my friend has a 96 civic ex, with the d series motor. the mods he has are exhaust and intake, at what position should he adjust the cam gear. he is going to have it dyno tuned but he has to save some money, so this is only a temporary solution.
thanks for your help

 

I wouldn't do anything until on the dyno. Just me.
He could advance it 1 degree....see how it feels on the butt dyno then make changes from there. Don't go to far in either direction without being on the dyno.

 

typically on the single cam, advancing the cam moves the powerband higher in the rpm range, and vice versa. But, since mods are little, change is not needed.

For instance, with my ZEX cam, I have it advanced 4 1/2 degrees. Anytime you do this, remember to re adjust the ignition timing, since it's adjusted with the cam.

Remember, all cam gears do is change the range of ponies on the rev graph. Where it gains you power, you will lose elsewhere.

edit- going with what Spade says, I would adjust more than 1 degree. Try adjusting 2 degrees in either direction. This will make it more apparent where you are gaining/losing power. And remember, adjust ignition timing with the new setting when the car is at operating temp with accessories off.


[Modified by Emerica, 4:05 PM 2/28/2003]

 

how do you adjust timing???

 

turn the distributor.

There will be 3 12mm bolts which hold the dist. onto the head. Loosen these up, grab your timing light, and adjust till you're on 16 degrees + or - 2 degrees: depending on what gas you're running, etc.

 

He runs 93 so where should we put it.......thanks


[Modified by damn vw, 12:30 AM 3/1/2003]

 

advance = higher in the rpm's?
i read in another post retarding the cam timing is better for high end am i wrong?

it said:
retard=high end powerband
advance better bottom end.

so thats wrong?? just making sure whats right and whats not

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spun Vtec &raquo;</TD></TR><TR><TD CLASS="quote">advance = higher in the rpm's?
i read in another post retarding the cam timing is better for high end am i wrong?

it said:
retard=high end powerband
advance better bottom end.

so thats wrong?? just making sure whats right and whats not
</TD></TR></TABLE>yea, i wanna know too

 

ignition time only affects low end torque....

advance timing make more low end power but generates more detonation/heat

retarding timing make less low end power but generates a more rich fuel mix and reduces detonation.

timing does not help high end

 

bump

 

Advancing the cam = power LOW
Retarding cam = power HIGH

Readjust IGNITION timing always.