Valve Train

PKRWUD · 09-28-2001, 06:14 AM

That's a good starting point. Follow that up with a running adjustment. If you have a junk valve cover handy, cut off the top, and install it on one head. Start the engine. Back off one rocker at a time until it starts to clatter. Then, tighten it 1/4 turn, wait 10 seconds for the engine to stabilize, tighten it another 1/4 turn, wait 10 seconds, and one last 1/4 turn. Move to the next valve and do it again. After finishing one side, move the valve cover to the other side. FWIW, most auto parts stores sell oil deflectors that mount onto the rocker arms and keep the oil from making a mess.

Just remember, no matter how you do it, once you find zero lash (start clattering if running, or when the pushrod no longer turns by hand), tighten a total of 3/4 of a turn after zero lash.

Take care
~Chris

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09-28-2001, 06:14 AM	#3
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	That's a good starting point. Follow that up with a running adjustment. If you have a junk valve cover handy, cut off the top, and install it on one head. Start the engine. Back off one rocker at a time until it starts to clatter. Then, tighten it 1/4 turn, wait 10 seconds for the engine to stabilize, tighten it another 1/4 turn, wait 10 seconds, and one last 1/4 turn. Move to the next valve and do it again. After finishing one side, move the valve cover to the other side. FWIW, most auto parts stores sell oil deflectors that mount onto the rocker arms and keep the oil from making a mess. Just remember, no matter how you do it, once you find zero lash (start clattering if running, or when the pushrod no longer turns by hand), tighten a total of 3/4 of a turn after zero lash. Take care ~Chris ------------------ Retired Moderator MustangNet My site: JimPorterRacing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN. The best tool you'll ever have, and it's free !!!