Go Back  Offshoreonly.com > Technical > General Q & A
why stainless steel rocker arms? >

why stainless steel rocker arms?

Notices

why stainless steel rocker arms?

Thread Tools
 
Old 01-10-2016, 05:58 PM
  #21  
Gold Member
Gold Member
iTrader: (5)
 
Full Force's Avatar
 
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,634
Likes: 0
Received 204 Likes on 132 Posts
Default

hope so, I have them... lol

Originally Posted by mike tkach
i just want to say don,t be afraid of the scorpian endurance arms and all they make is made in the usa with american materials.i will spend a few xtra bucks to buy american made parts.
Full Force is offline  
Old 01-10-2016, 07:02 PM
  #22  
Platinum Member
Platinum Member
iTrader: (1)
 
14 apache's Avatar
 
Join Date: Apr 2005
Location: Northport N.Y.
Posts: 2,139
Received 10 Likes on 10 Posts
Default

Originally Posted by GPM
Just curious, can anyone actually answer the posters question,
I don't know the reason but I think it might have to do with the heat treat process.
14 apache is offline  
Old 01-10-2016, 07:15 PM
  #23  
Registered
iTrader: (3)
 
Join Date: Jul 2004
Location: chicago
Posts: 11,332
Received 71 Likes on 39 Posts
Default

Originally Posted by 14 apache
I don't know the reason but I think it might have to do with the heat treat process.
or the weight maybe
MILD THUNDER is offline  
Old 01-10-2016, 07:28 PM
  #24  
VIP Member
VIP Member
 
Join Date: Aug 2010
Location: Stockton, CA
Posts: 153
Likes: 0
Received 0 Likes on 0 Posts
Default

Steel rockers tend to be recommended for serious valve spring pressure where in open pressures are 800lbs and beyond .. I've ran crower on shaft set ups the went back to jesels for offsets at the push rod tip . Just strength for steel and stainless .. Trunion is still another conversation and most mfg will rebuild your rockers
cmattj is offline  
Old 01-10-2016, 07:40 PM
  #25  
Registered
Platinum Member
 
Join Date: Mar 2008
Location: Vancouver BC
Posts: 1,181
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Cole2534
I was pondering this recently- why choose stainless steel for a rocker arm material and not another steel alloy like 4140?
I would think it's just an option for corrosion resistance. Under the valve covers is where you'll find any condensation, whether it's from a little reversion, or just a cold block and not enough oil temp. This time of year, every engine I dyno ends up with a little milky oil under the breathers, and bottom of the fill plug just from the air temp.
HaxbySpeed is offline  
Old 01-10-2016, 08:39 PM
  #26  
Registered
 
Join Date: Jan 2007
Location: Murrayville Georgia
Posts: 1,818
Likes: 0
Received 892 Likes on 320 Posts
Default

this would be a good question for a metallurgist. is it possible that it has to do with elasticity or some such thing? I would think that the metal used would need to have a minute amount of give in it vrs something super hard that would tend to crack over time.
compedgemarine is offline  
Old 01-10-2016, 10:14 PM
  #27  
GPM
Registered
 
Join Date: Mar 2004
Location: Pa
Posts: 2,663
Received 80 Likes on 58 Posts
Default

I wish Dave Crower was still around, maybe he could tell us why they starting using stainless about 30 or so years ago.
GPM is offline  

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 © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.