Just replaced (preventive maintenance) my ACL rod bearings in a turbo D16y8 with about 10k miles. Well, there were not destroyed but not brand new so I decided to replaced them. I've seen that in contrast to D16z6 crank, the D16y8 has only one hole for rod bearing oiling and this might be a good reason for rod bearing failure (my oil pump is ported and oil pressure was well above standard under all conditions). My question is does the same apply for D17a2 cranks? (do they also have one hole?). I am planning to build a new motor and keep my d16y8 as spare and not sure whether to start with a D17a2 or a D16z6 (the former has the benefit of more displacement, the latter is more proven). I run daily about 16psi.