
08-04-2007, 08:13 AM
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Registered User
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Join Date: Oct 2003
Location: Cape Cod
Posts: 59
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Quote:
Originally Posted by tgingrich
Working on my engine swap project into the SD, I refer to the Haynes manual for engine mount bolt to body torque because it's handy - the FSM cd is in the computer upstairs and I'm covered in grease in the garage.
96ft lbs.
That seems high I thought to myself - the bolts are smaller than wheel studs and look to be "brass," but surely the manual must be right. I mean there it is in black and white - someone took the time to write, edit, and publish these figures, I'm sure they have a proof reader, so I continue on with my trusty clicker torque wrench. Crank, crank, crank, SNAP!
Uh oh.
Jack up the engine, remove the mount, ragged break inside the mount. CRAP!
Hey....What's this bolt for?
Hey look! The hole is threaded all the way through. I pull the other mount bolt, hit the hole with PB Blaster and thread it through the back side. It works - It pushed the broken stud out enough to get the vice grips on it and pull it out.
Now some engineer toiling away in a dank, dark Stuttgart dungeon in the early '80s must have thought to himself - Hey, for 3 pfennig ?sp?, we can make this better, let's do it! And it actually got by the bean counters.
It's a really sad day when a simple thing like this - that made my day - is cut to save a few cents.
The Haynes manual, however will no longer be a reference for anything other than an alternate photo angle.
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The Haynes is a reference book. Rather than blaming the "book" why not accept responsibility. Common sense states that the size of that bolt will never support that amount of torque! None the less, I empathize with your dilemma and hope in the future when you whack your finger with a hammer, you don't blame the hammer.
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DDC/MTU....Setting the pace
1985 300cd
1983 300d...aka "The Yummymummymobile"....Wifes ride
2006 Wesmac 38' Sportfisherman, Single DDC/MTU 12V-2000 1500 hp
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