Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Oil leak from arp head bolt

Thread Tools
 
Search this Thread
 
Old 05-24-2019, 10:17 AM
  #1  
TECH Enthusiast
Thread Starter
 
blackfbird98's Avatar
 
Join Date: Aug 2006
Location: Hamlin ny
Posts: 734
Likes: 0
Received 2 Likes on 2 Posts

Default Oil leak from arp head bolt



just put my motor back together and has been running great, but have noticed the front passenger arp head bolt by the coolant pipes is seeping oil, none of the other bolts leak so I’m guessing I either forgot to use thread sealant or used too little, my question is can I just pull the bolt out clean everything up and reseal it? Or am I going to have to drain the whole block of coolant before I can take it out?
Old 05-24-2019, 12:42 PM
  #2  
TECH Enthusiast
Thread Starter
 
blackfbird98's Avatar
 
Join Date: Aug 2006
Location: Hamlin ny
Posts: 734
Likes: 0
Received 2 Likes on 2 Posts

Default

Anyone??
Old 05-24-2019, 03:23 PM
  #3  
TECH Veteran
iTrader: (2)
 
wannafbody's Avatar
 
Join Date: Apr 2006
Location: Pittsburgh
Posts: 4,615
Received 801 Likes on 611 Posts

Default

If you can reach it with a socket without removing the coolant crossover line then you should be OK.
Old 05-24-2019, 03:33 PM
  #4  
12 Second Club
iTrader: (8)
 
jlangley's Avatar
 
Join Date: Jul 2016
Location: Langley BC
Posts: 333
Received 72 Likes on 57 Posts
Default

I'm not sure how oil would leak from a head bolt. Seems more likely to be coming from above the bolt and just collecting there. Check the valve cover and valley cover, they seem more likely to be the leak point to me.
Old 05-24-2019, 04:25 PM
  #5  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 20,878
Received 3,022 Likes on 2,353 Posts
Default

It's actually physically impossible for oil to leak out of a head bolt hole, as there are no oil lines in the heads, and no way for oil to reach the outer head bolts. As was said, look elsewhere.
Old 05-24-2019, 04:46 PM
  #6  
TECH Senior Member
iTrader: (1)
 
sjsingle1's Avatar
 
Join Date: Feb 2010
Location: Fort Worth TX
Posts: 6,498
Received 215 Likes on 176 Posts

Default

leaky mani gasket ?
Old 05-24-2019, 04:59 PM
  #7  
TECH Fanatic
 
RB04Av's Avatar
 
Join Date: Dec 2017
Posts: 1,478
Received 599 Likes on 414 Posts
Default

Take the bolt out, put a bit of thread sealer w/ Teflon under the head, reinstall.
Old 05-24-2019, 07:44 PM
  #8  
TECH Senior Member
iTrader: (7)
 
Project GatTagO's Avatar
 
Join Date: Mar 2003
Location: The City of Fountains
Posts: 10,104
Received 1,393 Likes on 879 Posts

Default

Originally Posted by G Atsma
It's actually physically impossible for oil to leak out of a head bolt hole, as there are no oil lines in the heads, and no way for oil to reach the outer head bolts. As was said, look elsewhere.
This....

Andrew
Old 05-25-2019, 07:53 AM
  #9  
TECH Enthusiast
Thread Starter
 
blackfbird98's Avatar
 
Join Date: Aug 2006
Location: Hamlin ny
Posts: 734
Likes: 0
Received 2 Likes on 2 Posts

Default

If that’s the case then I’m REALLY stumped cause I looked all over and can’t see where else it would be coming from, at first I thought it was the pcv line dripping on to it but it’s completely dry, and there is no oil anywhere else
Old 05-25-2019, 08:28 AM
  #10  
TECH Senior Member
iTrader: (7)
 
Project GatTagO's Avatar
 
Join Date: Mar 2003
Location: The City of Fountains
Posts: 10,104
Received 1,393 Likes on 879 Posts

Default

Dry it really well and monitor closely.
Old 05-26-2019, 11:16 AM
  #11  
TECH Fanatic
iTrader: (10)
 
NHRATA01's Avatar
 
Join Date: Jan 2002
Location: Dutchess, New York
Posts: 1,797
Received 27 Likes on 22 Posts

Default

That's by an intake port? I think it'd be more likely to be oil in the intake seeping out of perhaps a bad seal, or maybe just a valve cover gasket weeping. As mentioned there's not really any pressurized oil passages by the head bolts.




All times are GMT -5. The time now is 09:26 PM.