Adjusting valves on cold engine

sportsfan · 10-04-2009, 10:16 AM

I need to adjust the valves on a SBC.It has a Crower solid cam,clearances are .022 intake and.024 exhaust with engine hot.Problem is I can't warm the engine in my neighborhood.What clearances should I use with the engine cold?

Alan Roehrich · 10-04-2009, 01:13 PM

For cold valve lash, for the first time start up:

With an iron block and iron heads, I set mine about 0.004" to 0.006" loose. With an iron block and aluminum heads, I set mine about 0.006" tight.

Hope that helps.

rallye bob · 10-06-2009, 05:16 AM

Alan;
Do you use the same "rule" for a solid roller cam?

Alan Roehrich · 10-06-2009, 06:48 AM

Yes Bob, I do. It seems to work pretty well. I tend to err to the tight side on lash, as a general rule, I don't like stuff bouncing around loose.

10-04-2009, 10:16 AM	#1
sportsfan Junior Member Join Date: Aug 2004 Location: Somerville,New Jersey Posts: 34 Likes: 0 Liked 0 Times in 0 Posts	Adjusting valves on cold engine I need to adjust the valves on a SBC.It has a Crower solid cam,clearances are .022 intake and.024 exhaust with engine hot.Problem is I can't warm the engine in my neighborhood.What clearances should I use with the engine cold?

10-04-2009, 01:13 PM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,098 Likes: 1,546 Liked 1,777 Times in 404 Posts	Re: Adjusting valves on cold engine For cold valve lash, for the first time start up: With an iron block and iron heads, I set mine about 0.004" to 0.006" loose. With an iron block and aluminum heads, I set mine about 0.006" tight. Hope that helps. __________________ Alan Roehrich 212A G/S

10-06-2009, 05:16 AM	#3
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 488 Likes: 9 Liked 6 Times in 4 Posts	Re: Adjusting valves on cold engine Alan; Do you use the same "rule" for a solid roller cam?

10-06-2009, 06:48 AM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,098 Likes: 1,546 Liked 1,777 Times in 404 Posts	Re: Adjusting valves on cold engine Yes Bob, I do. It seems to work pretty well. I tend to err to the tight side on lash, as a general rule, I don't like stuff bouncing around loose. __________________ Alan Roehrich 212A G/S