i need 3", sections of oval tubing

thanks

 

You can also get an exhaust shop to just take 3" round pipe and pinch it.

 

you've told me that before john and maybe i should go aske them to demonstrate it for me...i just dont see the bends that they "pinch" being equal to the spintech oval....but i've never seen them do it so i can be very wrong here

the exhaust on my car is going to be VERY important as to my power output and i would like to keep it as un-restrictive as possible

who is your buddy at iggy's again? i know the owners pretty well but none of the mechanics

The other part would be how much it would cost for them to take some straight 3" piping and pinch it compared to what i could order straight from Spintech (40" of 3" oval for $31)

<small>[ May 01, 2002, 02:36 PM: Message edited by: JimmyKash ]</small>

 

spintech is the only oval I've found

 

thanks john

 

I will do some digging tonight and try to find the name. There is a place just off LaGrange Road (Mannhiem sp?)about 20 minutes north of LaGrange. I bought 3 inch round to oval transitions, and both 3 inch oval and round bends in different angles. As soon as I find it or remember, I'll post the name. The price wasn't bad. 4 transistions, 4 45 degree oval bends, 2 60 degree round bends for about $250. It was about 3 years ago.

 

I'd go by and talk to Pete or Danny. They say my exhaust and said they could replicate it.

 

thanks....is it one of the spintech's distributors?

i know there is one in schaumburg called midwest speed i think

 

I haven't found it yet. But, it definately wasn't in schaumburg. I found the place by calling Burn Stainless out in California. They recommended this place for oval tubing. They both steal and stainless here. I'll find it!!! Sorry it's taking so long.

 

thank you for going through the trouble <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Pinching 3" round tube will reduce its cross-section, reducing flow. That's not what you want, I don't think.

I looked at spin-tech as well, but found the prices too much for my modest budget. So I made my own. I ordered 1.75" J-bends from Jegs. Then I sliced it in half, and put in a strip of 3.25 inch wide 16 gauge sheet metal, and welded it all together. Presto, inexpensive oval tubing.

John Parsons

 

thats a good idea with the cutting the tubing in half, but i cant weld

it would be faster/cheaper for me to just use the 40" of 3" ovalized pipe for $30

 

I found the information! The company is located in Melrose Park. I don't know if I can post the name since they aren't a sponsor so I'll email it to you. The dimensions of the 3 inch oval are 2 1/4 x 3 1/2. I don't think you'll have any problems with flow. I used the pieces I got and made a true dual exhaust off some hooker super comps with homemade x-pipe and Borla XR-1's. The lowest part of the exhaust was the collectors. And the car sounded great dumping at the rear axel with turn downs.

 

You're THE MAN! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

You have any pictures of that exhaust by chance?

i dont think im going to spend the dough for the borlas....i'm just going to use some dynomax round ultraflows

thanks for all your help

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 84racebird:
<strong>I found the information! The company is located in Melrose Park. I don't know if I can post the name since they aren't a sponsor so </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">hehe.. You can post the name of the company, even contact information.

Only "grey" area is when comparing prices on products in direct competition with our sponsors.

 

Oh, then here it is.

Boyce Industries
(708) 345-0455

 

I used the word pinched to illustrate.

My pipe was made by our sponsor Billingsley Racing.

 

Here's a picture of the system I did. It was on my '84 Firebird.

<img src="http://netsnapshot.com/users/6492/images/th_PNao2sCoBQIAAEdZ8sM_6492_9.jpg" alt="" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">I used the word pinched to illustrate.
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That's cool. Probably the thing to do if you are going to pinch round tubing to make oval is to use larger round tubing to start with. I'd guess starting with 3.5 round tubing would allow a decent amount of pinch before you end up with less cross-sectional area than the desired 3" round tube.

The area of 3" round tube is pi r squared. It's circumference is about 9.4 inches and its area is 7.1 square inches. The area of oval tubing is pi r squared + w * 2r, where w is the width of the parallel tubing between the round ends, and r is the radius of the round ends. Using my 1.75 diameter above, to achieve the same cross-sectional area as 3 inch round tube: w = (7.1 - pi r squared) / 2 r = 2.9

The outer circumference of this oval tube is 2r pi + 2w = 11.3 inches, nearly 2 inches more than 3 inch round tube. The outer circumference of 3.5 inch round tube is 11.0 inches, pretty close to the circumference of my 1.75 x 4.65 oval tube. So you could pinch 3.5 inch round tube quite a bit and still have the cross-sectional area of 3 inch tube.

Dunno if any of you enjoyed this discussion ... but I thought it was fun <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

John Parsons

 

ok, so you're telling me to get 3.5" oval tubing because the 3" oval doesn't act like 3" round?

i'd like the flow of 3" round but in oval

thanks