Hi guys, I'm new to the Britbike forum but have been lurking for a while.
I have a friend's T160 with the head off to replace a blown composite head gasket. I am aware that the pillar bolts can sometimes strip the threads in the rather soft alloy factory cylinder, thus allowing the head to lift and causing head gasket failure, but it appears that the pillar bolts are all tight in their threads. I know this engine was built very well and has survived 11 years until this gasket failure happened. However, I want to make sure that the pillar bolts are tightened to the correct torque so they don't undo when the head bolts come off at some stage in the future. I also don't want to over-tighten them.
I don't yet have a 7/16" socket bolt extractor to check the torque of the pillar bolts, but looking at the factory manual
, I can't see any reference to torque settings for these pillar bolts. I see the figure of 18 lb/ft for the cylinder head bolts, but not the pillar bolts. Am I missing something? Can someone suggest a practical torque setting that works from their own engine-building experience with triples?
By the way, I have checked the cylinder head face and it is absolutely flat. And I will be using a copper head gasket.