12a And 13b Exhaust Flanges

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09-09-2003, 07:07 AM

72opelguy

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what is the difference between the 12a and the 13 b exhaust port/flanges i dont see much difference

09-09-2003, 08:04 AM

jspecracer7

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they're almost exactly the same. You can fit the 12A onto a 13B if you open the 12A holes a bit. HOWEVER the exhaust ports will be offset to the exhaust manifold.

09-09-2003, 12:28 PM

j9fd3s

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Quote:

Originally Posted by 72opelguy' date='Sep 9 2003, 04:07 AM

what is the difference between the 12a and the 13 b exhaust port/flanges i dont see much difference

the 13b is 10mm longer in the rotor housings, so the exhaust ports are slightly further apart vs a 12a

mike

09-09-2003, 07:30 PM

72opelguy

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so do you think i could cut out the web between the ports on a 13b turbo header and push it together so it fits a 12a and weld it back up so i can have a turbo manifold for my 12a

09-09-2003, 09:13 PM

j9fd3s

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Quote:

Originally Posted by 72opelguy' date='Sep 9 2003, 04:30 PM

so do you think i could cut out the web between the ports on a 13b turbo header and push it together so it fits a 12a and weld it back up so i can have a turbo manifold for my 12a

yep

09-09-2003, 09:43 PM

NUFFBOOST

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Yeah it can be done, but why bother flanges are cheap buy one 19.00 - 43.00 and that depends on the thickness of the flange you want

09-10-2003, 08:08 AM

72opelguy

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well its is far simpler to use a turbo mamifold that has already been made than to make it all out of scratch i knoe i could make one but is a question of why should i if i can buy one