Ok. Been searching and found some interesting info, but not specifics. What is the difference between itr and ctr cams? Why do some say only use a ctr intake cam or itr intake cam together with stock b16a/b18c1 exhaust cam? also, if i went with which ever cams could i just buy an ecu or tune mine to advance timing? Whats the benefits of timing change anyway? My motor is b18c1 w p72

 

00-01 itr and ctr cams have the exact same specs. previous year itr intake cams had 3 degrees less duration. most people only use the intake cam because you can get some nice gains with that alone and some tuning.

their are two different types of timing. ignition and cam. you adjust ignition timing by adjusting the maps in the ecu. you adjust cam timing with adjustable cam gears. the proper way to adjust ignition timing is with a programmable engine management system like hondata or crome. you need a socketed and chipped obd1 ecu to use one of these systems.

the benefits to adjusting cam timing are you can move the powerband up or down and dial in overlap, when both the intake and exhaust valves are open. this helps in exhaust scavenging and to bring in a fresh intake charge.

 

isn't there a way to adjust ingnition timing by doing something w/ the distributor? Ive seen my friend do it on his hachi roku while the engine was running by turning something by hand. I could hear the engine roughen or smooth out.

So is there any option to do minor tuning (eg ignition, fuel) using the P72? Don't really have the money to completly change the electronics. BTW thanks Snoop

 

you can change the base timing by adjusting the distributor. but you change timing at different load/rpm points by going into the ecu.

if all you have is minor bolt on's and dont want to do major tuning, you can get away with using a vafc. but i always try to steer people away from this option.

 

cool. Ill just take my time and buy the best or nothing at all.

 

Heres the specs on a few common camshafts.
http://www.allmotorhonda.com/techpages/camspecs.htm

Most will yield more power with higher compression.