Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

LS7 crankshaft oil plug depth

Thread Tools
 
Search this Thread
 
Old 03-10-2019, 08:51 PM
  #1  
TECH Fanatic
Thread Starter
iTrader: (23)
 
QwkTrip's Avatar
 
Join Date: Sep 2010
Location: USA
Posts: 1,318
Likes: 0
Received 397 Likes on 289 Posts

Default LS7 crankshaft oil plug depth

What is the correct install depth of the crankshaft oil plug in an LS7 crankshaft? I think mine has been knocked backwards.
Old 03-10-2019, 09:10 PM
  #2  
TECH Fanatic
Thread Starter
iTrader: (23)
 
QwkTrip's Avatar
 
Join Date: Sep 2010
Location: USA
Posts: 1,318
Likes: 0
Received 397 Likes on 289 Posts

Default

For reference, my plug is 2.0" from the outer most part of the hub pilot, and 1.7" from the flywheel mounting face of the crankshaft.
Old 03-11-2019, 09:09 PM
  #3  
TECH Fanatic
Thread Starter
iTrader: (23)
 
QwkTrip's Avatar
 
Join Date: Sep 2010
Location: USA
Posts: 1,318
Likes: 0
Received 397 Likes on 289 Posts

Default

From what I can tell, the plug just sees oil splash and the galley is not pressurized; so if the plug is seated firm and square then don't worry about it.
Old 03-11-2019, 09:14 PM
  #4  
ModSquad
iTrader: (6)
 
Che70velle's Avatar
 
Join Date: Jan 2012
Location: Dawsonville Ga.
Posts: 6,319
Received 3,365 Likes on 2,083 Posts

Default

Qwk, are you talking about the glued in plug, in the center of the crank, behind the pilot bearing?
if so, you are correct. It does not see oil pressure, but needs to be sealed off for crankcase pressure. I don’t think there is a dedicated dimension depth for that plug. I’ve seen guys use just silicon to fill that hole...if I’m talking about the same plug you are referring to.
Old 03-11-2019, 09:57 PM
  #5  
TECH Fanatic
Thread Starter
iTrader: (23)
 
QwkTrip's Avatar
 
Join Date: Sep 2010
Location: USA
Posts: 1,318
Likes: 0
Received 397 Likes on 289 Posts

Default

Yep, that's the plug. I didn't realize it was glued in place. What kind of glue do they use?
Old 03-12-2019, 03:42 PM
  #6  
ModSquad
iTrader: (6)
 
Che70velle's Avatar
 
Join Date: Jan 2012
Location: Dawsonville Ga.
Posts: 6,319
Received 3,365 Likes on 2,083 Posts

Default

Originally Posted by QwkTrip
Yep, that's the plug. I didn't realize it was glued in place. What kind of glue do they use?
I don’t know what is used to seal that plug. RTV? Silicone? My Callies crank looks like clear silicone.
Old 03-13-2019, 06:49 PM
  #7  
TECH Fanatic
Thread Starter
iTrader: (23)
 
QwkTrip's Avatar
 
Join Date: Sep 2010
Location: USA
Posts: 1,318
Likes: 0
Received 397 Likes on 289 Posts

Default

Thanks, bud! Seems you always step in to help me and I appreciate that!




All times are GMT -5. The time now is 08:51 PM.