Exactor unit, Stirling , Whitley or Whirlwind?

basicly the same unit but with the inlets and outlets arranged to allow it to fit in the tight area I reckon, great work , here is another pic , Kev

This is the AP Illustration for the WW unit, and a photo (marked ‘C’):
[ATTACH=CONFIG]236759[/ATTACH][ATTACH=CONFIG]236760[/ATTACH]

Cheers Beermat , kind of you , its looking like Stirling although not typical Stirling numbers , I find it hard to imagine this lump fitting into the streemlined cowl on a Whirlwind
but possibly a Whitley. Kev

Cannot match those numbers to anything Whirlwind. The spares list gives 27K/51 as the ref for the pitch control receivers, that is all I have, though am looking for photos.

Here it is on a Hecules II III or XI engine I think varialble pitch control
So question is what did the pitch control unit look like on the Tiger engine (Whitley) or the peregrine engine (Whirlwind)

few more numbers Large VY then P0125B

numbers on body below adjustor All as far as can see DTD255 then an inspection stamp JSC over 53 in a tiny circle then A2K38
on larger part of body CA16708 K2366
Also found a reference to Stirling BK610 MK1 abandoned 1.5 miles East Dungeness , I take it that normaly means abandoned in the air? so possibly one candidate as if it is a Stirling part it would have to be a MK1 as Cable throttles were adopted for MK3 any help appreciated Kev