Torque Specs

[Dennyhydrostream]

What's the torque spec for cylinder heads on a 1993 2.5 260 stock heads.

[rev.ronnie]

From what I've seen, guys are torquing them to 38-42#. the stock angle torque method is generally not accepted because of thread pulling. Jay Smith would be the guy to ask too. I think he'll tell you the same.

Use the correct thread lube and oil on the underside of the bolt head.

[Dennyhydrostream]

ok, thanks

[kingsbiship]

Once a new 'stretch bolt' is torqued... as in ** ft. lbs. plus 90 degrees, it can no longer stretch, so most refer to the old torque specs.

[Jay Smith]

I torque 260's at 36-38 ft lbs ........

Works for me..

Jay

[rev.ronnie]

Jay, refresh me on what you lube threads with, is it moly or anti seeze on the threads and oil on the bolt underside?

[Jay Smith]

Any heavier grease on the male thread ( Pro Marine needle bearing grease ) and a lighter oil on the bolt head flange to achieve accurate torque value ( old blue Mercury 2 cycle oil , I also use that to lube piston, skirts, rings and bores at assembly time)

BTW: ( lighter oil on the outside of the engine is easier to clean )



Jay

[rev.ronnie]

Thanks Jay!