Cam Cover Bolts Torque

[Dool]

From memory the Torque setting for the Himalayan Cam cover bolts is 10 12 and 14 nm depending on which bolts with the 6 over the Cam being 14nm.

I have stripped a few to say the least and it is challenge repairing the threads whether in the frame or out.

Watching a Video on the J series today I saw the torque setting for the Cam bolts being stated at 10nm, they are 6mm bolts just as the Himalayan!

I wonder why there is such a discrepancy.

Any thoughts?

 

[barima]

I am not familiar with the J series but if it has the same setup as the himlayan (rocker arms in cam cover and encompassing the cam), i think of 2 things:
1. increased pressure on the cam cover due to stiffer valve springs or different rocker arm ratio.
and/ or
2. higher torque for the 6 cam bolts to adjust cam tolerance / lobe roundness.

Placing of bolts and load distribution accross the cam cover due to a different design is also possible.

I have never stripped a thread of the head and never use a torque wrench. Just a 1/4 ratchet and "hand tight".

With the silicone i am using i even have trouble getting the cam cover off without bolts. Sometimes even increasing the valve spring pressure other wise it wont come off!