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Old 09-11-2002, 02:43 PM
steven c. immel
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190e 2.6: retorquing heads, benefits?

Is there any benefit to retorquing the head on a 190e (1991, 71K miles) which has only minor oil seepage but more important the beginnings of a coolant leak, both in the frontal area. I have not seen any discussion of this--do the MB "stretch" bolts always maintain their torque? The exact point of the coolant leak is very difficult to pinpoint but I don't think it is the water pump or a hose. The leak (at worst, a pint a week) seems to go away after the engine reaches operating temp and having the cap on the expansion tank loose helps a bit too (otherwise car runs fine and within acceptable temp range). Thank you.
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Old 09-11-2002, 08:30 PM
Registered User
Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
They use stretch bolts that hold constant tention. If you apply any more turn to the bolt, it could easily break.
Donnie Drummonds
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