Offenhouser torque specs

[Theholygrehl]

Looked on here to see if anyone has posted on the torque specs and came up with nothing.
I bought the offenhouser 1090 and I'm going to use bolts with harden washers, what it the torque specs for that?
Thanks,
Eric

 

[adileo]

My notes say 50-55 lbs three heat cycles

 

[uncle max]

He's talking about intake manifold, not heads!

My notes say 50-55 lbs three heat cycles

 

[adileo]

A thousand pardons....my miss

 

[Theholygrehl]

That's ok. Actually I needed the head torque specs also. But didn't know what the intake specs were. Thanks for the heads torques

 

[Theholygrehl]

How long is each heat cycle?

 

[51 MERC-CT]

Have never torqued my Offy manifold but I'll guess 18-22 ft.lb.
Someone can correct me, and I'll learn something.

 

[Theholygrehl]

I figured just tight not lose but didn't know if someone had some torques that work

 

[JSeery]

Shouldn't be manifold specific, but be established by the clamping force required to seal it. So, should be the same as stock.

 

[34PKUP]

How long is each heat cycle?

The end of a heat cycle is when the engine has reached operating temp and has cooled off from being used/run. Starting from cold is the beginning of a cycle.