Setting Lifter Preload - Roller rockers - ClassicOldsmobile.com

Go Back  ClassicOldsmobile.com > Repair & Restoration > Engine > Big Blocks
Setting Lifter Preload - Roller rockers >

Setting Lifter Preload - Roller rockers

Setting Lifter Preload - Roller rockers

Reply

 
 
 
Old April 17th, 2018, 01:28 PM
  #1  
Registered User
Thread Starter
 
Join Date: Mar 2011
Posts: 387
Setting Lifter Preload - Roller rockers

So Iíve read quite a few different methods of doing this. EOIC, etc. But my question to those whoíve done this is what is the simplest way of doing this procedure? Meaning the least revolutions of the crank and cam.

Iíll add that the guide plates arenít adjusted yet, so Iíd like to add that adjustment into the work flow. I know we shoot to adjust when the lifter is on the base circle. So my question is whatís the most efficient way of getting there.

Im working with flat tappet lifters (dry, not pumped up), 7/16Ē stud with polylocks, 1.65 stainless roller rockers.

I am getting the right rocker geometry with 2.8 turns of the polylock. .050Ē per turn with 7/16Ē studs. Lifter preload is right around .030Ē

thank you

Last edited by VinMichael; April 17th, 2018 at 01:53 PM.
VinMichael is offline  
Reply With Quote
Old April 18th, 2018, 07:24 AM
  #2  
Registered User
 
Join Date: Jan 2010
Location: central Indiana
Posts: 968
If you take the engine firing order and split it in half and arrange them to look like this
1843
6572
you will be able to figure out companion cylinders. Set #1 at TDC, you can adjust the valves on cylinder 1 and 6. Rotate the engine in the normal direction exactly 90*, set the valves on 8 and 5. Rotate another 90, set 4 and 7, another 90 and 3 and 2. You just set the valves with one turn of the engine. This is probably the easiest/fastest method. It helps to have a degrees balancer
matt69olds is offline  
Reply With Quote
Old April 18th, 2018, 08:17 AM
  #3  
Rodney
 
cdrod's Avatar
 
Join Date: Jun 2011
Location: Houston, TX
Posts: 1,280
^^This^^

I did mine exactly the way Matt69 described.
cdrod is offline  
Reply With Quote
Old April 18th, 2018, 10:28 AM
  #4  
Registered User
 
69455's Avatar
 
Join Date: Aug 2013
Location: DesPlaines IL
Posts: 136
Olds is the same
Attached Files
File Type: pdf
69455 is offline  
Reply With Quote
Old April 18th, 2018, 12:02 PM
  #5  
Registered User
 
jensenracing77's Avatar
 
Join Date: Feb 2009
Location: Brazil Indiana
Posts: 9,492
I am a little slower but I don't trust myself with the above. I have several friends that do it that way. I just start with hole 1 and go in the firing order one at a time. It ends up being two rounds of the crank.
jensenracing77 is online now  
Reply With Quote
Old May 10th, 2018, 10:36 PM
  #6  
Registered User
Thread Starter
 
Join Date: Mar 2011
Posts: 387
Thanks guys for your advice. I was able to make sense of this. All was put into perspective.
VinMichael is offline  
Reply With Quote
Old May 11th, 2018, 10:13 AM
  #7  
Registered User
 
Join Date: Apr 2014
Posts: 195
I've used this with AMC engines (same firing order).


http://www.pontiacstreetperformance....p/rockers.html
bw1339 is online now  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1968Cutlass_S
Big Blocks
2
March 18th, 2018 05:43 AM
AlphaOmega74
Big Blocks
8
March 17th, 2015 10:18 AM
rsandhoff
Big Blocks
8
January 27th, 2010 06:58 PM
Redog
Small Blocks
12
August 14th, 2008 07:56 PM
#1CutlassSupreme
Small Blocks
11
May 13th, 2008 11:40 AM


Thread Tools
Search this Thread
Quick Reply: Setting Lifter Preload - Roller rockers


Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.