SuperchargedRS

I was thinking,
If I wanted to go with 3inch pipes, could I use oval like piping to allow max round clearance, I know I would have to fab a adapter to each end, but if the piece had the same internal area....
Any thoughts on this?

iceman02

iTrader: (1)

First off, if you can fab and adapter, that would be the route to go. Dr. Gas makes some transitions from oval to round, but they are pricey. They also make some 3" oval tubing that is expensive, but I could justify using it since if you're trying to run duals on our cars, you are quite limited on ground clearance. Actually, check out spintech's website under accesories and they have oval tubing and transitions, too, and the price is a bit cheaper. It's just that the transitions cost so much..... about $30 a piece. So if you're going into oval and then back into round, you're gonna need 4 transitions if you're looking at duals. You're best bet would to be to go into oval and stay with oval if you don't need any bend (cause those are expensive too at $60 per elbow). But then what do you do about mufflers???? Buy ones with oval in and out I guess... they sell those too. I currently have one of their 2 1/4 inch thick mufflers and plan on buying another one and mounting one under the driver's floorpan and the other under the pax floorpan and just dumping them there. It will probably give quite a lot of interior noise and I'll keep my full system on hand to swap back for inspections. If the interior noise is too much, I'll consider going to oval after the mufflers and just running straight back from there a couple of feet. I wonder how hard it is to take a round pipe, heat it up and pound it into an oval. Probably not hard at all, but it might be a SOB getting it to match up with the oval tubing.

SuperchargedRS

I plan on using a 600cu engine [so I will need to do some fab work anyway, I was thinking going with the edelbrock victor jr titanium mufflers, or those quiet stelthy ones by borla [i think it was borla].

This is what I am thinking of as far as my template, but with "O" ring connections at the muffler, I am also thinking of having a rubber spacer or hanger to keep some space between the exhaust and the underbody.

SuperchargedRS

...Pic

Air_Adam

I gotta see that when its done!!
This gonna be a street motor? If so, you'd be unstoppable at the "Grand Prix du Stoplight" hehe

onebinky

iTrader: (1)

Like these? I don't remember who makes them, I'll see if I can dig up more info on them. It was VERY pricey though, especially for stainless. They also make some very low profile mufflers, about 2.5" tall if IIRC.

onebinky

iTrader: (1)

another

onebinky

iTrader: (1)

last one

FSTFBDY

iTrader: (33)

do a search for oval exh. and DrGas.

http://www.drgas.com/

SuperchargedRS

Thanks for the links, right now I am in college, so I wont be working on the car (at least really breaking any gound anyway) untill after I get out of the millitary; and I'm only in ROTC right now lol. But the engine is going to require custom headers and alot of other stuff, currently I'm just building the car on paper for the most part.
I still dont know the muffiler I am going to go with, I was looking at this http://www.corsaperf.com/arsctech2.htm .

FIREBIRD7777

ummmm why not just take regular round exhaust and controll squash it, with a homemade jig or something.

Im about to run duels on my car but i wont have a problem with ground clearence at all when im done People will either love or hate my exhaust when im finished. It will be quite diffrent then anything seen before , if all goes well.

Z28GEN3

you run the risk of creasing the pipe if squashed, besides squashing it-it might take an arbor press or something with sufficeint pressure to do it with satisfactory results, plus you would have to have some heavy gauge steel laying around to make a jig, a welder, torch or plasma cutter. bench vise is not gonna work, i tried that once.

88IROC350TPI

I found that the hardest part to get under is the transmission crossmember. I remember seeing some cool piping on Dr. Gas's website called "Frame Clearance Tube" ...I bet you could go under the crossmember using that and then use regular round piping the rest of the way. Full oval exhaust sounds rediculously expensive.

MrDude_1

yea.. they do... but thoes are also stupidly overpriced...


http://www.drgas.com/product.asp?id=10


$130?!!?

FIREBIRD7777

Yeah i was thinking in lines of a press. And if pressure is applied slow , dont think it would crease ? Dont know could be wrong I nerver tried it , if it did then take a torch and heat it up a bit as pressing.

onebinky

iTrader: (1)

We've done it before bith 4" aluminum tubing with an 1/8" sidewall and it worked ok, but I'm not sure how thin wall steel tubing would work. My dad did it on some kind of press at his work, I'll see if I can get some details for you.

MrDude_1

if i was to attempt it, id want to either shove a metal die thru the pipe...possibly with a press

or i would use a set of rollers and roll the pipe thru.. bring them closer together, roll some more, ect. until it flattens out.



i was looking at my TQ arm to trans clearance..... while a round, or even oval pipe wont fit, i could probly weld up a custom shaped section to go thru the crossmember, between the trans and spohn member... it would even clear the DS loop.then i just have the drivers side cross over under the u joint and i can run either duals all the way back, or have them dump into the Y pipe, and just have the cutouts behind the headers.