Fabrication Everything From JBwelded/Fluxcored downpipes to Equal length SS Manifolds.

Manifold:Flange to pipe transition

Old 04-18-2010, 05:01 AM
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Default Manifold:Flange to pipe transition

I want to know how much it hurts the performance on my logstyle when i weld a round pipe on a ,,square,, exhaust flange

the runners are square with round egdes and have also siamese port design
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Old 04-22-2010, 06:01 PM
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asking if transitioning from round to square on a log manifold is like asking a 350lb fat chick if she put on 5 more pounds if she would no longer be able to run the NYC marathon... in the end, you're already pretty much FUBARed to start with, so, it really doesnt matter.
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Old 04-23-2010, 06:42 AM
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iam just have serious problems with the tight space


iam thinking about this hehe
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Old 04-25-2010, 10:17 PM
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why not connect the two ports with a hunk of square or rectangular 1/4" walled tube? would flow better than that, and would be quick, cheap and easy...
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Old 04-26-2010, 10:48 AM
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cut relief cuts into the round tubing and make the round tubing square.
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Old 06-03-2010, 11:58 AM
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Originally Posted by josh19wrc View Post
why not connect the two ports with a hunk of square or rectangular 1/4" walled tube? would flow better than that, and would be quick, cheap and easy...
hmmmm i was thinking about that too

grouping the ports together........... yeahh call me -----, but iam worry about the turbulence inside, if i just merge two exhaust ports into one

actualy
oldsmobile guys should know it since they have a head with basicaly the same port design in the middle

Last edited by Emperor; 06-03-2010 at 12:26 PM.
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Old 09-18-2010, 12:52 AM
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Originally Posted by Emperor View Post
iam thinking about this hehe
Not trying to point out the obvious, but that would not be a preferred method. You want to reduce any sharp corners, or mis-matched pipe transitions.

Exhust gases going into the "collecters" on either side of that pic would be fine until they came to the tubular pipe, where they run into a flat wall. If a transition was made, or all the "corners" and mis-matched pieces were ported/filled with weld to make smooth seamless transitions, then it wouldnt be a "bad" design, but still could be improved tremendously.
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