Quote:
Originally posted by mavisky
if you're talking about just the block itself there are some changes.
1. the knock sensor hole on the nt is behind a different cylinder i believe its 2 instead of 3.
2. no oil squirters.
3. different pistons obviously.
4. different oil filter assembly, either air cooled for the 1990 blocks or watercooled for the 91-on turbo blocks.
of course there are lots of other little differences such as the water pipe from the water pump and stuff.
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Well if they are both 4G63 engines on 2G cars why would the block be different? ... I cant find any differnences besides the pistons that would change the compression ratio. Are these blocks interchangeable with new crank, rods, and pistons?
Matt