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Quick background, I've got an 84 4Runner with a blown up 22R. I just bought an 85 4Runner for cheap ($375 ) with a 250K 22RE that needs a rebuild. The guy said the head might be ruined on it. Are the heads swapable from the 84 22R to the 85 22RE. I want to say no but I needed the expert opinions here first
NO! they are not swappable! the early engines have a short head and the late engines have a taller head, which leads to your timing chain either being too tight or too loose depending on how you mix and match them together.also, early('81-84) engines had domed pistons that'll most definitely smash into a late style head which is meant for flat-top pistons.
...why buy when you can build?
well.....ok then.....ive swaped a carb head onto an efi block but not the other way, guess i was wrong
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