StealthGXL

iTrader: (1)

Is there a specific torque rating for the bolts connecting the engine to the transmission? Can't find anything on it in my Haynes

Rx-7Doctor

iTrader: (13)

I have not seen anything on this either but given it is a 14MM I'd say 65FT lbs.

StealthGXL

iTrader: (1)

Hmmm, on my way from 30 to 55 the bolt under the starter snapped. I will be using 30 ft/lbs from now on after I pull the engine out again and try to remove the broken blolt from the engine....

Just a heads up for everyone..

trochoid

iTrader: (6)

Lo and Behold, Section 30 of the FSM is devoted to specs, imagine that. It lists all of the individual and specific torque specs. If one can't find the specific torque spec they are looking for, the very last sub-section lists torque specs based on bolt size and tensile strength of that particular bolt in both N-m and ft-lb. Unfortunately this last section is limited to 6T and 8T bolts. There are 10T and 12T bolts, but they are for the pressure plate and rear drive shaft flange, which are listed separately in their appropriate sections.

Not only are torque specs listed but so are a number of wear and limit specs listed. This is a good section for one to familiarize themselves with.

And members wonder why I push the link to the FSM in my sig line. Fwiw, it's the Technical section in the 85 FSM, and Section T in the earlier editions.
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StealthGXL

iTrader: (1)

Quite the mean "let's make an example out of this guy" post, Trochoid.

I've been here long enough, I've read the FSM, it doesn't have anything specific listed there about these bolts. The closest is the torque spec for automatic transmissions, the bolts that connect the converter to the engine.

As you said it also lists recommended torques for bolts unspecified in the section. It lists 56~76 ft-lbs torque for 14mm 6T bolts.

The 65 ft-lbs that Doc recommended and the 60 ft-lbs which I was going to tighten to falls well within the 56~76 ft-lbs range...

Hades12

I just pull them tight with a 3/8's and dont worry about them again. Never had a problem.

trochoid

iTrader: (6)

Not trying to pic on you. The Haynes manual doesn't have a Section T/30 and I'm sure many members are not aware of this particular section of the FSM as often as this question tends to come up. If you feel slighted, then you don't understand my odd sense of humor. I pic on myself even worse most of the time.

Jeff20B

iTrader: (13)

I just pull them till they're tight. 65 pounds sounds awefully high. No wonder the starter bolt snapped. Ouch! I don't know how tight it's supposed to be, but it has a lock washer and all you want to do is crush(flatten) it and feel for the bolt to stop turning. It's just going into aluminum! lol

I never had a problem using an educated arm. I only use a torque wrench on things like tension bolts and stuff where it's a good idea if they're all the same tightness.

Rx-7Doctor

iTrader: (13)

I misinterpeted the bolt size reference. Thought of the 14mm head instead of the actual 10mm bolt and the torque value associated with the bolt size not head size.

I am so sorry about that. If I was near by I would help you pull the trans to fix the problem. :-(

84stock

iTrader: (5)

Trochoid sounded supportive to me, perhaps you misinterpretted.

trochoid

iTrader: (6)

Doc's correct and I should have pointed that out. In the last section of torque specs, it refers to bolt diameter, not the size of socket used. Fwiw, the torque specs for the automatic tranny bolts should be the same as the manual since all of the bolts are going into the same holes in the rear iron.