Itb's and runner length

Pettersen · 04-14-2012, 05:04 AM

So not to far away from starting building the intake manifold for my semi pp engine, so have anyone done any reasearch into wich length is best for wich rpm's? And proven it with dyno runs?

I was thinking something like this:
http://forums.neons.org/viewtopic.php?t=294784

Raksj04 · 04-14-2012, 06:52 AM

I would just use the variable intake runners that mazda used on the 787B. There is a good ASE paper on the engine. At least shows bits of the power curve with the different runner lennths.

http://www.rotaryeng.net/Mazda_R26B_US.pdf

Pettersen · 04-14-2012, 06:59 AM

Thanks.

04-14-2012, 05:04 AM	#1
Pettersen Rotary Fanatic Join Date: Mar 2010 Location: Norway Posts: 163 Rep Power: 16	Itb's and runner length So not to far away from starting building the intake manifold for my semi pp engine, so have anyone done any reasearch into wich length is best for wich rpm's? And proven it with dyno runs? I was thinking something like this: http://forums.neons.org/viewtopic.php?t=294784

04-14-2012, 06:52 AM	#2
Raksj04 I have Ultra power in me. Join Date: Sep 2011 Posts: 457 Rep Power: 14	I would just use the variable intake runners that mazda used on the 787B. There is a good ASE paper on the engine. At least shows bits of the power curve with the different runner lennths. http://www.rotaryeng.net/Mazda_R26B_US.pdf

04-14-2012, 06:59 AM	#3
Pettersen Rotary Fanatic Join Date: Mar 2010 Location: Norway Posts: 163 Rep Power: 16	Thanks.