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gianttomato
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Re: 1jz custom inlet manifold group buy Mon, 11 August 2003 03:03 Go to previous messageGo to previous message
Yojimbo wrote on Sun, 10 August 2003 14:30


apparently there is up to 30% flow difference between runners in any 1j manifold,


Positive pressure will equalise the flow differences. This is one of the reasons supercharging was introduced on radial engined plane engines - to attempt to equalize pressures and flow across vastly different length runners.

JAZE wrote on Sat, 09 August 2003 22:51

....... yes indeed, induction trumpets on a turbocharged engine....... a smashing idea, why didnt i think of that?


Induction trumpets will increase flow and velocity thru the runner. Turbocharged engines respond in exactly the same way to this modification as a naturally aspirated engine. Given that modifying the intake manifold is the lowest bang for buck mod you could do and the only reason you might consider doing it is to pick up the very last bits of power (there are quite a few healthy 1 and 2JZs running big numbers on the standard manifold), why not use induction trumpets?

Good luck. Sounds interesting.
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