Checking push rod length
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 1,168
Likes: 17
From: Iowa
Checking push rod length
I am putting a motor together on a stand. I need to get push rods ordered so today I assembled a couple rockers on valve stem ends covered with dry eraser marker and rolled the crank over a few turns. The marks on the valve stems are centered, but I noticed that the valves didn't lift anywhere near .525" as the lifters are new and not pumped up with oil yet. So I'm guessing that I will have to pump up the lifters before I can check this? I wasn't going to fill with oil and prime till it was installed and ready to fire. Dave
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
I tried that method too and had the same issue you did. I went and bought one of these tools and it really takes the guess work out.
http://www.summitracing.com/parts/pro-66789
http://www.summitracing.com/parts/pro-66789
Last edited by johnt365; Nov 9, 2012 at 05:12 PM.
Race Director
Joined: Apr 2000
Posts: 17,648
Likes: 189
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Yeah you can get the light pushrod checking springs for little coin 
You can also set up a dial indicator and measure the cam lobe lift pretty easily
You can also set up a dial indicator and measure the cam lobe lift pretty easily
