7AGZE in AE86

[the boffin]

Yes, I used a 4AGZE block to take measurements off each bore. Late 16v or 20v block also have oil feed jets. The guy that built my engine did the machining work, he used it as jig, replaced it with 7A block and slot cut a flat face before drilling into the oil feed in the block. Be very careful as he destroyed first block as 3 of the oil jets are the same offset but 1 is opposite hand or completely different. He actually bored out though the block a few mm, had to scrap it! We also cut down the lenght of the banjo a couple of threads as block is not as thick in 7A compared to 4A at oil line. Then the skirts of the pistons were notched for clearance!