Go Back  Offshoreonly.com > Technical > General Q & A
500 hp valve adjustment >

500 hp valve adjustment

Notices

500 hp valve adjustment

Thread Tools
 
Old 03-22-2010 | 08:31 AM
  #1  
Thread Starter
Registered
 
Joined: Jul 2002
Posts: 2,233
Likes: 1
From: pa
Default 500 hp valve adjustment

what is the procedure as far as what cylinders and valves can be adjusted at tdc and then rotate and so on. Thanks
rssteiny is offline  
Reply
Old 03-22-2010 | 08:41 AM
  #2  
Registered
 
Joined: May 2007
Posts: 1,272
Likes: 0
From: Georgetown, TX
Default

easiest way and not get confused is to run through each cylinder at at time. When the exhaust starts to open, adjust the intake. when the intake starts to close, adjust the exhuaust. Takes a bit longer but is much easier IMO
Griswald is offline  
Reply
Old 03-22-2010 | 09:00 AM
  #3  
Registered
15 Year Member
 
Joined: Oct 2007
Posts: 8,439
Likes: 93
From: yorkville,il
Default

Originally Posted by Griswald
easiest way and not get confused is to run through each cylinder at at time. When the exhaust starts to open, adjust the intake. when the intake starts to close, adjust the exhuaust. Takes a bit longer but is much easier IMO
i agree,this is how i do it.
mike tkach is offline  
Reply
Old 03-22-2010 | 11:04 AM
  #4  
Registered
 
Joined: Mar 2003
Posts: 365
Likes: 0
From: Manassas Va.
Default

Crane cams had the how-to (adjust hyd. valves) step by step posted on their web site before they money issues. I used it,and it worked great. Make sure you go 3/4 turn to 1 turn or you will be pulling the valve covers back off.
45SS is offline  
Reply
Old 03-22-2010 | 12:47 PM
  #5  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,232
Likes: 2,482
From: Omaha/LOTO
Default

Here is the Crane link. http://www.cranecams.com/?show=techarticle&id=2

It is much easier to adjust the valves before the intake manifold is installed. This way you can actually see if the lifter plunger is depressing at all.
Griff is offline  
Reply
Old 03-22-2010 | 04:26 PM
  #6  
blue thunder's Avatar
Registered
20 Year Member
 
Joined: Nov 2001
Posts: 3,393
Likes: 6
From: IBX
Default

Here is the most efficient way and also the way I do it. Starting with number 1 cyl turn engine over until the intake valve closes then go another 1/8 turn or so on the crank. Adjust both valves. Proceed to #3. You will only need to turn the crank a small amount, 1/4 turn or so and the intake will be coming off the lobe on #3 and on the base circle. Proceed in this order 1, 3, 5, 7, 2, 4, 6, 8. You will only need to turn the the crank a small amount as you go to each subsequent cylinder in this order until you get to #8. Then you have to go about 1 full crank revolution to get the #8 intake lifter off the lobe. Works every time and doing it after the intake valve closes gives lots of room to make sure no valves are open. You have the compression and power strokes next up after the intake stroke.
blue thunder is offline  
Reply
Old 03-22-2010 | 06:03 PM
  #7  
Registered
 
Joined: Sep 2009
Posts: 71
Likes: 0
From: Fort Worth, Texas
Default

X's 2 on blue thunders method. The other way is to slow. This is how seasoned mechanics do it.
Greenkeeper is offline  
Reply
Old 03-22-2010 | 06:21 PM
  #8  
Registered
 
Joined: Aug 2005
Posts: 6,306
Likes: 1
From: Between A Womans Leggs in IL
Default Fixx

I use a dial indicator on all my rockers until i find zero lash then pre set the lifter .025..takes longer but i know their all the same..i also do it griiff's way with the intake off,then all the rockers are numbered and double set screwed so they dont move when i loosen them when my motors sit over the winter so theirs no spring pressure on the valve springs..then come summer their already set so i just tighten them up..

Last edited by FIXX; 03-22-2010 at 06:26 PM.
FIXX is offline  
Reply

Posting Rules
You may not post new threads
You may not 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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.