SOHC 4 butterflies in intake manifold???

[SPIRO]

I got a free KA24E from my friend after he swaped to an SR (which has never ever been done before), so anyways i started taking it apart so realnissan.com can help me improve it and i was real confused after i took the intake manifold off.. There are 4 butterflies in it right where it attaches to the head. Well i had no idea these engines had these, can someone please tell me exactly what the purpose of the extra butterflies are and if it is safe to remove them? Thanks a lot.

[ADAMHU]

they are used to increase torque at low rpm.... take them all out..and all the parts that goes with them...they really don't help..make sure you block all the holes off..

[SPIRO]

So they are supposed to increase torque at low RPMs but they dont really? I'm trying to go all motor so i need the torque. Would there be any advantage if i were to take them out?

[tapdeznutz]

im guessing what Adamhu meant is take them out so u can free up the air flow. so u lose some low torque but gain better air flow. just my thought

jay

[TrueSlide]

I took mine off, I only closed up the side hole and the hole in the middle of the manifold.

[ADAMHU]

the question is...do you need the torque at low RPM....no... you want it up top...