| Re: Roller Rocker issue |
Subject: Re: Roller Rocker issue by rklessdriver on 2011/4/14 2:01:49 Quote:
Half a turn from zero lash should be good. Roller rockers should have a "light snick" sound and they should all have the same pitch.... so when the engine is running at idle it sounds like a big sewing machine running. Snick,snick,nick,nick,nick,nick,nick,nick,nick.... Different rockers sound differently. The Comp steel rockers have a slightly different pitch of sound than Alum rockers will. When you adjust them with the engine idling you want to tighten them until the clattering stops and then stop. I hope my description of sounds makes sense. I know what it sounds like - but "light snick" that's the best I can do as far as then written word... The reason the engine changes idle speed (or hickups) is because you are changing the duration of the cam for a split second before the lifter bleeds down enough to correct the lash.... if you go too far you will hang the valve off the seat and start skipping/running on 7cyls... That is why you should stop as soon as it get's quiet... you can play with it a lil bit (say a 1/4 to 1/2 turn more) to see if it gets any quieter - but if it dosen't I would not recommend you go any further than that for fear of bottoming the lifter out and maybe bending a valve. Also in your last video I hear what appears to be a distinct exhaust leak. Will |
