i see people writing 'Milllenia IM' in their signature a lot in this forum... i assume the 'IM' stands for Intake Manifold, and that they took it off of a Mazda Millenia??? anyway, can some one explain the physics behind how upgrading your intake manifold can increase hp? i understand how exhaust headers work, and i think i kinda understand why an upgraded air intake creates more hp (the less amount of restriction from air intake = more air flow, more air flow = more air/fuel mixture into cylinder, more air/fuel mixture into cylinder = bigger explosion, bigger explosion = more hp???? or did i kinda mix the whole concept of air intake w/ forced induction a little bit there at the end?? plus i guess the fact that the colder the air, the denser it is, and the denser the air is inside the cylinder, the greater the explosion???), but i've never really considered the intake manifold... i need an explanation about how and why some intake manifolds are better than others, cuz i never really considered the idea... i just thought they'd all perform the same...
w/ all that said, if my assumption was right that Millenia IM means what i thought it did, how much extra hp is gained by switching over?
p.s. i know all of this is so fundamental to a lot of you, but be gentle, i'm still trying to learn so that i can become as knowledgeable as a lot of people in this forum
thanks in advance
Last edited by MarkMoore on February 23rd, 2005, 8:29 pm, edited 2 times in total.
the millenia intake is the same as the curved neck KL-ZE intake, the ports are teh same size as the KL-ZE head intake ports, my KL-ZE started as a straight neck, got a millenia IM cause it was cheaper than getting a "JDM curved neck"
93 MX-3 GS (collecting parts for Eunos Presso conversion), 94 626 Transmission (4.10 gears), KL31 camed KL-ZE, Millenia intake, Millenia TB, SSAutochrome V2 headers, Magnaflow cat, 2 1/4 in pipe, Top Speed Pro 1 muffler, 9lb Fidanza Flywheel, ACT clutch, Corksport SS clutch line, Corksport SS brake lines, Unorthadox UDP, 255 lph fuel pump, HEI mod, ghetto-charger intake, KL36 ECU, SRD transverse crossmember bushings, SRD shifter extention bushing, SRD crossmember, Corksport bronzoil shifter bushings, Brembo Crossdrilled and Slotted rotors, 15 inch Konig Heliums, ZX-2 S/R struts, Eibach lowering springs, OEM front strut bar, Ebay rear strut bar, BFGoodrich G-Force T/A KDWs
Parts needing installed: turbo kit from BB (if i ever get it), 9.0:1 CR Diamond pistons, 4340 forged H beam rods, C/J-Spec spoiler, Nissan red tops in KL rails http://www.cardomain.com/id/blazejeremy
papa roached wrote:the millenia intake is the same as the curved neck KL-ZE intake, the ports are teh same size as the KL-ZE head intake ports, my KL-ZE started as a straight neck, got a millenia IM cause it was cheaper than getting a "JDM curved neck"
M M: Same reasons for me and my KLZE engine. The Millennia IM just compliments the rest of the engine components for the KLZE (completes the package). I don't believe it's something that goes onto the K8. Hope that helps.
jschrauwen wrote: The Millennia IM just compliments the rest of the engine components for the KLZE (completes the package). I don't believe it's something that goes onto the K8.
Yes, there isn't much point in just bunging a bigger conduit into the middle of a properly designed system.
It's true that bigger diameter will offer a lower resistance to airflow (less pressure drop - in this case it's vacuum drop, but that's just a special name for pressure below atmospheric). However, the transition between two different diameters is even more important - you can get much more pressure drop from that. If you were to completely replace the K8 inlet tract with that from the Millenia, including opening out the ports in the head in a very careful manner, you would probably see a small improvement.
Re-shaped and re-sized gearshift lever. Best driveability mod you can do!
Extra thick soundproofing in the boot (trunk) to quieten my stainless steel exhaust system
