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  #1  
Old 09-03-2010, 01:39 PM
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rvpilot rvpilot is offline
 
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Default Roller rockers for Lycomings....

A while back there was some activity on roller rockers for our Lycomings. I have checked both sources listed in these posts to no avail. Anyone got some current information on any roller rockers that may be available?
This has become of particular interest to me after seeing the valve guide wear on my engine. As I understand from Mel in these older posts, the ones on his engine have virtually stopped this problem.
Thanks!
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  #2  
Old 09-03-2010, 07:00 PM
David-aviator David-aviator is offline
 
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Default

My engine has the rollers. Running fine but not much time yet.

It is my understanding they are not a retrofit item for older engines - at least not the Lycoming system. There was a roller up grade some years ago but I don't know if anything ever came of it.
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  #3  
Old 02-19-2012, 03:20 PM
scarter770 scarter770 is offline
 
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Default Roller rockers

Are you looking for a parallel valve engine or an angle valve lycoming?
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  #4  
Old 02-19-2012, 03:26 PM
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Over 900 hrs. on my roller rockers with no problems whatsoever.
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  #5  
Old 02-19-2012, 03:39 PM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
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Question

Are we talking Roller Rockers as in post #1 or Roller Tappets?
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  #6  
Old 02-19-2012, 03:57 PM
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Quote:
Originally Posted by az_gila View Post
Are we talking Roller Rockers as in post #1 or Roller Tappets?
I'm talking roller rocker arms.
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USAF Vet, High School E-LSA Project Mentor.
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  #7  
Old 02-19-2012, 04:49 PM
krwalsh krwalsh is offline
 
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Location: San Francisco, CA
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Default We'd do it

For the decreased side load on the guide, we'd do it. (Parallel-valve O-360)

Price would have to be right, of course. I thought I had read that there was an automotive roller rocker that actually fit (Chevy, perhaps?)
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  #8  
Old 02-19-2012, 05:18 PM
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zilik zilik is offline
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Quote:
Originally Posted by Mel View Post
I'm talking roller rocker arms.
Please tell us about them. Who made them? Are they automotive part?
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  #9  
Old 02-19-2012, 05:47 PM
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LifeofReiley LifeofReiley is offline
 
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I'm running steel heat treated roller rockers on my Lyco and love them. We were going to put them in production last year, not enough interest it seemed... parallel valve Lycos only.
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Last edited by LifeofReiley : 02-19-2012 at 05:51 PM.
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  #10  
Old 02-19-2012, 06:39 PM
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rocketbob rocketbob is offline
 
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I have a couple of sets of aluminum roller rockers that I have had made. They have adjustable cups and use a tapered pushrod to increase valve lift. Have not tested them yet.

FWIW hi-chrome guides will eliminate having to comply with SB 388, since they significantly reduce guide wear. So the roller rockers are of little benefit unless you're doing what I'm doing.
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Last edited by rocketbob : 02-19-2012 at 06:43 PM.
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