AbsurdFlow + GT2871R + TiAL pornography
#187
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the burns collectors are deininitely nice but with a pricetag of $300 and up, I'd rather spend a week replicating one. that's for 16ga material, too. IIRC they don't deal with sch10/40.
heres my contributon to collector making. cut four equal lenght sections out of straight pipe. 4" lenghts are regularly used, but 3" and 5" are common too. the longer the better the flow, but the harder the manifold design for packaging reasons. find an angle that works for the lenght of pipe (between 10-20 degrees). you want to end up with around 1/4 of the original circumference on the end of each pipe after making both cuts to make a 4-1 collector with the discharge circumference equal to a single uncut pipe. hope that makes sense. the first cut is easy. for the second cut, you need to find a way to turn the pipe 90 degrees on its axis, and make the second cut. this is cruicial as the fitment depends on it. one degree will create a gap.
all four cut and ready to be cleaned and weld:
heres my contributon to collector making. cut four equal lenght sections out of straight pipe. 4" lenghts are regularly used, but 3" and 5" are common too. the longer the better the flow, but the harder the manifold design for packaging reasons. find an angle that works for the lenght of pipe (between 10-20 degrees). you want to end up with around 1/4 of the original circumference on the end of each pipe after making both cuts to make a 4-1 collector with the discharge circumference equal to a single uncut pipe. hope that makes sense. the first cut is easy. for the second cut, you need to find a way to turn the pipe 90 degrees on its axis, and make the second cut. this is cruicial as the fitment depends on it. one degree will create a gap.
all four cut and ready to be cleaned and weld:
![Name: 2006_0530washington0023.jpg
Views: 143
Size: 68.2 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204461d1501249951-absurdflow-gt2871r-tial-pornography-2006_0530washington0023.jpg)
#188
Elite Member
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Join Date: Jun 2006
Location: Chesterfield, NJ
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![Default](https://www.miataturbo.net/images/icons/icon1.gif)
heres my contributon to collector making. cut four equal lenght sections out of straight pipe. 4" lenghts are regularly used, but 3" and 5" are common too. the longer the better the flow, but the harder the manifold design for packaging reasons. find an angle that works for the lenght of pipe (between 10-20 degrees). you want to end up with around 1/4 of the original circumference on the end of each pipe after making both cuts to make a 4-1 collector with the discharge circumference equal to a single uncut pipe. hope that makes sense. the first cut is easy. for the second cut, you need to find a way to turn the pipe 90 degrees on its axis, and make the second cut. this is cruicial as the fitment depends on it. one degree will create a gap.
![](https://www.miataturbo.net/images/smilies/werd.gif)
all four cut and ready to be cleaned and weld:
![](http://i56.photobucket.com/albums/g191/jsw1986/2006_0530washington0023.jpg)
#189
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We have a Mazak FabriGear (6-axis laser tube cutter) at work. I was actually thinking of cutting some intake and exhaust bits on it (if I ever actually ended up getting a turbo, that is).
Does the inside get welded, also? If so, I can put in a back-bevel to create a weld gap on all the acute-angle joins.
Does the inside get welded, also? If so, I can put in a back-bevel to create a weld gap on all the acute-angle joins.
#190
Elite Member
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iTrader: (9)
Join Date: Jun 2006
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![Default](https://www.miataturbo.net/images/icons/icon1.gif)
We have a Mazak FabriGear (6-axis laser tube cutter) at work. I was actually thinking of cutting some intake and exhaust bits on it (if I ever actually ended up getting a turbo, that is).
Does the inside get welded, also? If so, I can put in a back-bevel to create a weld gap on all the acute-angle joins.
Does the inside get welded, also? If so, I can put in a back-bevel to create a weld gap on all the acute-angle joins.
![](https://www.miataturbo.net/images/smilies/smile.gif)
#194
Former Vendor
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There are no words to describe this manifold. It looks pretty and well-designed, but close up... good god.
![Name: DSCN1572.jpg
Views: 160
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![Name: DSCN1573.jpg
Views: 152
Size: 73.5 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204439d1501249914-absurdflow-gt2871r-tial-pornography-dscn1573.jpg)
![Name: DSCN1574.jpg
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The wastegate tube is less a mode of exhaust gas transportation, and more a piece of art:
![Name: DSCN1571.jpg
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The downpipe is straighter than the photos show.
![Name: DSCN1566.jpg
Views: 150
Size: 125.0 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204442d1501249914-absurdflow-gt2871r-tial-pornography-dscn1566.jpg)
You can see all the way through to the final straight section from the mouth:
![Name: DSCN1567.jpg
Views: 138
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I'm going to cry.
![Name: DSCN1572.jpg
Views: 160
Size: 109.1 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204438d1501249914-absurdflow-gt2871r-tial-pornography-dscn1572.jpg)
![Name: DSCN1573.jpg
Views: 152
Size: 73.5 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204439d1501249914-absurdflow-gt2871r-tial-pornography-dscn1573.jpg)
![Name: DSCN1574.jpg
Views: 141
Size: 90.8 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204440d1501249914-absurdflow-gt2871r-tial-pornography-dscn1574.jpg)
The wastegate tube is less a mode of exhaust gas transportation, and more a piece of art:
![Name: DSCN1571.jpg
Views: 155
Size: 58.6 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204441d1501249914-absurdflow-gt2871r-tial-pornography-dscn1571.jpg)
The downpipe is straighter than the photos show.
![Name: DSCN1566.jpg
Views: 150
Size: 125.0 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204442d1501249914-absurdflow-gt2871r-tial-pornography-dscn1566.jpg)
You can see all the way through to the final straight section from the mouth:
![Name: DSCN1567.jpg
Views: 138
Size: 82.6 KB](https://www.miataturbo.net/attachments/general-miata-chat-9/204443d1501249914-absurdflow-gt2871r-tial-pornography-dscn1567.jpg)
I'm going to cry.