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Join Date: Jul 2001
Location: Central Coast NSW
Re: XH motor
Actually, my series 1 XH motor is labeled as an EF engine. In saying that it has an EF 12 couter-weight crank(ED has 8), a block with a knock sensor and an EF/EL timing cover with the serpentine single belt arrangment. It runs EEC-V (most similar to an EL) but with the ED intake manifold, ED rocker cover, and ED air box.
XH XR6's on the other hand, either series 1 or 2 both ran the BBM yet retained the distributor.
So to answer your question, XH engines IMO are best described as an EL motor without the BBM. Everything else is the same.