Posted April 7, 200916 yr comment_280086 Where you get them? I'm from the school that everything has a torque spec, but I've found very few in the FSM or Haynes. Just a random momentary rant!!! Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/ Share on other sites More sharing options...
April 8, 200916 yr comment_280106 I've found most of them when I rebuilt my '72 motor. Alot of them I found in the 'how to rebuild your nissan/datsun motor' book, some in the FSM, some in the Haynes...What are you looking for exactly? Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280106 Share on other sites More sharing options...
April 8, 200916 yr comment_280117 There is at least one wrong one in the "How to Rebuild" book..... the 30+fp that is listed for the cam towers is way off. Ask me how I found out..... Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280117 Share on other sites More sharing options...
April 8, 200916 yr comment_280119 John, I'm sure I used that reference for my cam towers... what happened to yours? What torque should I use, and whats the best way to correct what I've done... loosen them a bit then tighten? Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280119 Share on other sites More sharing options...
April 8, 200916 yr Author comment_280156 Well, it's nice to see I'm in good company. I've been trying to find bolt torque specs for the thermostat housing/cap, as well as the rocker cover. However, after my melt down I found AutoZones repair guide. Seems to be fairly accurate from what I was able to cross reference. I going with 100 in/lbs for the thermostat housing/cap and 84 in/lbs for the rocker cover. Hope I'm somewhere in the ball park. Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280156 Share on other sites More sharing options...
April 9, 200915 yr comment_280254 John' date=' I'm sure I used that reference for my cam towers... what happened to yours? What torque should I use, and whats the best way to correct what I've done... loosen them a bit then tighten?[/quote']"How to Rebuild..." listed torque at 33 ft-lb. One of my cam tower bolts snapped off with that, and I guess I am fortunate that it didn't strip the head. A search here in archives (and I think in the FSM) tells me that 15 ft-lbs would have been much more proper. I guess it would be best to back them off a bit, but I am no expert. I hope someone will chime in with some well founded educated suggestions for you. I have gotten suggestions from "simply back them off and re-torque to the proper setting" to "you've stretched the threads and now it needs re-threaded and new bolts". I ended up using another head and the one I messed up has found a spot in a corner. Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280254 Share on other sites More sharing options...
April 9, 200915 yr comment_280256 John, thats an ugly scenario. Well I have both the FSM and the How to..., and Im certain I got most of the specs from the how to book but I guess I'll unwrap the motor, take the valve cover off, use the torque wrench at 15 and see if it doesnt click... Ill go up from there till I find what I actually did it at. Then I'll ease them off a bit and re-torque if needed. If I have stretched out the threads I think (although I'm no expert) that it would be better to torque a bit more than the 15lbs to 'compensate' if theyre stretched, but not go nearly as high as the 33lbs which may snap a bolt off. It might stop snowing this weekend - I'll get on my parka and go in the garage and check! Link to comment https://www.classiczcars.com/forums/topic/31440-bolt-torque-specs/#findComment-280256 Share on other sites More sharing options...
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