|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

09-03-2010, 01:39 PM
|
 |
|
|
Join Date: Jan 2005
Posts: 335
|
|
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!
__________________
Bill Waters
Based KCVC (Covington, GA)
RV6A - Gone, but not forgotten!
RV8 - Gone too, now winning races in the RV Gold Class!
RV4 - Flying!!!
|

09-03-2010, 07:00 PM
|
|
|
|
Join Date: Feb 2005
Location: Chesterfield, Missouri
Posts: 4,514
|
|
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.
__________________
RV-12 Build Helper
RV-7A...Sold #70374
The RV-8...Sold #83261
I'm in, dues paid 2019 This place is worth it!
|

02-19-2012, 03:20 PM
|
|
|
|
Join Date: Mar 2011
Location: fort worth,Texas
Posts: 22
|
|
Roller rockers
Are you looking for a parallel valve engine or an angle valve lycoming?
|

02-19-2012, 03:26 PM
|
 |
|
|
Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
|
|
Over 900 hrs. on my roller rockers with no problems whatsoever.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
|

02-19-2012, 03:39 PM
|
 |
|
|
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
|
|
Are we talking Roller Rockers as in post #1 or Roller Tappets?
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
|

02-19-2012, 03:57 PM
|
 |
|
|
Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
|
|
Quote:
Originally Posted by az_gila
Are we talking Roller Rockers as in post #1 or Roller Tappets?
|
I'm talking roller rocker arms.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
|

02-19-2012, 04:49 PM
|
|
|
|
Join Date: Nov 2009
Location: San Francisco, CA
Posts: 351
|
|
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?)
__________________
Kevin R. Walsh
Cozy Mk-IV
|

02-19-2012, 05:18 PM
|
 |
VAF Moderator
|
|
Join Date: Jan 2005
Location: Pine Junction, CO
Posts: 655
|
|
Quote:
Originally Posted by Mel
I'm talking roller rocker arms.
|
Please tell us about them. Who made them? Are they automotive part?
__________________
Gary "Seismo" Zilik
Pine Junction, Colorado
RV-6A N99PZ S/N 22993 SOLD
|

02-19-2012, 05:47 PM
|
 |
|
|
Join Date: Jan 2005
Location: Round Rock, TX
Posts: 3,778
|
|
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.
__________________
Reiley
Retired N622DR - Serial #V7A1467
VAF# 671
Repeat Offender / Race 007
Friend of the RV-1
Last edited by LifeofReiley : 02-19-2012 at 05:51 PM.
|

02-19-2012, 06:39 PM
|
 |
|
|
Join Date: Jun 2006
Location: 8I3
Posts: 3,564
|
|
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.
__________________
Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
Last edited by rocketbob : 02-19-2012 at 06:43 PM.
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 06:16 AM.
|