Pipe Bending

[facefirst35]

I'm interested in learning how to build my own exhausts. Would something like this suffice for bending exhaust pipes or do I need something else? I'm assuming with this type of bender I'd need to pack it tight with sand and weld caps on both ends. http://www.ebay.com/itm/12-Ton-Hydraulic-Pipe-And-Tube-Bender-Exhaust-Pipes-/350849913498?pt=BI_Pipe_Benders&hash=item51b048d29a

I've seen pipe benders for around $10K but I have to think that something that costs less would do the job for me. I figured some of you guys probably build your own exhausts and could point me in the right direction. Thanks!

 

[VonYinzer]

www.mandrel-bends.com

 

[Kamn]

Von gave you the cheaper and easier way because after screwing up several pieces and it looks all crappy, you could have just bought the correct size tubing with the radius you want.

 

[ako]

The pipe bender you listed is for making farm gates and stuff.

The inside of the bend is deformed in the process, which is not good for gas flow.

The mandrel bends posted by Von are supported internally are are constant profile through the bend. The bending machine is very expensive and does not make sense to purchase unless you are a pro.

If you want to kick it old school, you can look up sand bending. Basically you stuff the tube with sand, compress it down with a ram rod, then heat and bend. The sand acts as the mandrel in this case.

 

[facefirst35]

I was interested in sand bending but it sounds like I shouldn't bother. On another note, whats is the standard gauge for pipes? Or is it a model by model basis?

 

[nrcb125]

This is a good read (http://www.thumpertalk.com/topic/793138-how-do-i-calculate-my-4-stroke-exhaust-size-legnth/) if you want to learn more the science behind 4-stroke exhaust tuning.

 

[oldskool]

16 or 18 gauge depending on your welding abilities. if you havent welded a lot of thin matereial then go for the 16.

 

[facefirst35]

Thanks gents.