Iam thinking about to build my own Intake mani. The reason is the OEM one is eco ---- and only good to drive slow and save gas





ive some links howto build a mani but not mani that say how its calculated :1

 

General rule of thumb is ake the plenum size 1.5 times the swept displacement. Two liter engine = three liter plenum.

I would base the ports off of the stock manifold. Making them a little shorter biases powerband upward. Making them bigger around raises the choke point of airflow. Make your changes small to modest is my best recommendation, you can make the car a real dog if you aren't careful.

Anything that comes with a crappy IM usually comes with crappy cam(s). Plan accordingly.

 

Oh yes crappy cam´s is involved too
actualy the whole head is full of ----

but there is no replacement so i go on to tray my best with PNP and a custom Intake Mani + a nice set of headers

3liters? hmmm ok must i follow a special design like taper the plenum?

its an inline 6

 

this is some ---- i found. i did not read any of this but it might help you http://www.phys.unsw.edu.au/jw/Helmholtz.html and http://www.physicsforums.com/showthread.php?t=80364

 

first link do iam look like a ------- rocket sincetist??

second link is gold worth

Thanks alot

i think i go the lazy way with ibs + plenum and call it skyline style

why is designing a intake mani not so easy like an Exhaust mani

God bless Corky bell and his book about turbos

BTW
i hate this head design look at the injector position

 

maximum boost is a good book but corky bell is too biased and its outdated

 

his supercharger book has some more upto date info.

 

that wiring looks like the orangepeel gsx mexicant tuner project overspray paintjob

 

what kind of car is that? when i saw the manifold i thought BMW, but now that i see the car i dont think so.

also, that front rim is bent to ----

 

its not my car just to show how the head looks

Its an Lexus IS 200

btw

on the pic is the car from the pro drifter Monster Matt

download link?