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Torque specs

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Member
Jolly Green's picture
Portage, MI
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Joined: October 6th, 2006

Posts:
13

Vehicles
1982 300DT
1967 250S

I am looking for the torque specs for the intake/ exhaust manifolds on my 1967 250s. The car is equipped with an inline 6 and dual inat. Zeniths. I have currently taken them to 25 foot pounds and can not find the info in my old service manual. Thanks, for you time

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bwostosh's picture
Spring Valley, CA
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Joined: August 18th, 1998

Posts:
126

Vehicles
1971 280SE
Re: Torque specs

tighten and re-tighten and re-re-tighten and re-re-re-tighten. That gasket keeps crushing until really compressed.

25 ft lbs is a reference point, Do to that, then re-do 2-3 times after until they all stop rotating at all. then start motor and do another 2-3 times while hot, Do the same with the 6 bolts holding the exhaust head pipes to manifold.
I re-use the exhaust bolts after smashing (lightly) the old nuts. Be sure to use the wavy washers at the manifold to head studs, and use three on the stud which bridges the tensioner and the manifold.
After developing the correct feel, you will not need the torque wrench for these studs, I have never broken one of these,

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pch2021's picture
Rockledge, FL
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Joined: September 15th, 2005

Posts:
2780

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None
Re: Torque specs

I'm printing this for ym records.

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Pierre Hedary
...happily servicing vintage Mercedes-Benz in sunny Florida...
1972 280SE 4.5 252K
1970 280se 3.5 coupe 108K
1971 300sel 4.5 121K
1991 420SEL TMU, but looks brand new!
Mercedes technical advice: 407 765 2867

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