collector merge angle??

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Jackasknissan
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collector merge angle??

Post by Jackasknissan » Thu Dec 02, 2010 9:39 pm

hey all, so i finally decided to make a more radical longer lengh manifold.
and im beginning to plan its design., and im wondering, what those who build their own collectors do the merge angle at

, and if anybody has tried do any offsets or any thing to improve sprialing to improve velocity.

im going with bottom mount, and the turbo is going to be placed pretty far forward, so collecter length isnt a big deal. , i just want to know the insight into good collector design.
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TinyT
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Post by TinyT » Fri Dec 03, 2010 12:42 pm

im sure there are some crazy formulas to make the perfect manifold, but if you go with a simple design and a standard collector your gonna be just fine.
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Jordan Gladman
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Post by Jordan Gladman » Fri Dec 03, 2010 12:54 pm

The more acute the angle, the better IMO. Getting pipe to merge into a collector given a certain length with define the angle. Figure out how long your collector CAN be, then draw it up.
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Jackasknissan
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Post by Jackasknissan » Fri Dec 03, 2010 2:28 pm

the angle doesnt affect the cut off length to where the turbo flange meets.


IM enough of a techno geek, i want to formula's to know what really works.
the length isnt to crucial, I was thinking around the 6 inch mark.


Iwont draw things either until i have the turbo sitting where i want., then i'll start planning lengths.
Turbo24sxt wrote:SOHC > DOHC ... period ...
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Jordan Gladman
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Post by Jordan Gladman » Fri Dec 03, 2010 3:08 pm

Im not sure what your first sentance means, but basically the tube end of the collector has to have full rounds to weld onto, the turbo side has to miter and meet to fit into your turbo flange. As the angle of the collector changes so will the minimum length you can cut the tubes to, thats all I was saying. I did my last collector at <30deg angle and it was around 4" long to get into a T3 flange.
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