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custom manifold question???

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Old 11-03-09, 06:50 PM
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custom manifold question???

Hi everyone, I'm trying to do a custom manifold for my turbo RX2 but I can't seem to find a 13b Stainless steal Flange. Also i don't know what diameter tubing i should get and if i can get a 2-1 collector for t4 flange. I've been doing my reseach but nothing seems to comes up. please help.
Old 11-03-09, 07:20 PM
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mazdatrix has stainless 13b engine flanges that are 1/2 thick. I bought one, looks pretty decent, i think its cast then post machined

As for tubing, thats a whole science/user preference.
Old 11-03-09, 07:22 PM
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1/2" seems thin?
Old 11-03-09, 07:24 PM
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I wouldn't think so. Thicker isn't going to make it warp less under heat.

I may be wrong as to the thickness, but i just looked to where the box is with the flange in it, and its behind alot of other stuff that my tired *** isnt moving tonight
Old 11-03-09, 07:34 PM
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Originally Posted by CrackHeadMel
mazdatrix has stainless 13b engine flanges that are 1/2 thick. I bought one, looks pretty decent, i think its cast then post machined

As for tubing, thats a whole science/user preference.
i called mazdatrix but the one they have is not a flat piece in stainless its the one with grooves in it which is not what im looking for. the external port is 2inches in diameter but i feel like when i build the motor it might need bigger piping.
Old 11-03-09, 07:57 PM
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well being ur in CT, the capital of machineshops, you could just have one cut at a machineshop to your own thickness and with whatever exhaust port diameter you want

you should be able to scrounge up a stainless drop large enough for flange for under $40
Old 11-04-09, 07:08 AM
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Racing beat has a falnge. Very thick. holding up nicely in my car
Old 11-04-09, 07:51 AM
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Originally Posted by CrackHeadMel
mazdatrix has stainless 13b engine flanges that are 1/2 thick. I bought one, looks pretty decent, i think its cast then post machined
Originally Posted by janrx7
Racing beat has a falnge. Very thick. holding up nicely in my car
Mazdatrix sells the RB flanges.
Old 11-04-09, 05:02 PM
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thanks guys i will be calling racing beat.
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