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Old 31 Aug 2017, 18:39 (Ref:3763251)   #144
Mike Bell
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Originally Posted by morninggents View Post
Yes the Hart 420R engine was longer than a BDA and a completely different engine with no, or little, Ford heritage.
I fear we're going off topic here , but for clarity, Brian Hart was an independent engine builder with premises close to Ford at Boreham. He built competition engines for Ford, but they were badged Ford engines. He (off his own back) had an alloy block made for the BDA that allowed it to be taken to 2 litre capacity. The idea was to use it for F2. Ford saw the block, paid for patterns to be made and put it into production- as 1601cc in the RS1600 road car. That allowed the 2 litre version to be used in rallying and racing. The engine was designated BDG, but still a Ford engine, original design by Mike Duckworth / Cosworth. Brian's part in the engine's success was significant, of course, and many of Ford's rally wins were with engines built by his firm.

Hart then designed and built the 420R engine, which had outward similarities to the BDG, but as Peter says, was a completely different engine. So no Ford involvement, and the first true Hart engine.

Anyway, back to the topic- that fantastic Escort....
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