big end bearing measurements?

Not sure - Paul looked at them, said four were fine and one was showing signs of wear, so we decided to replace the lot.

Big end shells are out - No1 shells were slightly worn, but all the rest were fine - any ideas?

piston and rod weight difference to the rest. they are close matched from the factory but still will be out alittle bit

All the pistons and rod assemblies are balanced to within half a gram of each other - Paul got really serious about it when he built the engine (stock tolerance is something like 20 grams)

Is that a standard head cast wise ?
I ask as mine doesn't have the extra casting to the left round the spark plug recess :|

sorry meant journals, not shells

as now would be the time to source a good one if this one is worn....

Looks like Paul will be working a few late nights then from the look of the work he had on today

I have asked Barbz the same thing - don't remember seeing it on my original head

looks like that engine could do with some paraflu!