Adjusting Valve Lash with Schubek/Smith Lifters

njk53 · 04-28-2014, 03:07 PM

How are you guys out there that are using Schubek/Smith Machine limited travel lifters adjusting your rocker arms. We were told to adjust to zero lash which we do but, my question is are you giving the rocker an extra 1/4 turn, 1/2 turn etc after zero lash is achieved. Or when zero lash is achieved do you stop there with no extra turn?

Rsmith38 · 04-28-2014, 03:42 PM

No extra turn - Sherman info says .001 clearance.

MR DERBY CITY · 04-28-2014, 07:11 PM

Regarding adjustment for shubeck hydraulic lifters in a small block Chevy, I was taught by the best , Woodro Josey. Zero lash and you want a small amount of drag on the pushrod. Please take your time and do this correctly or the outcome may be catastrophic. M.J.

GTX JOHN · 04-29-2014, 12:53 PM

I adjust Zero lash and make sure that I can only turn the pushrods with quite a fair
amount of drag

Some of them have 015 travel and some have 030.....Terrible quality control.
If they get loose the puck sometimes fall out and destroys the engine!
Check lash often a look for any bending pushrods increasing lash before
disaster strikes!

Your results of course may vary.

njk53 · 04-30-2014, 10:43 AM

Thanks to all who replied

04-28-2014, 03:07 PM	#1
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Adjusting Valve Lash with Schubek/Smith Lifters How are you guys out there that are using Schubek/Smith Machine limited travel lifters adjusting your rocker arms. We were told to adjust to zero lash which we do but, my question is are you giving the rocker an extra 1/4 turn, 1/2 turn etc after zero lash is achieved. Or when zero lash is achieved do you stop there with no extra turn? __________________ Nelson Kowal Stock 345

04-28-2014, 03:42 PM	#2
Rsmith38 Member Join Date: Mar 2011 Posts: 186 Likes: 0 Liked 28 Times in 15 Posts	Re: Adjusting Valve Lash with Schubek/Smith Lifters No extra turn - Sherman info says .001 clearance.

04-28-2014, 07:11 PM	#3
MR DERBY CITY VIP Member Join Date: Feb 2014 Location: Derby City, USA Posts: 3,358 Likes: 905 Liked 6,737 Times in 1,313 Posts	Re: Adjusting Valve Lash with Schubek/Smith Lifters Regarding adjustment for shubeck hydraulic lifters in a small block Chevy, I was taught by the best , Woodro Josey. Zero lash and you want a small amount of drag on the pushrod. Please take your time and do this correctly or the outcome may be catastrophic. M.J.

04-29-2014, 12:53 PM	#4
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,546 Likes: 2,246 Liked 1,888 Times in 581 Posts	Re: Adjusting Valve Lash with Schubek/Smith Lifters I adjust Zero lash and make sure that I can only turn the pushrods with quite a fair amount of drag Some of them have 015 travel and some have 030.....Terrible quality control. If they get loose the puck sometimes fall out and destroys the engine! Check lash often a look for any bending pushrods increasing lash before disaster strikes! Your results of course may vary. __________________ John Irving 741 Stock 741 Super Stock

04-30-2014, 10:43 AM	#5
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Adjusting Valve Lash with Schubek/Smith Lifters Thanks to all who replied __________________ Nelson Kowal Stock 345