VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 01-13-2022, 07:57 AM
chiricuca chiricuca is offline
 
Join Date: Jun 2008
Location: Madrid, Spain
Posts: 53
Default Connecting Rod lubrication

My colleage is worried about the aspect of connecting rod in two rear cylinders (3 and 4). He consider that is not enough lubrication at this point and is proposing me to make a hole in the top (1 or 2 mm) to let the oil fluid there. As I don't understand a lot about and I'm affraid to "touch" this important component of the engine, I would like to know if the gurus of Lycoming can give me their oppinions about. The engine is Lycoming O-320-D1A with 300 hours aprox.
In one of the picture I marked with an arrow the point in which he wants to drill the hole.

https://flic.kr/p/2mX1ogC
https://flic.kr/p/2mWZPmY

Your comments will be very appreciated. Thank you.

Last edited by chiricuca : 01-13-2022 at 08:10 AM.
Reply With Quote
  #2  
Old 01-13-2022, 08:05 AM
rv8ch's Avatar
rv8ch rv8ch is offline
 
Join Date: Feb 2005
Location: LSGY
Posts: 4,634
Default

Quote:
Originally Posted by chiricuca View Post
My colleage is worried about the aspect of connecting rod in two rear cylinders (3 and 4). He consider that is not enough lubrication at this point and is proposing me to make a hole in the top (1 or 2 mm) to let the oil fluid there. As I don't understand a lot about and I'm affraid to "touch" this important component of the engine, I would like to know if the gurus of Lycoming can gice me their oppinions about. The engine is Lycoming O-320-D1A with 300 hours aprox.
In one of the picture I marked with an arrow the point in which he wants to drill the hole.




Your comments will be very appreciated. Thank you.
Hola, no tengo foto...
__________________
Mickey Coggins
Fresh Ukraine update from RV-6 owner Alex 6 May 2022!
http://www.rv8.ch/help-people-in-ukraine/
"Hello, world!"
Reply With Quote
  #3  
Old 01-13-2022, 08:08 AM
chiricuca chiricuca is offline
 
Join Date: Jun 2008
Location: Madrid, Spain
Posts: 53
Default

Yes. I am fighting to insert them. I will insert the link by the moment. Sorry
Reply With Quote
  #4  
Old 01-13-2022, 08:43 AM
Avanza Avanza is offline
 
Join Date: Jul 2020
Location: Vastervik Sweden
Posts: 139
Smile Oil squirts

From the pictures it looks that the engine is prepared for the mounting of
oil squirts. There is 4 Allen screws, one for each cylinder, that can be removed.
The purpose is to spray oil on the underside of the pistons cooling them.
If you have a high horse power conversion or live in hot climate this can be
a good thing. Note that if you install oil squirts you may have to install
a slightly bigger oil cooler.

Good Luck
Reply With Quote
  #5  
Old 01-13-2022, 09:06 AM
chiricuca chiricuca is offline
 
Join Date: Jun 2008
Location: Madrid, Spain
Posts: 53
Default

Thank you for all your answers.
Reply With Quote
  #6  
Old 01-13-2022, 11:05 AM
Taltruda Taltruda is offline
 
Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 1,137
Default

Is he suggesting to drill a hole in the small end of the connecting rod for oil to get into the bushing? I know some automotive engines have a hole there, but there are thousands of Lycoming engines flying around without it, and they don’t seem to fall out of the sky from not having a hole there. I wouldn’t do that.. just put it back together and fly it.
__________________
Tom
Las Vegas
RV-4 flying…
RV-8 empenage finished 10-2020

Wings Started.. 11-2020

Last edited by Taltruda : 01-13-2022 at 11:08 AM.
Reply With Quote
  #7  
Old 01-13-2022, 01:27 PM
airguy's Avatar
airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,816
Default

Is your "colleague" a Lycoming representative? If not, I don't think I would drill the hole.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2022 dues paid
N16GN flying 1,000 hrs and counting on 91E10; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Pending Repeat Offender - 10 kit is on order. TDI? Turbine? Stay tuned!
Reply With Quote
  #8  
Old 01-13-2022, 05:24 PM
Bruce's Avatar
Bruce Bruce is offline
 
Join Date: Feb 2006
Location: Anywhere, USA
Posts: 1,195
Default

Quote:
Originally Posted by Taltruda View Post
Is he suggesting to drill a hole in the small end of the connecting rod for oil to get into the bushing? I know some automotive engines have a hole there, but there are thousands of Lycoming engines flying around without it, and they don’t seem to fall out of the sky from not having a hole there. I wouldn’t do that.. just put it back together and fly it.
X about 5 if I was making decision
__________________
Bruce (BOOMER) Pauley
Kathy (KAT) Pauley

RV 7A--"MISS MARIE"--- N177WD (SOLD FLYING)72742
VAF #582-----------------EAA LIFETIME MEMBER
EX -KC-135A -------------BOOM OPERATOR #3633
VAN'S FLIGHT------------#6930

RETIRED————————-Enjoying life

See you in OSHKOSH


http://www.mykitlog.com/users/index....ley&project=84


=VAF= 2006-2022 DUES PAID
Reply With Quote
  #9  
Old 01-13-2022, 06:42 PM
BH1166 BH1166 is offline
 
Join Date: Nov 2017
Location: Eatonton Georgia
Posts: 694
Default No

No Lycoming guru, but no to your question.
__________________
Butch
RV6A Purchased N72TX
Reply With Quote
  #10  
Old 01-14-2022, 03:59 PM
PhatRV PhatRV is offline
 
Join Date: Mar 2018
Location: Buena Park, California
Posts: 780
Default

This what the oil hole on the automotive connecting rod looks like. I don't know anything about the oil lubrication design but just want to show everyone what your friend wants to do. If your friends engine has high CHT on cylinders 3&4, has he investigated the baffling material, try the DanH #3 cylinder mod? Maybe doing something less drastic first before doing major surgery.

Best of good luck.
Attached Thumbnails
Click image for larger version

Name:	Capture.jpg
Views:	65
Size:	14.6 KB
ID:	20990  
__________________
RV8 standard build: 90% completed (90% to go)
Waiting to install wings to fuselage.
Days to Final Installation: 999
Days to AWC: 999
Days to First Flight: 999

Donation paid through 2022
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 05:31 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.