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intake manifold bolts weeping #2064016 04/29/16 02:27 PM 04/29/16 02:27 PM
Joined: Jun 2003 Posts: 72 H Hangtowner OP member
Hangtowner OP member H Joined: Jun 2003 Posts: 72	On a 440 cast iron intake manifold, a couple of the bolt heads are weeping oil. The factory parts book is unclear to me if washers should be used under the bolt heads. I plan to put a light coat of Ultra rtv on the threads and reinstall one at a time to avoid a vacuum leak. Should I use hardened steel washers?

Re: intake manifold bolts weeping [Re: Hangtowner] #2064021 04/29/16 02:31 PM 04/29/16 02:31 PM
Joined: Jan 2003 Posts: 74,937 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,937 U.S.S.A.	Washers wouldn't hurt, I wouldn't use RTV though. I wonder if you have a vacuum leak, what is drawing the oil against gravity ? running up my post count some more .

Re: intake manifold bolts weeping [Re: Hangtowner] #2064087 04/29/16 04:04 PM 04/29/16 04:04 PM
Joined: Oct 2007 Posts: 3,869 Oregon hooziewhatsit master
hooziewhatsit master Joined: Oct 2007 Posts: 3,869 Oregon	Definitely don't want RTV. When you remove the bolts later, little balls of dried stuff can fall into the engine and go where they shouldn't. I use permatex high-tack to seal them. If you ever find yourself in a fair fight, your tactics suck.

Re: intake manifold bolts weeping [Re: Hangtowner] #2064102 04/29/16 04:50 PM 04/29/16 04:50 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	The bolt holes are open to the oil inside the head / valve cover area. I use ACE hardware #4047429 pipe thread compound on the bolt threads. http://acehardwaremaldives.com/product/plumbing/4047429/#.VyOp6P5MHcs It is supposed to withstand oil and gas and temperatures to 500 degrees.

Re: intake manifold bolts weeping [Re: Hangtowner] #2064128 04/29/16 05:52 PM 04/29/16 05:52 PM
Joined: Jan 2003 Posts: 25,720 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,720 Rio Linda, CA	Weeping intake bolts mean you're building crankcase pressure. https://www.pegasusautoracing.com/productselection.asp?Product=3245 The INTERNET, the MISinformation superhighway

Re: intake manifold bolts weeping [Re: Hangtowner] #2064264 04/29/16 09:22 PM 04/29/16 09:22 PM
Joined: Oct 2005 Posts: 8,853 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,853 Ontario, Canada	Ehrenberg says they should be sealed with nothing but pipe thread sealant. Makes sense.

Re: intake manifold bolts weeping [Re: Hangtowner] #2064355 04/29/16 11:16 PM 04/29/16 11:16 PM
Joined: Jun 2003 Posts: 72 H Hangtowner OP member
Hangtowner OP member H Joined: Jun 2003 Posts: 72	Ok, I will use pipe thread sealant. Thanks, guys.

Re: intake manifold bolts weeping [Re: John_Kunkel] #2064361 04/29/16 11:24 PM 04/29/16 11:24 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: Weeping intake bolts mean you're building crankcase pressure. agreed, I would check the PCV system and leakdown % live every 24 hour block of time like it's your last day on earth

Re: intake manifold bolts weeping [Re: Hangtowner] #2064414 04/30/16 12:21 AM 04/30/16 12:21 AM
Joined: Mar 2006 Posts: 9,813 MI, usa dvw master
dvw master Joined: Mar 2006 Posts: 9,813 MI, usa	Pipe sealant will take car of it. Doug

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