I have a J2RTVSIA (hong kong OMC 2hp "commercial"). I had to remove head to clean out water passages which were blocking the telltale. I got a new head gasket but the head bolts are NLA. I tried to reuse the original but I sheared 2 of them just trying to torque to 10ft lbs. They seem to be made of some weird alloy and sheared half way along. I was going to attempt a second cycle of getting them to 20ft lbs having read that this is a common torque setting for outboard head bolts but that is obviously not an option.
Can anyone tell me what the recommended head torque value actually is for this motor? It's a very simple motor and would prefer not to have to buy a manual just to find this out.
Also should i just replace with high tensile bolts? I have read that some head bolts are manufactured to stretch a certain amount and shouldn't be reused. I feel that this is less likely for this little Chinese made outboard than the materials just being poor quality.
Can anyone tell me what the recommended head torque value actually is for this motor? It's a very simple motor and would prefer not to have to buy a manual just to find this out.
Also should i just replace with high tensile bolts? I have read that some head bolts are manufactured to stretch a certain amount and shouldn't be reused. I feel that this is less likely for this little Chinese made outboard than the materials just being poor quality.