Valve Adjustment - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old Jan 6th, 06, 04:24 PM Thread Starter
Gold Lifetime Member
vince
 
Join Date: Dec 2005
Location: metairie. LA.
Posts: 159
Valve Adjustment

I hope to start up my engine this weekend, but i have a couple of questions. As a starting point for adjusting the valves, I tightened the rocker arm nuts by first rotating engine till the lifter is at the lowest point. Then i tighten so the pushrod cannot be spun, then about another 1/8 turn. I did this for all the valves. Also i'm not sure what sparkplug and gap to use. I have the aluminum angleplug heads, 58cc, casting# 10088113. Engine is a 350. Any input is appreciated.
I dont know if it is important but the lifters are roller lifters.

Last edited by vrdanna; Jan 6th, 06 at 04:31 PM. Reason: additional info
vrdanna is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Jan 7th, 06, 06:10 AM
Senior Tech
Bob
 
Join Date: Dec 2000
Location: Ct.
Posts: 1,145
Re: Valve Adjustment

You don't want the pushrods tightened until they don't spin, that is too tight. Tighten them until the up down slop is taken out of the rocker arm + a 1/4 to 1/2 a turn if this is a hydraulic lifter cam. Solids are different.
I would do a search for the EO/IC valve adjustment method, it is the best one to use in my opinion.

Bob
Garnet Red 69/SS396/TH400/355 Posi Sold
'02 triple blk Vette Vert. now
94 HD Dyna Wideglide
phel69 is offline  
post #3 of 4 (permalink) Old Jan 7th, 06, 07:28 AM
Senior Tech
Dave
 
Join Date: Oct 2005
Location: Rhode Island
Posts: 1,356
Re: Valve Adjustment

I assume you're talking about hydraulic lifters.......

Your intial procedure is correct, that is, get the lifter on the low spot on cam lobe. Then, tighten nut until all play is just barely out of pushrod. You can feel it easy as the pushrod will spin by hand with no effort if it's too loose, then as you adjust nut down, there will be a small amount of effort required to rotate pushrod. This is zero lash. Getting an accurate "zero lash" is the most important part of the process. By tightening the pushrods until you can't turn them, you may actually have gone well beyond zero lash......

Once zero lash is established, I normally go about 1/8 turn more for hydraulic lifters.

-

Dave F. in Rhode Island
'68 Camaro SS Accel DFI 454 (SOLD - I'm a boring Corvette owner now)
Bought my first big-block Chevy in 1970
Chevy-SS is offline  
 
post #4 of 4 (permalink) Old Jan 7th, 06, 08:15 AM Thread Starter
Gold Lifetime Member
vince
 
Join Date: Dec 2005
Location: metairie. LA.
Posts: 159
Re: Valve Adjustment

Thanks guys, I'll take the advice and redo the procedure later today.
vrdanna is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome