Cam cap bolt torque?

650ed wrote: I'm glad to see you now have access to an inch pounds torque wrench. That should prove to be far more accurate than the other wrench at the specified torque.

650ed wrote: I'm glad to see you now have access to an inch pounds torque wrench. That should prove to be far more accurate than the other wrench at the specified torque.

Regarding stuck bolts, I have had outstanding success using Kroil to break the bond between the bolts whatever they are threaded into. When I find one that is stubborn I soak it for 2 or 3days with Kroil, re-applying once or twice a day, and then they unscrew with no difficulty. It has saved my butt at least 5 times so far. Here's the stuff I use. Let me know if you need help finding it. Ed

Attachment Kroil_2014-08-25.jpg not found

daveo wrote: I won't use the 6mm bolts to pull the cams and caps down...never, ever again. Using short Bessey Tradesman clamps on all four cam-caps to seat them before putting any bolts in, I will not remove them until each bolt has been very-gently torqued to spec. There is a nice opening in the J-engine head casting (directly below each cap location) to slip the fixed end of a clamp into, like it was designed for this purpose.
In my opinion, once the fine aluminum threads have been stressed, they're done.:pinch:

daveo wrote: I won't use the 6mm bolts to pull the cams and caps down...never, ever again. Using short Bessey Tradesman clamps on all four cam-caps to seat them before putting any bolts in, I will not remove them until each bolt has been very-gently torqued to spec. There is a nice opening in the J-engine head casting (directly below each cap location) to slip the fixed end of a clamp into, like it was designed for this purpose.
In my opinion, once the fine aluminum threads have been stressed, they're done.:pinch:

650ed wrote:
That makes great sense! Especially when you think about how much thread is engaged when you first start pulling down the cams - not much on the caps that must push the valves open. By using a clamp to first pull down the cams the whole length of each cap bolt's threads is engaged in the head before any stress at all is applied. I like it! Ed

bountyhunter wrote: But as Ed pointed out... what's the range max? I have an inch-pound wrench that is full scale 600 I-P which would be a terrible choice for a bolt that needed to be torqued to 100 IP. I also have a 200 I-P max torque wrench that I use for such jobs.

As somebody already said: below maybe 25% of full scale? You are really taking your chances.

murquiza wrote:

bountyhunter wrote: But as Ed pointed out... what's the range max? I have an inch-pound wrench that is full scale 600 I-P which would be a terrible choice for a bolt that needed to be torqued to 100 IP. I also have a 200 I-P max torque wrench that I use for such jobs.

As somebody already said: below maybe 25% of full scale? You are really taking your chances.

Torque range: 20-200 in. lbs. +/- 4%, doing the cam caps tomorrow. :dry: