Go Back  Offshoreonly.com > Technical > Restorations & Upgrades
Roller Rocker Options >

Roller Rocker Options

Notices

Roller Rocker Options

Old 03-03-2021, 06:34 AM
  #1  
Registered
Thread Starter
 
Join Date: Sep 2018
Posts: 101
Likes: 0
Received 4 Likes on 4 Posts
Default Roller Rocker Options

Rather then playing a guessing game with this figured I would ask the community. What roller rockers is everyone running that fit under stock valve covers, I have a pair of carbon fiber valve covers from a 1075 and want to keep them but also run roller rockers. Let me know what you are running. Thanks in advance.



-Nick
Big_Baller is offline  
Old 03-03-2021, 09:34 AM
  #2  
Registered
 
Join Date: Dec 2007
Location: Solana Beach,CA
Posts: 832
Likes: 0
Received 26 Likes on 18 Posts
Default

Definitely not gold CRANES that Merc used from the factory. Picking and counting the needle bearings outta the cam galley is not fun. I don't think I was the only boat that happened to. I went with Scorpion titanium. They fit under the factory 700SCI valve covers..
fossil fuel is offline  
Old 03-03-2021, 09:45 AM
  #3  
Registered
Thread Starter
 
Join Date: Sep 2018
Posts: 101
Likes: 0
Received 4 Likes on 4 Posts
Default

Originally Posted by fossil fuel View Post
Definitely not gold CRANES that Merc used from the factory. Picking and counting the needle bearings outta the cam galley is not fun. I don't think I was the only boat that happened to. I went with Scorpion titanium. They fit under the factory 700SCI valve covers..
where can I find the Scorpion titanium's ? cant find them on their site.

-Nick
Big_Baller is offline  
Old 03-03-2021, 11:51 AM
  #4  
Registered
 
Join Date: Jul 2009
Posts: 307
Received 44 Likes on 32 Posts
Default

That is some sexy rocker covers.
SabrToothSqrl is offline  
Old 03-03-2021, 07:10 PM
  #5  
Registered
 
Join Date: Apr 2007
Location: Ontario
Posts: 494
Received 15 Likes on 9 Posts
Default

Give Teague Custom Marine a call they would definitely know what fits and what's best for your application.
bigfarmer is offline  
Old 03-03-2021, 08:00 PM
  #6  
Registered
 
Join Date: Sep 2016
Location: freeburg illinois
Posts: 32
Likes: 0
Received 3 Likes on 3 Posts
Default

had same problem with the cranes went with comp pro magnums
fastenuff2 is offline  
Old 03-04-2021, 07:05 AM
  #7  
Registered
 
Join Date: Mar 2014
Location: fort myers fla
Posts: 161
Received 20 Likes on 17 Posts
Default

Have you looked into Yella Terra? I have used them for years in various high rpm drag racing motors & have never had a failure. Just a suggestion.
smashm is offline  
Old 03-04-2021, 08:00 AM
  #8  
Registered
 
Join Date: Apr 2004
Location: Michigan
Posts: 1,195
Received 118 Likes on 49 Posts
Default

I know many will disagree with me on this but so be it. When I built my 502s for the 38 Cat 21 years ago, I decided to buy USA built parts. I installed Harland Sharp Roller rockers and they have preformed flawlessly for the past 21 years, the engines are procharged and will run at 5-54K for extended runs, I closely inspect them for wear and have not had to send them back for rebuilds yet. running a mild cam at 237/243 625 lift. They have the Diamond series that I would recommend for normal grind cams with up to 500lbs open pressure..
Let the bashing begin, I'm ready!
abones is offline  
Old 03-04-2021, 10:17 PM
  #9  
Registered
iTrader: (1)
 
Join Date: Oct 2013
Location: SF Bay Area
Posts: 2,843
Received 122 Likes on 83 Posts
Default

I went with the Comp Cams Ultra Pro Magnums and they nearly fit under the stock low profile covers. I believe they also make shorter lock nuts that would've allowed it to happen. I canít give you a solid answer but perhaps a direction to follow.
Baja Rooster is offline  
Old 03-08-2021, 06:14 PM
  #10  
Registered
 
OPIE272's Avatar
 
Join Date: Oct 2002
Location: Texas
Posts: 260
Received 9 Likes on 4 Posts
Default

Scorpion rollers from SummitRacing.
Look for the marine 1.7 version.
Scorpion Endurance Marine Series 4014 7/16
I was told that is what Merc uses on their 1050 motors.

Fit under aluminum Hardin Xtreme Series Valve cover 620-44050 angle cut covers just fine

Last edited by OPIE272; 03-08-2021 at 06:18 PM.
OPIE272 is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.