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Gentlemen (and Ladies...), I'm looking for a good source of mandrel bent exhaust pipe for a new down-pipe. I want to attempt the fabrication myself and there are no local shops in the area that I can find with a mandrel bender. Any suggestions? I have checked on ebay and jcwhitney, but would like some other options as well.

Mike

Summit Racing, Jegs, etc.

A Google search on "mandrel exhaust components" will give you lots of hits.

You can just use elbows and or U-bends that you cut to the angle you need. I just finished mine this past weekend. Here are some pics.







I agree that a mandrel bender would be much easier and quicker but you would need to do all the fitment on the first one anyway so that you would have the pipe configuration right.

It is really easy to undo and refit tacked up sections that need a couple of degrees adjustment. Mandrel bending doesn't provide you with that. Once you've programmed the pipe shape it's not changing. If it is wrong it just won't fit. Period.

If you're just doing one you would probably be better off welding the elbows.

Great job Greg!

I got every bend I needed from Mandrel Bending Solutions' ebay store. Good stuff.

Nice work on the exhaust, Greg! What resonator is that?

Sweeney wrote:Nice work on the exhaust, Greg! What resonator is that?

That is a Random Technology Cat. The core is 4" diameter and roughly 4" long. All stainless .065 wall housing. It is supposed to flow 620cfm. I am not sure how much that translates to in HP but certain it is more than I need for now.

Here is a picture I took of the inside of the cat.

Beautiful work. I've been shopping for some exhaust components lately. Can you tell me the part number of that muffler? Also are those flares at the end of the pipes?

Lee in Ottawa wrote:Beautiful work. I've been shopping for some exhaust components lately. Can you tell me the part number of that muffler? Also are those flares at the end of the pipes?

Thanks. The magnaflow part # for the muffler is 14249.

The way I designed it is with V-Band flange clamps at the individual sections of pipe. They are really convenient for disassembling and reassembling the exhaust. Also they allow for minor rotational adjustments to help compensate for fabricator (me) error.

You should make those [to sell]!

GregATL wrote:

Sweeney wrote:Nice work on the exhaust, Greg! What resonator is that?

That is a Random Technology Cat. The core is 4" diameter and roughly 4" long. All stainless .065 wall housing. It is supposed to flow 620cfm. I am not sure how much that translates to in HP but certain it is more than I need for now.

Great work Greg! 620cfm translates into ~ 400 HP - give or take.

wkohler, I would love to make some more of these but right now there is no way I could find the time to do another. Plus, they would cost a good bit. In order to make it worth my time it would have to be $1200 +. For now I'll leave it to the guys with the right equipment. Laser measuring devices and mandrel benders make this work so simple.

M635csi thanks for the compliment and the info. I don't expect I'll be pushing 400hp for a while, if ever.

Be sure to check out Burns Stainless:

http://www.burnsstainless.com

--Woody

Mike-TurboE24 wrote:Gentlemen (and Ladies...), I'm looking for a good source of mandrel bent exhaust pipe for a new down-pipe. I want to attempt the fabrication myself and there are no local shops in the area that I can find with a mandrel bender. Any suggestions? I have checked on ebay and jcwhitney, but would like some other options as well.

Mike

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