cylinder head help
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Senior User
Joined: Jun 2005
Posts: 321
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From: Atlanta
cylinder head help
Guys, I'm a longtime member with a 77 F100. I have been rebuilding a 1974 Mercedes Benz 450SL (R107). I have posted this question in the MB forums, but frankly, 99% of those guys don't do their own work so they aren't much help.
I'm begging the Ford brotherhood to help me out.
Corrosion/calcification in cylinder head water passages is BAD. As I'm cleaning I notice something loose. There are some type of water restrictor plugs pressed into the head. Pics show one completely gone, one partially gone, and one "ok". They are easy enough to remove, but what are they called and WHERE CAN I BUY REPLACEMENTS? I've been searching with no luck at all.
Removed
Mostly corroded out
"good" so to speak
I'm begging the Ford brotherhood to help me out.
Corrosion/calcification in cylinder head water passages is BAD. As I'm cleaning I notice something loose. There are some type of water restrictor plugs pressed into the head. Pics show one completely gone, one partially gone, and one "ok". They are easy enough to remove, but what are they called and WHERE CAN I BUY REPLACEMENTS? I've been searching with no luck at all.
Removed
Mostly corroded out
"good" so to speak
Elder User
Joined: Nov 2009
Posts: 666
Likes: 0
From: Chicago area
I don't see what you're talking about?
What I do see is some of the water passages blocked off by "crud" that built up in the cooling system over time.
Some engines do not use all the passages that are cast/machined into the head surface. They usually get blocked off by the head gasket. Some gaskets have holes that don't match up with any holes in the head as well.
This happens most often when the head gaskets are the same for both right and left bank.
If you have the old and new gaskets compare them and see if any of the passages are covered.
What I do see is some of the water passages blocked off by "crud" that built up in the cooling system over time.
Some engines do not use all the passages that are cast/machined into the head surface. They usually get blocked off by the head gasket. Some gaskets have holes that don't match up with any holes in the head as well.
This happens most often when the head gaskets are the same for both right and left bank.
If you have the old and new gaskets compare them and see if any of the passages are covered.
Super Moderator
Joined: Apr 2004
Posts: 34,521
Likes: 2,827
I didn't see your issue addressed here, but this guy is into the motor up to his neck so if the forum is still active, your answer may be in there:
My 450SL (350) Top end rebuild - Mercedes-Benz Forum
I would think those would be part of a gasket set, or sold as part of a set by your friendly MB dealer.
They should show in the parts catalogue also.
In that link I posted if you go page by page you will find a cam follower shim made from a Stanley razor blade. Perhaps you will have to resort to the same sort of field engineering.....
My 450SL (350) Top end rebuild - Mercedes-Benz Forum
I would think those would be part of a gasket set, or sold as part of a set by your friendly MB dealer.
They should show in the parts catalogue also.
In that link I posted if you go page by page you will find a cam follower shim made from a Stanley razor blade. Perhaps you will have to resort to the same sort of field engineering.....
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