fuel mileage

[180sxsun]

can cams cause bad gas mileage and or consume more fuel???:eek2: or anyone who has cams on a ka hows the gas consumption?? cuz mine really sucks, im putting my stock cams back on cuz the idle sucks and im thinking of rebuilding the motor back up to par.

[ThatGuy]

Hmmm, intake cam? Let's think for a minute. An intake cam allows the Valves to stay open longer to allow more air and FUEL to enter the combustion chamber to increase power. Let's think for a minute, then see where this thread goes.

[180sxsun]

Hmmm, intake cam? Let's think for a minute. An intake cam allows the Valves to stay open longer to allow more air and FUEL to enter the combustion chamber to increase power. Let's think for a minute, then see where this thread goes.
i know i know but just to put it out there cuz i bought the car from a buddy of mine and he put the cams on.:bow:

im new to nissans so im tryin to learn as much as poss. (use to own a wrx), awd was kooo but rwd is more fun.

[!Zar!]

Last I checked, cams do the same thing in every car...


But the question was already answered.

Always remember, for every positive, there is almost always a negative.

[sideview_180sx]

usually the more power you make, the lower the mileage. Deal with it.

[ms!3]

what cams are they? im running dual 248s and i noticed my gas mileage drop.

[180sxsun]

what cams are they? im running dual 248s and i noticed my gas mileage drop.

i think my buddy put in s15 exhaust cams on the intake side, dont quote me on this but thats what he said, pullin it out this weekend, cuz of gas and idles f**kin bad and i have the blitz tt on it so its like a cop magnet rite now..:2f2f: :nono:

[tre]

i'm running .411 lift cams with 231duration @ .050 lift. Not getting better or worse gas mileage. But i never drive/cruise in pwer band unless i open her up.

10.44mm is roughly what a .411 lift is.

But anyways the more power you make N/A you WILL get better gas mileage IF you drive like a normal person.

btw i'm still getting 24mpg at least. upwards of 30ish

and you dont know anything about a rough idle LOL

oh and zar i belive you mean, for every action there is an equal and opposite reaction :P

[ms!3]

lol so its normal for it to idle pretty bad with cams? when i did the dual exhaust cams it idled horrible:rant2:. it would jump from 400 to 1k and when id be driving and come to a stop it would die on me so i had to raise the idle. It doesnt die now but i doesnt idle smooth like before. i kinda like the sound of a bad idle ,like a v8, but i just dont want it to die on me.

[punxva]

umm... have u ever heard of the term caming? or lumpy idle? thats what happens when u install aggressive cams on a street car, fuel mileage drops and the idle becomes inconsistant, you have to pay to play the game as they say

[ms!3]

i knew that i was just wanting to know how the idle was supposed to be. wasnt sure if it idled bad because the cam was out of time or if it was just the cam.

[180sxsun]

i knew that i was just wanting to know how the idle was supposed to be. wasnt sure if it idled bad because the cam was out of time or if it was just the cam.
do you have adjustable cam gears, cuz i do and i idle between 700 to 850 and justs bounce back and fourth but the worst part about it is when you drive normal and keep the rpm's at 2 to 3 ( basically cruisin ) it will jerk hard, sputtering should i say. and you have to accelerate and or let off.

[ms!3]

naw, no adjustable sprockets, im just running to exhaust cams. lol i know what your talking about with the spuddering thing, im only at 248 duration and its kinda bad, i think jim wolf is like 270 or something? that will throw you out of the seat, lol

[180sxsun]

naw, no adjustable sprockets, im just running to exhaust cams. lol i know what your talking about with the spuddering thing, im only at 248 duration and its kinda bad, i think jim wolf is like 170 or something? that will throw you out of the seat, lol
i know rite.. oh yea is your car running a little rich wid the cams? :2f2f:

[ms!3]

yep... when i get on it sometimes i can smell it alittle bit. ive heard somepeople say that with any cam upgrade you need to run some type of stand alone. i only went up from 240 to 248 so i think im alright.

[tre]

I really don't see putting such a mild cam can cause that much of a rough idle. I should take video for you so you know how my car idles with a hot "street" cam.