anybody want to hazard a guess?

Ken Haase · 06-07-2016, 05:23 PM

Working on a BBC with T&D rockers. Any idea how much an increase of .100" in pushrod length will move the roller center farther out on the valve stem tip? Need a little more retainer to rocker clearance and the roller is definitely to the inbord side of the valve centerline.
Yes, we could make an adjustable pushrod, but we can make one solid one quicker and try it, since I'm buying a complete set anyway.

thanks

Jeff Stout · 06-07-2016, 05:35 PM

On the TD shaft don't they make thicker shims to go under stands to raise rockers and help clearance. I thought I read that some where.
Sorry just re read post and read you are on inside of valve and could use more rod to get to center and not touch retainer

Ken Haase · 06-07-2016, 06:04 PM

Jeff, you are correct. Only shimming the stands further will correct roller tip to valve centerline misalignment. I called T&D, which I should have done in the first place. Thanks for your reply.

06-07-2016, 05:23 PM	#1
Ken Haase Member Join Date: Mar 2007 Posts: 233 Likes: 0 Liked 1 Time in 1 Post	anybody want to hazard a guess? Working on a BBC with T&D rockers. Any idea how much an increase of .100" in pushrod length will move the roller center farther out on the valve stem tip? Need a little more retainer to rocker clearance and the roller is definitely to the inbord side of the valve centerline. Yes, we could make an adjustable pushrod, but we can make one solid one quicker and try it, since I'm buying a complete set anyway. thanks

06-07-2016, 05:35 PM	#2
Jeff Stout VIP Member Join Date: Dec 2001 Location: phoenix Posts: 1,409 Likes: 53 Liked 655 Times in 255 Posts	Re: anybody want to hazard a guess? On the TD shaft don't they make thicker shims to go under stands to raise rockers and help clearance. I thought I read that some where. Sorry just re read post and read you are on inside of valve and could use more rod to get to center and not touch retainer Last edited by Jeff Stout; 06-07-2016 at 05:38 PM. Reason: more.

06-07-2016, 06:04 PM	#3
Ken Haase Member Join Date: Mar 2007 Posts: 233 Likes: 0 Liked 1 Time in 1 Post	Re: anybody want to hazard a guess? Jeff, you are correct. Only shimming the stands further will correct roller tip to valve centerline misalignment. I called T&D, which I should have done in the first place. Thanks for your reply.