ok so installed my 1.6:1 roller rockers and when i started the car its idealing like a v8 with cams. are these rockers suppost to make the ideal a little ruffer ? when adjusting them are they suppost to be a little loose or snug with no shake to them? thanks
ITS ALL FUN IN GAMES TILL SOMEONE GETS SHOT IN THE LEG
Not sure on the adjustment part but remember you basicly changed the lift at the valve.
And if its idleing like that I'd have to say that they're probly too tight. Back them off and hope you didn't wipe your cam.
Good Luck
Semper Fi SAINT. May you rest in peace.
what do you mean by wipe your cam ? and i will try backing them down a little bit. i guess that i did kind of exaggerated it sounds more like a 4cyl with like a really ruff idle .?.
ITS ALL FUN IN GAMES TILL SOMEONE GETS SHOT IN THE LEG
By wipe your cam I mean that if the rockers are adjusted wrong the push rod will be pushed to hard down into the lifter and push too hard on the lifter and thay will push down on the cam too hard and when the engine runs the lifters will basicly grind the lobes off the cam. Thats why you need to be careful when doing this type stuff, its not just a simple bolt on deal if they need adjusting.
Good luck and I hope you didn't kill your cam.
Semper Fi SAINT. May you rest in peace.
well i hope i didnt either but i got it to idle like normal . it sounds a little ruffer than normal but not much . im getting a check engine light and a taping noise coming from one of the first 2 cyl but when i pulled the cover off the first intake lifter was to loose so i adjusted it all again so i think that will fix the taping. i just cant seem to get the damm check engine light to go off . i tried diconnecting the negative terminal for like 10 min but that didnt turn it off . the light comes on as soon as the key is turned so i dont think that it is reading anything and then coming off i think its jus that i cant get the comp to reset. any suggestions?
ITS ALL FUN IN GAMES TILL SOMEONE GETS SHOT IN THE LEG
Easy way to clear idiot light: disconnect battery and cycle the igntition (try to start the car).
Now, increasing your rocker arm ratio will increase the overally lift of your valves, and will change the idle. Now, I don't know what you're talking about with a "rough" idle (I come from the land of V-8s and a lift of about 0.5" with a decent cam will give you a nice rough idle.
Insofar as adjusting the valves, this is what I do on the SBC's (small block chevy) I build. I finger tighten the nuts, then rotate the engine to TDC (Top dead center), and tighten all of the closed exhaust valves. I tighten the nuts by rotating the pushrod with one hand while I tighten with the other, once the nut is tight where the pushrod won't rotate, I back off 1/4 turn. Then I rotate the engine to the TDC of the exhaust stroke, and do the same procedure for the closed exhaust valves. Rotate the engine two more times to cover all the valves.
Then I start the engine (with no valve covers on). This makes a big mess, but is the best way to adjust the valves IMHO. I tighten or loosen each nut so that I don't get any rocker noise but still get oil flow from the pushrod.
I know the overhead cam system is a lot different from the pushrod V-8, but your basic principles should be the same, you want the retaining nuts tight enough to prevent rocker arm chatter, but loose enough to allow oil flow and proper valve movement.
I'd be willing to bet that your computer is getting an O2 sensor code from your valves being mis-adjusted, causing oil to enter the combustion chamber, or some exhaust to backfeed into the intake, or even suck some exhaust durning the intake stroke. This condition where you have you intake and exhaust valves open when they should not be is sometimes called "valve float" and generally happens at high RPMs, but in your case, it is from improperly adjusted valves.
you don't adjust the valves with the motor on. you adjust them by cranking the motor over by hand with the crank pulley and adjusting at the end of each stroke. my car idles rough, but that's due to the rockers combined with solid mounts. once you get your valves adjusted perfectly, it may just run wierdly. it's a pushrod motor, that's just how they are.
I was a retard, and now I'm permanently banned.
