MoparFins

Techical Discussions => Tech- - Engine => Topic started by: Shoots on September 05, 2010, 08:35:35 AM

Title: 440 valve cover gaskets.
Post by: Shoots on September 05, 2010, 08:35:35 AM
I'm going to change the valve cover gaskets in my 68 chrysler 300. It has a 440. My ? is if the studs at each end of the valve covers turn out will I get coolant all over?  I got one off without the stud coming out. I dont want coolant everywhere. I would think the studs would bottom out.
Title: 440 valve cover gaskets.
Post by: Stan Paralikis on September 05, 2010, 08:38:28 AM
Coolant?
Title: 440 valve cover gaskets.
Post by: Shoots on September 05, 2010, 09:01:53 AM
Yes I was told that if the studs come out with the nut it will spit coolant unless he was giving me a line.
Title: 440 valve cover gaskets.
Post by: Leaburn Patey on September 05, 2010, 10:57:23 AM
Quote from: Shoots
Yes I was told that if the studs come out with the nut it will spit coolant unless he was giving me a line.
Not a line--just a misunderstanding.
No coolant will come out from the valve cover bolt holes/studs.
Some Exhaust manifold studs DO go into the water jackets of the heads and when the stud comes out coolant comes out.
Simple.
 
Title: 440 valve cover gaskets.
Post by: Shoots on September 05, 2010, 12:58:10 PM
Do the studs bottom out?
Title: 440 valve cover gaskets.
Post by: Leaburn Patey on September 05, 2010, 01:09:47 PM
Quote from: Shoots
Do the studs bottom out?
OK,which ones are you talking about? valve cover?? or exhaust studs??

Title: 440 valve cover gaskets.
Post by: Steve on September 05, 2010, 01:11:37 PM
In simple terms, there is no coolant behind the valve cover studs.
 
The place to worry is in the front of the engine.  Accessories like Power steering and some alternators have water behind the mounting bolts.  But even then, most of the wet bolts will be through the timing chain cover.
 
POLARACO2010-09-05 18:14:16
Title: 440 valve cover gaskets.
Post by: Shoots on September 05, 2010, 02:45:44 PM
the studs at each end of the valve covers that have a nut on them.
Title: 440 valve cover gaskets.
Post by: Snotty on September 05, 2010, 02:53:58 PM
Yes, and some times they will turn the stud out on older motors.  This is not a problem, just tighten them back down when you put the covers back on.


 
All of them will turn out; you've just has a few do it.
 
As someone said, if this were to happen on the exhaust manifold you would get coolant from the outer stud holes.
 
Be sure to clean off all of the old material form the head and the covers before you put the new ones back on.  A small amount of black silicone helps to seal them.  Don't over-tighten the bolts.
 
Good luck!
Title: 440 valve cover gaskets.
Post by: Guests on September 05, 2010, 07:09:21 PM
Valve cover bolt holes do NOT go into the water jacket. The front and rear exhaust manifold bolts/studs do go into the water jackets, no accessory attachments on the front of the engine  enters the water jacket, and the water pump bolts go into the water jacket on the front of the engine, no timing cover bolts do.  If the valve covers are stamped steel, to prevent/stop leaks from overtightening over time, if you run a straight edge over the bolt holes, chances are good you will find they are not the same height as the rest of the rails, so take a hammer to them, that way when the bolts/nuts are tightened, it will clamp a larger flat area.dana442010-09-06 00:12:18
Title: 440 valve cover gaskets.
Post by: Shoots on September 05, 2010, 07:21:31 PM
Thanks for the info fellas. I'll change them tomorrow.
Title: 440 valve cover gaskets.
Post by: Steve on September 05, 2010, 08:20:17 PM
Quote from: dana44
Valve cover bolt holes do NOT go into the water jacket. The front and rear exhaust manifold bolts/studs do go into the water jackets, no accessory attachments on the front of the engine  enters the water jacket, and the water pump bolts go into the water jacket on the front of the engine, no timing cover bolts do.  If the valve covers are stamped steel, to prevent/stop leaks from overtightening over time, if you run a straight edge over the bolt holes, chances are good you will find they are not the same height as the rest of the rails, so take a hammer to them, that way when the bolts/nuts are tightened, it will clamp a larger flat area.


 
 
(http://www.moparfins.com/forum/smileys/smiley36.gif)(http://www.moparfins.com/forum/smileys/smiley36.gif)  I'm thinking small block.  I meant to say the water pump housing.
 
And I hate to tell you, if the car has A/C, there are bolts on the front which go into the water jacket.
Title: 440 valve cover gaskets.
Post by: Guests on September 06, 2010, 08:05:01 AM
Those bolts going into the water jacket are attached to the outside of the water pump which attach the water pump to the block which have bolts that go into the water jacket, so technically you are correct, and if the AC wasn't on the engine, those bolts would still run into the water jacket because they hold the water pump itself.
 
Talk about double-talk double-talk.(http://www.moparfins.com/forum/smileys/smiley2.gif)