Paul Falabella Posted May 22, 2014 Share Posted May 22, 2014 Got a small coolant leak. Appears to be coming from the bottom of the thermostat housing/manifold. Figure it is a bad O-ring. Correct in assuming it comes off with four bolts, two through lower A/C compressor mount and two through the P/S pump bracket? Or are there more? Link to comment Share on other sites More sharing options...
Fr. Buick Posted May 22, 2014 Share Posted May 22, 2014 Correct! If I recall accurately, it is best to set the O ring into the engine, then place the water manifold into place, then slide the two gaskets in last... It is a very tight fit. Link to comment Share on other sites More sharing options...
bhambulldog Posted May 22, 2014 Share Posted May 22, 2014 I would use two "O" rings and some petroleum jelly. Link to comment Share on other sites More sharing options...
old-tank Posted May 22, 2014 Share Posted May 22, 2014 Pull the cross over manifold straight up, otherwise you can easily break off the nipple that goes into the timing cover. Clean well! Some deeper pits can be filled with JBWeld. Coat the new O-ring with RTV and put it into the pocket in the timing cover. I never used 2 O-rings, but it sounds like a good idea. Support the a/c compressor with an engine hoist so you can get the bracket off.Willie Link to comment Share on other sites More sharing options...
Paul Falabella Posted May 23, 2014 Author Share Posted May 23, 2014 Noticed there is no gasket at inlet with O-ring. A little Permatex? Or leave it dry? Link to comment Share on other sites More sharing options...
old-tank Posted May 23, 2014 Share Posted May 23, 2014 Noticed there is no gasket at inlet with O-ring. A little Permatex? Or leave it dry?Without a picture I am going to say that the O-ring is the gasket. Link to comment Share on other sites More sharing options...
TexasJohn55 Posted May 23, 2014 Share Posted May 23, 2014 Paul, some of those bracketry bolts go into water jacket. Check to see if they have bottoms or blow some air into hole to check them. Any bolt holes into head or water jacket may need some dope on the threads to seal them or they will leak out from under bolt heads also. Link to comment Share on other sites More sharing options...
bhambulldog Posted May 23, 2014 Share Posted May 23, 2014 Noticed there is no gasket at inlet with O-ring. A little Permatex? Or leave it dry?Without a picture I am going to say that the O-ring is the gasket.That's right. That's why I suggest using two "O" rings. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now