My first IDI, need some exhaust input.

[Lonesome7.3]

How did that turn out?

 

[laserjock]

Pretty good I think.
I ended up using the down pipe, an elbow, and a straight piece plus a vband flange correct for my turbo.

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That's the finished product on the left. Banks pipe on the right.

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Connected to the turbo.

 

[DaveBen]

Looks nice!

 

[Lonesome7.3]

I like

 

[laserjock]

I just put in my first full exhaust on my truck. If I had it to do over again I wouldn't get many mandrel bends at all. I only used a few of them because most of the bends were the wrong radius. I figured up all the bends I needed and just made them from straight pipe. I ended up just making the v-band and the transition to 4" using a piece of 1" plate bored out and the flare from a 3"-4" transition. I dimpled the floorboard in about 1.5" to clearance the pipe between bellhousing and the cab.

The v-band

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The lobster back. 4" pipe on a 5" center line radius.

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Fitted up.

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Painted.

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I really wish I had replaced that stupid flattened pipe on the 7.3 when I was running it. It would have been fun. When I started this project, I was shocked that there was no cheap hobby-level software for calculating bend segments. I ended up writing some software to calculate the bends and produce the segment templates which can be printed out and traced on the pipe. Then you can cut it with a cut-off wheel, hacksaw, sawz-all, or whatever you have if you don't have chop-saw with an indexable fence. I was going to sell it cheap for DIY'ers like myself. 3.5" pipe templates will fit diagonally on standard 8.5"x11" paper. But I would need to add a nesting component for pipe larger than that.

I think I spent around $250 for everything. That included the Donaldson 40" muffler and hangers which I just made up out of .5" hot roll and the little rubber sections from Summit. I bought everything from Summit except the muffler. It came from Ryder. I bought 16' 4" pipe in 4' sections.

I like it. Curious what you painted it with? I'm at a crossroads and need to paint or coat all my exhaust stuff. I'll probably wrap the DP at a minimum. Maybe the uppipe too more to keep heat out of the cab than anything else. The uppipe is a heavy casting so I don't worry too much about loosing heat for performance sake.

 

[Lonesome7.3]

I pulled the stock exhaust today. I was hoping to get the new down pipe ordered tonight.

 

[IDIoit]

I like it. Curious what you painted it with? I'm at a crossroads and need to paint or coat all my exhaust stuff. I'll probably wrap the DP at a minimum. Maybe the uppipe too more to keep heat out of the cab than anything else. The uppipe is a heavy casting so I don't worry too much about loosing heat for performance sake.

http://www.techlinecoatings.com/hi-performance/bs-exhaust-system-coatings.html

 

[Lonesome7.3]

Cool, I might use that stuff to

 

[laserjock]

Can you find a place to buy it? My searches have come up nada. @IDIoit ?

 

[IDIoit]

Can you find a place to buy it? My searches have come up nada. @IDIoit ?

gotta have a resale license , i can buy it for ya

 

[Lonesome7.3]

How much with shipping?