There are basically two configurations around the 4A-G cylinder block with some minor variations Using the five vale versions. In all instances they have these attributes in popular. The cylinder block over the 4A-G is product of Forged iron alloy. There are actually five key bearings held with two bolts https://4age-20v15787.wssblogs.com/26783469/new-step-by-step-map-for-jdm-toyota-4a-ge