whats the proper torque for flex plate to crank

 

55 Lb/Ft.

 

A quick Internet search brought up 101ftlbs.

 

Tighten the bolts in a criss-cross pattern to 137 N·m (101 ft. lbs.) torque.

 

55 or 101 flywheel says 101 is flex the same

 

FP to TQ 55
FP to crank 101

 

Um, is the FSM wrong, or does the first gen use different values?





On edit, my 91 FSM says the same thing.



I did catch the 101 Lb/Ft. but was mentioned as a flywheel, so I surmise that is for manual equipped trucks.

 

Well, when I assume common sense things, I get my foot stuck in my mouth.

It seems that though the bolts go into the same holes in the crank as flywheel bolts, they are to be torqued to 55 ft lbs.

Plate to TQ seems to vary from twenty some to 55, with the diesel being on the low end of the list.

This is from the 93 fsm, as opposed to a second gen book. Tranny would be a 46RH

 

thanks guys

 

JMartin, I am also slightly confused as to why you would torque the flywheel bolts differently than the flex plate, the only thing I could think of is perhaps the flexplate to crank bolts have a thinner head? Traditionally your torque values are determined by the size of thread and grade of bolt, which would be the same for both conditions.

 

If they do, that would be the difference.

I was raised with "The correct torque is just before it twists off."