Quote:
Originally Posted by rbtoj
So I very likely have loose valve guides and will need to take the head of my 280slc to a machine shop. Before I do so, I just want to make sure I understood a few things that are not very clear on the service manual:
-The timing chain does not need to be opened to remove the head, right?;
the chain does not have to be opened, but do put a retrieval wire around it
-The head does not use stretch bolts (so they can be reused?);
the head bolts are to be reused; no stretch
-The manual mentions a special tool (116589010100) to hold the camshafts. Are there any alternatives to this tool?
vise-grips
By the way: are there any While I'm In There™ type jobs that could be done since I'll be taking the head off?
Thanks.
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Should the chosen shop advise you of a "warping" condition,
stop.
Any surface machining with the objective of restoring "flatness" must be thought through very carefully. If the bottom surface (the head gasket side) is "warped", so too is the top side (the cam box side). If the bottom were to be machined flat, and the top left "warped", when the cam box is subsequently bolted to the "warped" top surface, the cam box will be itself "warped", and the cams will not turn in their bearing bores!
If there is no corrosion on the head gasket surface that would warrant machining, leave it alone. When re-bolted to the block, the head will become flat again.