73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Performance => Topic started by: mikewb on March 02, 2008, 07:00:42 pm

Title: rockers
Post by: mikewb on March 02, 2008, 07:00:42 pm: how tight should rocker arms be? should i be able to move them?
Title: Re: rockers
Post by: 86 chevy silverado on March 02, 2008, 07:39:25 pm: When rockers are properly adjusted (I preach 0 valve lash) the rocker will wiggle around but should not have any up and down movement, if that answers your question. Do not re-use your intake gaskets unless they were just replaced recently, old gaskets should never be reused-to answer your other question on your other thread. Its easier to ask both questions on one thread.
Title: Re: rockers
Post by: Robry 87 on March 02, 2008, 10:35:26 pm: I just built my motor and i had a heck of a time getting my just right but i can help if your stock or useing hidralik work with me i can't speel the best.
do you have a book on your motor or truck your going to need it.to know the rotion of valve seting,and my rokers still move some but not up,and down.you will won't the push rod to just turn with your fingers not loose just wear you can't turn it will make it run then will go from there.
Title: Re: rockers
Post by: Robry 87 on March 02, 2008, 11:18:38 pm: Check mesg i can help you with this be on tomarow night.
Title: Re: rockers
Post by: Captkaos on March 03, 2008, 09:59:50 am: They are going to be a little loose if the motor has been sitting since there is no pressure in the lifters. What are we working on? And what is it status? Just rebuilt, been sitting for years, etc...
Title: Re: rockers
Post by: joesgarage71 on March 09, 2008, 02:23:37 pm: They will move some side to side but not up and down(very little pressure). If the lifter is on base of the cam you can move the rocker up and down(movement from the plunger inside of the lifter, cold engine)
New parts 3/4-1 turn after zero lash, used parts 1/2 to 1/4 turn adjustment.
Title: Re: rockers
Post by: 86 chevy silverado on March 09, 2008, 06:07:46 pm: A manual will state 3/4 turn past 0 valve lash with stock parts. With performance lifters 0 to 1/4 past 0 lash is recommended, I should be more specific. That is coming from a guy that has built race motors for 20+ years, one of my mentors in the past.
Title: Re: rockers
Post by: VileZambonie on March 22, 2008, 08:06:09 pm: Quote from: 76 k10 on March 22, 2008, 08:03:07 pm
Quote from: mikewb on March 02, 2008, 07:00:42 pm
how tight should rocker arms be? should i be able to move them?
ya man man you some locktight on ummm yeeeeeeeeehaaaaaa

(http://eatourbrains.com/EoB/wp-content/uploads/2007/05/troll.jpg)
Title: rocker
Post by: mikewb on March 24, 2008, 04:33:19 pm: what tool to do you use to set rockers?
Title: Re: rocker
Post by: Captkaos on March 24, 2008, 04:55:12 pm: Are you talking about setting the lash?
Title: Re: rocker
Post by: mikewb on March 24, 2008, 05:38:30 pm: Yeah
Title: Re: rocker
Post by: Captkaos on March 25, 2008, 03:22:25 pm: Hydraulic or solid?
I am going to assume hydraulic and say you need a 5/8" wrench to get the lash out and then tighten another 1/2 turn.

Check this link: http://www.73-87.com/7387garage/drivetrain/valvlash.htm