The Most Comprehensive Free Online Reference for Packard Owners
Become a member of Packard Motor Car Information, right now! (it's free)
Login
Username:

Password:

remember me

Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who's Online
55 user(s) are online (43 user(s) are browsing Packard Forums)

Members: 0
Guests: 55

more...



(1) 2 3 »


Drill out broken exhaust manifold stud- water/antifreeze!
Quite a regular
Joined:
2018/10/20 8:19
From Atlanta, GA, USA
Posts: 27
Per a previous post, I am re-porcelainizing my intake and exhaust manifolds. Unfortunately, one of the exhaust manifold studs was corroded and broke about 1/2 inch above the flush surface. I used lots of penetrating oil and heat but when I tried to remove it, it broke again about 1/4 inch inside the drilled stud hole. Today, I decided I would have to drill it out, so I started with a very narrow 1/16 bit and to my surprise, it drilled very easily and before I know it I was through the stud, but when I pulled the bit out antifreeze came shooting out through the hole I had drilled through the broken stud! I had noticed that the freeze plugs were located on the same horizontal level as the studs, so I guess it makes sense that the water channels communicate completely with the drilled exhaust stud holes. I've drained the water to a level below the holes, and I suppose I will continue to drill out the broken stud or try an easy out. Does anyone have any experience or words of wisdom with this. I don't think I can do any harm continuing to drill out the broken stud, but I'd appreciate any feedback from anyone who has more knowledge.

Attach file:



jpg  IMG_3401.jpg (329.99 KB)
184962_5cb8fc56700bf.jpg 959X1280 px

jpg  IMG_3402.jpg (702.19 KB)
184962_5cb8fc6e00c87.jpg 2016X1512 px

Posted on: 4/18 15:38:55
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Quite a regular
Joined:
2018/10/20 8:19
From Atlanta, GA, USA
Posts: 27
Just realized I forgot to say that this is a 1931 840 engine- thanks!

Posted on: 4/18 15:58:10
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Home away from home
Joined:
2008/9/29 7:39
From Cordova, TN
Posts: 936
Just a couple suggestions, reverse drill bit and grease the bit, to help collect the little bits as your drilling.
Wes

Posted on: 4/18 16:51:16
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Quite a regular
Joined:
2018/10/20 8:19
From Atlanta, GA, USA
Posts: 27
Thanks Wesleyó I guess my main question and concern is: Do the exhaust manifold studs normally communicate with the underlying water jackets? If not, I guess itís possible that someone previously drilled too deep and connected with a water jacket. Crack in the block? Itís hard to imagine that a bad head gasket could cause this given the location of the stud holes.

Any thoughts?

Posted on: 4/18 17:24:08
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Home away from home
Joined:
2008/3/21 18:20
Posts: 2081
Those stud holes are all drilled into the water jacket. Carry on. Put some sealer on the new stud.

Posted on: 4/18 17:42:51
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Quite a regular
Joined:
2018/10/20 8:19
From Atlanta, GA, USA
Posts: 27
Thanks Ross- what sealant would be best- I assume a non-hardening sealant would be indicated.

Thanks

Posted on: 4/18 18:54:21
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Home away from home
Joined:
2016/3/13 15:24
From Coalmont, B.C., Canada
Posts: 503
In my working life, I had a lot to do with a line of products made in the US by a company called Federal Process. They make an excellent thread sealant called 'Gasoila' soft-set. It is gas and oil compatible, does an excellent job of sealing and never hardens. (so disassembling down the road is never a problem. Just as an aside, this company also makes a 'rust buster' product called 'Free-all' and I have never seen anything that holds a candle to it for breaking loose frozen parts. Check out Gasoila - top-drawer product. Chris

Posted on: 4/18 19:19:30
_________________
'If you think you can, or you think you can't, you're right!' Henry Ford

1939 Six, Model 1700

http://packardinfo.com/xoops/html/modules/registry/index.php?Action=view&ID=1823
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Forum Ambassador
Joined:
2007/3/14 16:01
From New Jersey
Posts: 15593
Apologies for jumping in. I've got essentially the same engine and I used Indian Head gasket shellac on my manifold studs, that was nearly 15 years ago and no problems yet.

Posted on: 4/18 19:21:05
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Quite a regular
Joined:
2018/10/20 8:19
From Atlanta, GA, USA
Posts: 27
Many thanks to all who have responded. Iím relieved to hear that these stud holes werenít blind holes but are in contact with the water jacket.

Iíve never heard of Gasoila products. Looking at their website, they seem to have a sealant for just about every application. They make two gasoline/ethanol resistant types: the Soft Set Thread Paste with PTFE and the E-Seal Thread Sealant. Anyone used both of these- preference?

I suppose Permatex Ultra Black would work well too.

Thanks again!

Attach file:



jpeg  F84E6D32-C098-42A8-B918-3CA32967CD43.jpeg (339.76 KB)
184962_5cb9ae61a9c58.jpeg 2048X1535 px

jpeg  162B3264-5DA9-4720-9895-58FC51DD98C1.jpeg (334.89 KB)
184962_5cb9ae7556215.jpeg 2048X1535 px

Posted on: 4/19 4:19:51
Transfer the post to other applications Transfer


Re: Drill out broken exhaust manifold stud- water/antifreeze!
Home away from home
Joined:
2007/10/28 7:49
Posts: 2195
If the manifold is a reproduction I would say go ahead and put new porcelain on it, but I would hesitate to do that to an original because I have seen them warp and crack into pieces. So unless the car is a trailer only case there is a very high risk of complications.

The 833 and 840 exhaust manifold are the most robust of the two piece systems, but nobody is deducting anymore for high temperature powder coat so I would do that rather than the porcelain route.

Posted on: 4/19 4:32:01
Transfer the post to other applications Transfer



(1) 2 3 »




[Advanced Search]


Search
Recent Photos
Random Photo
fropnt and side.JPG
Helping Out
PackardInfo is supported and funded by user donations. If you would to help out by either donating content, or funds to help with the upkeep and hosting of this site please EMAIL ME or click on the donate button.