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Old 11-12-2012, 09:34 PM   #19
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Are you mating 1-4 and 2-3 for your collector pairs?
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Old 11-12-2012, 11:01 PM   #20
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Yes
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Old 11-14-2012, 10:50 AM   #21
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Looky what I have here ;)

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Old 11-14-2012, 11:15 AM   #22
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Oooh... nice.

What kind of welder are you going to use?
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Old 11-14-2012, 11:27 AM   #23
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Great effort. Cant wait to see the results.

Are you going to compare it to the stock manifold, or one of the existing headers that are on the market? I have a spare DC if you want to use it for a dyno comparison.
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Old 11-14-2012, 11:33 AM   #24
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I'm not a strong welder, but my exhaust guy will probably tig weld everything except maybe the collectors(not sure if they can be tig welded or not).
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Old 11-14-2012, 11:46 AM   #25
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ooo shiny pipes lol
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Old 11-14-2012, 11:58 AM   #26
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There will be a comparison to either the stock or your DC if you don't mind me borrowing it its gonna have to come off after a few weeks of driving around so it can be coated. Hopefully if everything goes well the machinist will have everything cut today and I can start with upper portion today.

The results should be interesting, I know what the simulation numbers say so lets see if I end up beating them ;)
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Old 11-14-2012, 12:03 PM   #27
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Originally Posted by xnamerxx View Post
There will be a comparison to either the stock or your DC if you don't mind me borrowing it its gonna have to come off after a few weeks of driving around so it can be coated. Hopefully if everything goes well the machinist will have everything cut today and I can start with upper portion today.

The results should be interesting, I know what the simulation numbers say so lets see if I end up beating them ;)
It is just sitting on the shelf, so happy to let you use it for the test. Being that you are going long tube, are you going to do a clamp together patch section of some type so you could get from the DC/stock collector location to your mid-pipe?
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Old 11-14-2012, 12:17 PM   #28
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Originally Posted by Jason@SportsCar View Post
It is just sitting on the shelf, so happy to let you use it for the test. Being that you are going long tube, are you going to do a clamp together patch section of some type so you could get from the DC/stock collector location to your mid-pipe?
I'm going to have 3-4 3 bolt flanges cut so everything can be relatively compatible with the stock mid pipe and my race mid pipe. The piece that's being cut out will be flanged along with the cut midpipe so I can swap them back and forth.
My header will retain to stock rear cat so I can drive around on the street and get all the stress out of the metal before it goes to be coated. I will be able to move back to the stock mid pipe and header with relative ease for maintenance/repairs or emissions testing.
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Old 11-14-2012, 06:42 PM   #29
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Freaking guy is thinking of everything on this!
Good job Namer!
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Old 11-15-2012, 09:00 PM   #30
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Have you ever seen any v-band flanges that are 1-3/4"? I've never been able to find any, retail anyhow.

Are you going to do just a single flex pipe after the 2-1 transition?
Part of my 2 pipe section is going to be a pair of flex pipes - they'll be just after the tubing turns parallel to the ground, so I figure it's a good place to put them... needs tubing and help save the header at the same :)
It's the inner braided style too, so relatively low flow restriction compared to an open bellows style flex pipe.
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Old 11-15-2012, 09:20 PM   #31
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http://www.reidwashbon.com/racing_pa...ts/v-band.aspx

They aren't all that difficult to find but they are usually pricey. I wasn't going to be using a flex pipe due to packaging issues, so I'm getting around the flex problem by using a beatrush dogbone. I have just enough space to fit a ball and cone socket while still utilizing the stock rear catalyst.
I'd caution against using flex pipes in the header pipes due to the fact you can't have them coated without damaging the coating. Also you might find yourself being unable to fit 2 flex joints on the secondary pipes remember they are about an inch wider than the pipe their based off of.


I wish I could post an update but my machinist has been swamped with work, so I haven't been able to get the flange cut and the exhaust started :( I've been told I should have the part by Monday but I'm not holding my breath.
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Old 11-15-2012, 10:53 PM   #32
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Originally Posted by xnamerxx View Post
http://www.reidwashbon.com/racing_pa...ts/v-band.aspx

They aren't all that difficult to find but they are usually pricey. I wasn't going to be using a flex pipe due to packaging issues, so I'm getting around the flex problem by using a beatrush dogbone. I have just enough space to fit a ball and cone socket while still utilizing the stock rear catalyst.
I'd caution against using flex pipes in the header pipes due to the fact you can't have them coated without damaging the coating. Also you might find yourself being unable to fit 2 flex joints on the secondary pipes remember they are about an inch wider than the pipe their based off of.
Thanks a bunch for the link - I think Burns Stainless has them, but they are around $80 a piece. Hope these guys have them for cheaper.

I've already got the flex pipes welded onto the 2-1 merge collector :)
Off the top of my head, the total width is around 4.5", but if that ends up being a problem, I can always clock it at a 45* angle to make the package a little skinnier.

At this point, I'm not too worried about coating the header, worst case scenario I'll coat the top part and wrap the bottom.

Echo's only have one cat, so I'm lucky there, but I have other issues to contend with...
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Old 11-15-2012, 11:16 PM   #33
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Ahh I thought you had a Yaris...can't comment on the echo engine bay I know I'm limited width wise but have enough space for my pipes. Burns and Coastfab both have them but V bands are expensive, even the cheap vibrant ones are still 75 for the package. Burns is overprices for most everything, you can get SS and associated parts for less money elsewhere.
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Old 11-19-2012, 10:19 AM   #34
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Any progress?
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Old 11-19-2012, 10:39 AM   #35
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This + the mi intake Mani is gonna make my yaris breathe so well.
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Old 11-19-2012, 11:07 AM   #36
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I hope to have the flange finished today, but so far no progess :(

Once I have the flange I can start with the build and it should be a fairly quick process from there on out.
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