Manifold torque

[Mike B]

What is the proper torque setting for stock intake and exhaust manifold nuts on a 240Z? I searched and one person said 8-11.6 ft lbs in one thread. Another said 10-13 ft lbs for "small size" nuts and 25-36 lbs for "larger" nuts. All of the nuts are 12mm, except one that holds the fuel rail on is 13mm. The Haynes manual says 8 ft lbs. I can't find anything listed in the FSM.

-Mike

[Mike B]

Following Geezer's recent advise, I looked at the "similar threads" shown at the bottom of this one and found one that I hadn't seen searching http://www.classiczcars.com/forums/showthread.php?t=13330. It says 5.8 to 8.7 ft lbs, so I guess I will go with the 8 ft lbs that the Hayes manual says. As was mentioned in the other thread, that doesn't really seem very tight, but apparently that is all it needs.

-Mike

[70 Cam Guy]

5.8 - 8.7 is what I found in the 1973 fsm. It is in section EM - Engine Mechanical, page 33 (EM-33)

[Mike B]

5.8 - 8.7 is what I found in the 1973 fsm. It is in section EM - Engine Mechanical, page 33 (EM-33)

Thanks for the confirmation and the reference page. The FSM's I have for 1970 and 1972 just say "install the engine slingers, exhaust manifold" and "install the intake manifold with carburetor and heat shield plate" on that page, but don't provide any torque specs.

-Mike

[70 Cam Guy]

Thanks for the confirmation and the reference page. The FSM's I have for 1970 and 1972 just say "install the engine slingers, exhaust manifold" and "install the intake manifold with carburetor and heat shield plate" on that page, but don't provide any torque specs.

-Mike

Happy to help! I had to do some digging too. I love factory manuals but it always seems like the simplest things are the most difficult to find. I'll be doing my gasket as well in the next month and I was also happy to 're-find' the page