[kinsja]

I've pulled down a 1974 2.7s engine that has Mahle Nickasil cylinders marked - 90ZN2 W5. One is damaged, so i'm looking for a replacement. I've seen many versions which appear the same except for the W number. These include W5, W6, W7 and W8.

Does anyone know what the W refers to? These cylinders don't have height group triangle marked anywhere.

Thanks, Jason