DeHavilland Gipsy cylinders - interchangeable?

[ChemicalChaos]

Hi all,

I have the chance to acquire a DH Gipsy Six/Queen engine for static display, but 4 cylinders are missing from the crankcase.
I've got a lead on some Gipsy Major cylinders but there seems to be some confusion over whether they will fit. All the info I've found online suggests that the design, bore and stroke is the same as the Six was essentially a Major x1.5 - but a mate who knows a fair bit about these sorts of things insists they are different and they won't fit.
Can anyone confirm either way please?
Thanks!

[Simpo Two]

Wow, possibly the most specifif question I've ever seen on PH!

Are we talking about 1/100ths of an inch or would a Mk 1 ruler help to rule them out/in?

[grumpy52]

If its for static display does it really matter ?
Not trying to be clever !

[Ean218]

Simpo Two said:

Wow, possibly the most specifif question I've ever seen on PH!

Not really, he hasn't stated whether it is a Queen I, II or III.

[Eric Mc]

You probably need to talk to some owners of pre war De Havilland types.

[kurt535]

I think you will find the parts are interchangeable? Im pretty sure that how Mr DH made it.