head torque sequence

[LickskilletM37]

In the past I have always torqued cylinder head in a couple of cycles starting with a lower torque like 45 ft-lbs and then with the final torque. The M37 manual doesn't specify doing this. Do you just do it all at once in the sequence given?

Thanks

Chuck

[LickskilletM37]

It doesn't really matter now.

I just torqued them in the sequence specified in the manual to 67 ft-lb in one pass and then went back over them all again a couple times in the same sequence.

[8543bob]

AT LEAST ONE PROGRESSION IS BEST, 45 THEN FINAL 70

[LickskilletM37]

I've always done multiple progressions on other motors as well.

I went ahead did it in a single progression yesterday because the manual didn't specify anything else.

Hopefully it isn't too critical since the manual didn't specify it. I definately don't want to tear it back down and replace the gasket again.

[Monkey Man]

The method is, from the middle of the head, do the first torque on the middle most bolt, then "spiral" your way out to the end of the head, repeat this for the second and final torques, heat the engine and re-torque and as said before, always re-check after a bit of use. Don't be fooled by "monotorque" gaskets either, treat them the same way and you'll get many years of hassle free motoring as a result

MM