Gerry,
Yes, there was a Mk I Twin Cam Escort, but it wasn't the RS2000.
The Twin Cam used the usual 1558 as seen in the MkI and MkII
Lotus Cortina and Cortina Lotus and other cars. Two valves and
chain-driven cams, and rallied, as you note.
The next Aveley Escorts were the RS1600 and the Mexico (1600 Kent).
The RS1600 had the 4-valve 1600 BDA of course, originally in
iron and later with an alloy block (I had one of the very first
alloy block engines). These all used the Mk1 shell, along with the RS2000,
which came later.
The Mk II shell continued the RS2000 name, but with a 4-headlight
droop-snoot front, and still with the SOHC Pinto engine. The
multi-cam version of the Mk II was the RS1800, which had an
1800cc alloy version of the BDA, but with a couple of down-draft
carbs (for some reason). The Mexico was dropped, replaced by the
production, tame, 1600 Sport.
Now, there was another Mk II RS2000, known as the flat-front (Uruguay)
RS2000. This was homologated by Ford Uruguay quite properly,
for use in their own rally programme. It was also taken advantage
of by European competitors.
This is all about _production_ Fords from Britain. The rally programme
was different. The Boreham RS1600 rally cars were bored out to
2000cc. This might explain your confusion with the RS2000. As far
as I know, in the Escort this always the BDA, and never the BDG or
FVA or any of the other Cosworthish Fords.
Paul.
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