so your agreeing that a Bseries is more likely to have problems?
i've not owned a B series so i can't comment but i've owned a few twin cam engines (nissans and toyotas) and i can say from my experance its all about how the engine is used and looked after. i mean i had my car a full 3 days before the radiator top tank split but thats because the car was driven once a week by someone who didn't do the usual checks (oil water etc..) but since i've had it it runs so much better than the first week i had it.