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98 2.0 replacing 2.0 single vanos engine - track
Ive just got hold of a nice tidy 520 with a single vanos 2.0 engine. The engine has ring failure on 2 pots after the previous ran it dry of oil. I have access to a few different engines, none of which are a direct replacement. Just wondering what units will drop straight in place?

There are options of 2.5 single vanos engines from e36 cars or a 2.0 single vanos engine from an e34. The 2.0 would be preferable as I think the fueling would be better suited to my ecu etc. Just not sure if it fits in directly with exhaust manifolds etc? The engine codes are very similar suggesting they are the same engine with minor modifications for the later car.