Classics Monthly - - Rover Ohc Engine -

Q: Is it true that the six-cylin­der Rover SD1 en­gines were re­ally a Tri­umph de­sign? I’ve just ac­quired a 2300 project and I’m in­trigued by the odd-look­ing en­gine.

A: Not as such. It’s said that the Tri­umph straight-six unit was used as a start­ing point for the de­vel­op­ment of an OHC six-cylin­der en­gine for the SD1 but in re­al­ity was used only as in­spi­ra­tion. The so-called ‘PE166’ en­gine as it en­tered pro­duc­tion ended up be­ing very dif­fer­ent. The plain black flat-top style of the en­gine is stan­dard but the en­gine was a clever de­sign de­spite prob­lems with the oil re­stric­tor to the top end. In fact it’s reck­oned that the 2600 was de­tuned to avoid com­pet­ing with the less ad­vanced ex-Buick pushrod V8 en­gine.

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