Ford Cosworth 1700 cc . 160 BHP BDR engine . ( same as BDA engine but only supplied to Caterham with the BDR suffix)
4-boult head
2 x Weber 45
lighted flywheel
AP clutch and pressure plate
83.5 mm pistons
AX engine from Caterham BDR
Ashley Extractor Tube
https://en.wikipedia.org/wiki/Cosworth