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

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

That is some sexy rocker covers.

Give Teague Custom Marine a call they would definitely know what fits and what's best for your application.

had same problem with the cranes went with comp pro magnums

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.

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!

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 can’t give you a solid answer but perhaps a direction to follow.

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