Rockers are hitting Retainers....?? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 07-01-2008, 06:36 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
what are the chances my studs will be too short?... when I put the rockers on now there is not an abundance of threads to grab hold of... and the locks don't lock all that well... how hard should it be to turn after you lock it down?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 07-01-2008, 06:40 PM
coldknock's Avatar
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 43
Posts: 1,528
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Anything is possible. Get the correct pushrods first.

Check the thread engagament on the stud/polylock afterward and if it's not at least 3/8" then you'll need longer studs.



Larry
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 07-01-2008, 07:36 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
i'm looking at only 3/8" now... so longer push rods most likely mean longer studs... one more thing to add to the list... its getting to be a long list on a build that isn't that wild and I never would have imagined to have issues at every turn... i hear golf is fun and i can probably buy a nice set of clubs for what i've got in this thing, but will it put a smile on my face
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 07-01-2008, 07:52 PM
coldknock's Avatar
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 43
Posts: 1,528
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Kinda hard to get tire smoke from a Big Bertha.



Larry
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 07-01-2008, 07:53 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
yes... and my luck it would be too short to..... sigh....
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 07-01-2008, 09:25 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,399
Wiki Edits: 0

Thanks: 29
Thanked 470 Times in 427 Posts
Rockers hitting retainers

I agree with Coldknock, judging from the pics you posted the pushrods you have are too short. This is confirmed by the fact that the pics show the roller contact starting too far inboard( lifter valley side ) and moving too far to the outboard side at full lift. I would expect that with the parts you have that the correct pushrod length will fall in the 7.85"-7.90" range, and will require the use of longer rocker arm studs.
Just for future reference, Crane's recommendations would have been closer to correct if you would have had the spring pads on the heads machined deeper to allow you to achieve the desired installed height using a standard length valve, if the Sportsman II's have enough material to allow it.
Most experienced racers don't buy "matched kits" because they know that there are too many variables for a "one size fits all" kit to cover. Most mix and match parts (and brands) to fit their requirements and budget.
Don't get too hung up on everything being the same brand.

Last edited by ericnova72; 07-01-2008 at 09:26 PM. Reason: spelling
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 07-02-2008, 08:56 AM
Stroke Meister
 
Last photo:
Join Date: Mar 2007
Location: MI, USA
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
one more thing to add to the list... its getting to be a long list on a build that isn't that wild and I never would have imagined to have issues at every turn
This is why measurements are CRITICAL. When you change one thing it affects others, especially in the valve train. Perhaps your list wasn't yet finished.
Reply With Quote Quick reply to this message
  #23 (permalink)  
Old 07-02-2008, 08:40 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
Just for laughs... and you have too... I dropped a 7.80 push rod in...
pic 1 is closed, 2 open... looks worse??? and trunion is tight against retainer...
Attached Thumbnails
Click image for larger version

Name:	DSCN0931.JPG
Views:	78
Size:	156.4 KB
ID:	30934   Click image for larger version

Name:	DSCN0937.JPG
Views:	78
Size:	135.4 KB
ID:	30935  
Reply With Quote Quick reply to this message
  #24 (permalink)  
Old 07-02-2008, 09:13 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,399
Wiki Edits: 0

Thanks: 29
Thanked 470 Times in 427 Posts
Don't know what you mean by worse, geometry looks better to me, but the pushrod still isn't long enough. You are moving in the right direction, but looks to need another .050-.100" longer. As far as the retainer to rocker body interference, these are the Diecast Crane Energizer rockers-correct?? They often need grinding for clearance. My stepbrother had to grind his, which totally turned me off to ever using these rockers myself, and he was using a 1.44" Crower spring. Maybe having .060-.080" machined off the retainer diameter would help, there is plenty of material there for this as the 1.460" spring only really needs a 1.380" retainer o.d.
Reply With Quote Quick reply to this message
  #25 (permalink)  
Old 07-02-2008, 09:24 PM
SSedan64's Avatar
Registered User
 
Last photo:
Join Date: Dec 2007
Location: Macon, GA.
Age: 50
Posts: 6,016
Wiki Edits: 0

Thanks: 0
Thanked 46 Times in 46 Posts
Yes that does look slightly better. Only .035" longer than the ones in the other Pics. Looks like another .100" would be close.
Reply With Quote Quick reply to this message
  #26 (permalink)  
Old 07-02-2008, 09:28 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
I'll pull the guide plate and use an adjustable rod... looks like I will need to take quite a bit off the rockers or get something slimmer in the trunion area...
Reply With Quote Quick reply to this message
  #27 (permalink)  
Old 07-02-2008, 09:38 PM
Stroke Meister
 
Last photo:
Join Date: Mar 2007
Location: MI, USA
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I don't know what you have going on, but I've run 1.625 springs on sbc's with nothing like what you have there. Please note everything you have, from valve to cam - all parts used. Also, show the entire rocker in one of those side shots. How are you determining your pushrod length? I had a sbc dart headed mill that used an 8.2" for correct geometry.
Quote:
+0.100 valve were to get close to the correct spring installed height
When you move the valve tip up (+.100), the rocker stud and valve tip move towards each other - they are not parallel. This means you have to move the trunion up higher for geometry to be right, also moving the rocker body closer to the valve and it's associated hardware. What installed height do you currently have, and how far from coil bind are you at max lift? What springs? do you have?
Quote:
looks like I will need to take quite a bit off the rockers or get something slimmer in the trunion area...
or a smaller diameter spring like these about $150 you'd be in the clear aside from the geometry thing.

Last edited by Stroke; 07-02-2008 at 09:44 PM.
Reply With Quote Quick reply to this message
  #28 (permalink)  
Old 07-03-2008, 12:13 AM
Registered User
 
Last photo:
Join Date: Jun 2007
Location: TN.
Posts: 287
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
once you get longer studs and push rods you will find the rockers most likely will clear the retainer. the sportsman 11 heads have a thicker deck=longer rods. .100 over valves=longer rods.

sam-missle
Reply With Quote Quick reply to this message
  #29 (permalink)  
Old 07-03-2008, 05:31 PM
nastynova's Avatar
Member
 
Last photo:
Join Date: Dec 2002
Location: USA
Age: 49
Posts: 240
Wiki Edits: 0

Thanks: 0
Thanked 4 Times in 4 Posts
Cam = Crane #110981
Lifter = Crane #99250
P. Rod = Crane #11621
Rocker = Crane #11744
Retainer = Crane #99943
Spring = Crane #99877 @ 1.83 installed height (spec is 1.85)
Valves = Milodon Mega Flow #45016 Intake \ #45046 Exhaust
Dart Sportsman II heads
have not measured coil bind... looks far from it...

Agree that going longer is tightening things up on rocker, valve centerline and rocker stud centerline converge so is going to.
Attached Thumbnails
Click image for larger version

Name:	DSCN0944.JPG
Views:	107
Size:	163.7 KB
ID:	30945  
Reply With Quote Quick reply to this message
  #30 (permalink)  
Old 04-02-2009, 07:43 PM
Registered User
 
Join Date: Feb 2009
Location: Kansas
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
anyone still watching this?

Was curious what you came up with / ended up doing to solve problem of rocker arm hitting spring? I am having same problem with RHS protorker heads and Comp cams magnum roller tip rockers 1.5 ratio, but looks to me. moving everything up (longer pushrod/longer stud) will throw off my geometry.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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 for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Rockers and valve covers Bluepen Engine 5 04-17-2008 07:23 PM
SBC Solid Cam, Rockers Hitting Valve Covers?! ezobens Engine 11 05-01-2007 01:24 PM
Considering 1.6 rockers 302 Z28 Engine 3 07-25-2006 06:04 AM
Proform roller rockers! *** is wrong? Sagacious Engine 21 11-23-2005 02:58 PM


All times are GMT -6. The time now is 03:22 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.