VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV Ongoing Maintenance Issues
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 08-17-2015, 07:53 PM
bullojm1's Avatar
bullojm1 bullojm1 is offline
 
Join Date: Feb 2006
Location: Baltimore, MD
Posts: 895
Default

Quote:
Originally Posted by springer View Post
Mike, I have the same engine. I may have missed it but how many hours on the engine?

One of the best write ups I have seen on VAF.
Jim,

Thanks for the compliment! I felt obliged to give a thorough write-up since details on this common issue/fix seemed to be lacking in the inter-webs. 320 hours total on the new Superior IO-360 engine.
__________________
Mike Bullock
RV-7, Flying!
http://www.rvplane.com
EAA Technical Counselor
The Best FAA N-Number Availability Search Engine -TailNum.com
Reply With Quote
  #22  
Old 08-17-2015, 09:49 PM
Chkaharyer99 Chkaharyer99 is offline
 
Join Date: Oct 2011
Location: Pilot Hill, CA
Posts: 853
Default

Mike,

That was a great step by step write up. I learned much by reading it and even feel almost capable of doing the surgery should the need present itself. I hope it never does.

Thank you!
__________________
Charlie
RV-8
Reply With Quote
  #23  
Old 08-17-2015, 11:44 PM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
 
Join Date: Sep 2005
Location: Cameron Park Ca "o61"
Posts: 13,549
Default Great writeup

Mike, super writeup, very well done.

I am moving this thread to the "ongoing maintenance" forum so others can find it easier in the future.
__________________
Mike Starkey
Rv-10, N210LM.
VAF 909
EAA 512


Flying as of 12/4/2010

Phase 1 done, 2/4/2011

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
Reply With Quote
  #24  
Old 08-18-2015, 12:49 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 8,670
Smile

Quote:
Originally Posted by BobTurner View Post
Glad it's fixed.
As you now know certain certified Lycoming engines have a SB or AD mandating a "valve wobble test" every so many hours. Might be a good idea to get a hold of those instructions, they give more guidance than "the other 3 felt okay".

.....

Bob
It's not "certain" engines, it's ALL Lycoming engines.

It is SB333C (aka Wobble Test) and is on-line -

http://www.lycoming.com/Portals/0/te...0Condition.pdf

Helicopter Engines – 300 hour intervals or earlier if valve sticking suspected.
All Other Engines – 400 hour intervals or earlier if valve sticking suspected until exhaust valve guides are replaced with guides made of improved material. (Refer to latest revision of Service Instruction No. 1485.)


The SI 1485 describes the hi-silicon valve guides and extends the inspection to 1000 hrs.

http://www.lycoming.com/Portals/0/te...0Procedure.pdf

How to perform the "Lycoming Rope Trick" is described here, and it even tells you that it needs about 8 feet of 3/8 nylon rope -

http://www.lycoming.com/Portals/0/te...20Sticking.pdf


Even with all of the above and the new guides, my Tiger's O-360 had loose valve guides (too much wobble) at 600 hrs on brand new Lycoming cylinders.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Reply With Quote
  #25  
Old 08-18-2015, 06:24 AM
LettersFromFlyoverCountry's Avatar
LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,642
Default

For those of us not particularly good at making tools, can we assemble a list and source of required tools for this task?
__________________
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12 project status: Waiting for the RV-12iS fuselage subkit
Builder log
Reply With Quote
  #26  
Old 08-18-2015, 07:17 AM
bullojm1's Avatar
bullojm1 bullojm1 is offline
 
Join Date: Feb 2006
Location: Baltimore, MD
Posts: 895
Default

Quote:
Originally Posted by LettersFromFlyoverCountry View Post
For those of us not particularly good at making tools, can we assemble a list and source of required tools for this task?
Bob,

My research revealed the following valve spring compressors:

This is from Aircraft Spruce - p/n 12-21520 for $60


And another option from ACS, p/n 12-00202 for $77.


SkyGeek sells this variety for $150, p/n ATS3602


And then there is the Valve Wizard for $150. This is a really nice took as it gives you both hands free to remove the keys.



Other tools include:
1) Telescoping Magnet. Make sure to get one small enough to make it down the valve guide (1/2" diameter). The stronger the magnet, the better!
2) Mechanical Pickup (I highly suggest the lighted General Tools p/n 70396 - $8 at Lowes)
3) Pick set - the cheap one from Harbor Freight worked great for me
4) Patience!
__________________
Mike Bullock
RV-7, Flying!
http://www.rvplane.com
EAA Technical Counselor
The Best FAA N-Number Availability Search Engine -TailNum.com
Reply With Quote
  #27  
Old 08-18-2015, 07:27 AM
cajunwings cajunwings is offline
 
Join Date: Jun 2007
Location: new iberia la
Posts: 470
Default Sticking valves

Backing up to the photo in post #3 showing the red silicone protecting the oil drain back tube. The threaded rod that clamps the front and rear baffles together goes above the oil drain back tubes not below.


Don B

RV 9 Rebuild in Prohress
Reply With Quote
  #28  
Old 08-18-2015, 07:38 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 3,910
Default Trying to quantify some cause/solutions . . .

Mike, why #2 and not others? Were your CHT's higher for #2? Any other indication of temps being higher? I just wonder how much lower temps should be to reduce the carboning of the stems.

Also - what oil brand/grade are you using?

Nice write-up (as usual for you).
__________________
Bill

99% at the hangar now
Reply With Quote
  #29  
Old 08-18-2015, 08:04 AM
brad walton brad walton is offline
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 465
Default

Curious weather you have ever done a GAMI type check to see which cylinder reaches max EGT first, 2nd, 3rd, and 4th. I wonder if this cylinder is running the richest?
Great write up, Mike!
Reply With Quote
  #30  
Old 08-18-2015, 09:00 AM
kinger's Avatar
kinger kinger is offline
 
Join Date: Jan 2007
Location: USA
Posts: 250
Default

Mike,

I jumping on as well..... Fantastic wright up.....

Thank You

King
__________________
James King
RV-7
919
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:56 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.