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Old 16 Jul 2020, 10:55 (Ref:3988692)   #1
dikko
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Join Date: Mar 2005
United Kingdom
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dikko should be qualifying in the top 10 on the grid
Exhausting question.

it's only a lowly Kent Formula Ford engine but I have noticed there is quite a step-out in the opening of the exhaust on the pipe manifold.

The pipes are a much larger bore than the outlets on the head.

Q. Would this step create enough turbulence to result in power loss by creating back pressure and upsetting exhaust flow?
Q If so how much? Anything significant?

I wonder if there is an advantage in funnelling out at that point or am I whistling in the wind and just need to put my foot down further and close my eyes more...
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