in front of the rear wheels. car sits really low & it would be tough to get it up over the rear end. whose done it? tips? comments?? any/all help appriciated. thanks.
viper gts coupe did it that way 1st go round. surely it can be done, maybe use rect tubing to get it "flat"?
It's as simple as it sounds. Just cut a hole where you want your exhaust to exit, and run the pipe and tip through it.
your best bet is to weld a larger tubing into the rocker where you want it to come out depending on the car there may be more problems then the rocker to get it out there. any really low car i have done I ran it under the rear end and out the bumper with flanges to unbolt the rear pipes .
1960's NASCAR cars, the ones that were still based on real car parts, had very neat looking through-the-rocker exhausts. Also, if you dig around in the ads in Circle Track magazine, you will find places selling oval exhaust tubing designed to allow big pipes under low racecars. This stuff could look neat just as a side outlet--or could be used to make a complete hidden system in a low car.
A lot depends on the body and frame arrangement. Lots of cars have a perimeter frame right behind the rockers. Others have foot wells that extend down inside of the rockers where the exhaust needs to run. There is a reason that the Corvettes and Cobras had side exhaust. The exhaust crossed the frame up in the front wheel well area and then ran down the rocker panel area. Anything can be done but that is why it's not a common sight. Of course a truck is a different animal. Most of the Nascar frames that I've worked on had a notch in the frame for added clearance.
Heat (and soot) on the paint around the exhaust exit is a consideration. A lot of cars (compe***ion-looking build styles) that run this style of outlet will have a "trim" piece of metal riveted or fastened around the opening. I don't know if they're there to protect the paint or not, but it always looks good. -Brad
i did like SLAG said and went under the rear on my old wagon it was low as hell. they never posed any problems
just cut a hole in the rocker and weld in length of tube the is slightly larger diameter than the planned exhaust (in order to keep structural ingerity if necessary) and run the exhaust out the new hole (play with the angle to see what looks the best...
intersting post, would like to see pics... kinda in the same boat as you... mines low, but not low enough
No pics, just a couple of thoughts: Those X framed GM cars of 58 and later had bodies that could be thought of as semi-unitized. Got a lot of their strength from the driveshaft tunnel and floorpan shape, but because of side impact resistance most of their real strength came from the side sill/rocker areas and how they tied into the cowl and B and/or C pillar areas. Because of this, take the extra time to really get a plan together for how you're going to cut into and reinforce the areas you cut into. Also, don't forget to allow extra vertical clearance for the tailpipe to move up and down as the engine torques. No criticism, just a few thoughts from someone who owned one of these cars for years.
Check this out don't know if would be right for yours but very cool. http://www.jalopyjournal.com/forum/showthread.php?t=5977
It might work. The stock exhaust runs along the notch between the frame and the foot well in the floor pan. The exhaust kicks out toward the wheel well at the rear. You may be able to go behind the foot well and still get out the rocker in front of the rear wheel. When I do something like that, I take a piece of the pipe about a foot long and hold it up to see if it clears everything and where it has to run to get ground clearance. It's all going to depend on the layout of the floor pan in that area. A wagon usually has a different floor pan than a sedan in that area. As said above weld a tube through the inner and outer rocker panels for the pipe to p*** through. I like to use the el-cheapo multi holed all rubber universal exhaust hangers mounted horizontally right as it enters the hole. 2 big sheet metal screws into the inner rocker will hold the pipe centered and eliminate any rattles. The X frame hangers along the frame can be a PITA. A good muffler shop will have "J hook" universal hangers with a rubber block and and a mounting hole already installed.(I love those things) They work horizontally and vertically. Mount the block in the factory holes in the frame with a self-tapping screw then heat and bend the 5/16" rod to weld to the pipe. I like to bend the rod into a saddle for the pipe to lay in and then weld it. Rods welded to the side of the pipe will rip out over time. If your car came with single exhaust the hanger holes will still be there in the same location on the other side of the frame for cars that came equiped with duals. The factory used a self tapping screw don't strip the hole. You can't get a nut on the inside.
Plan on getting to your destination and smelling like a tailpipe, unless your motor is 2004 Toyota hybrid clean...
3/4 of the **** on this site has open pipes, lakes pipes, limefires, zoomies....don't think a pair of pipes dumping waaaaaaaaaay back in the rockers of a wagon are going to do anything... Scot
i could see it being a problem if it dumped behind the front wheels, but i dont think in front of the rear wheels will be bad. thanks everyone.
I'm planning on running an exhaust with a cut-outs through my model A side splash aprons on the coupe. I had the idea of using a buick porthole to trim out the area. Behind the front tire or in front of the rear? not sure.
i've got my exhaust dumping i front of the rear wheel (not through the rocker, under it) no problem with exhaust fumes here.....but i have ripped out the bracket i made a few times
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