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All B230 engines got larger mains (63MM vs 55mm) in mid 1988. The connecting rods also grew because of breakage with turbo. The non-turbo engine you pulled is similar design but for numerous reasons, not a good choice for your turbo car - and that would be if you picked a beefier 1989 or later engine. You got the weakest version there.
If you cannot find a good 1988 or later turbo motor, rebuild your original. If you want to have a motor ready for quick transplant, email me directly as I have a '91 engine that is apart and prepped for rebuild (all cleaned and checked).
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