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RalfMurphy

RB25DET Help to identify NEO vs non-NEO

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I picked up an old RB25 from a scrap dealer who sold it as a NEO. It didn't come with an engine cover (the obvious indicator) but I figured I'd be able to identify it once I started stripping it. The first thing I checked was the crankshaft oil pump collar. To my disappointment, this was the standard, short collar which made me think that I was sold a non-NEO. But as I stripped the head, I see it had solid lifters, indicating a NEO. I read that early NEO's hadn't addressed the oil pump collar issue but have the improved cylinder head. It's also meant to have GTR conrods but I'm not sure how to identify those. Anyone else know how I could identify the motor that I have? At this stage, it would be important for me to know how much the stock internals can handle 

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