I measured difference in block height for 1300 and 1600 crossflow engines (from centre of crank to top of block) to be 40 mm.

The difference in 1/2 stroke is 8 mm and difference in conrod length is 20, so total is 28 mm.

This leaves 12 mm unaccounted for - anyone know where that has gone?

(Doubts about my measuing is creeping in but pretty sure I got it right).

The height of the piston to the top of the crown?

Are newer crossflows still using dished pistons and flat heads? Just curious.

I though you'd lost a spanner from the title!

standard tuning practise is to fit psiton from smaller capacity engine (1100 -> 1300 and 1300 ->1600) since the cimbustion chanber in piston varies, hence upping the CR, hence I owuld guess the distance from gudgeaon poin to piston top is the same.

quote:

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Originally posted by whitestu
I though you'd lost a spanner from the title!

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02GF74 - how many taquillas have you had?

Crank throw? Determines stroke for increasing the capacity if you get my drift

quote:

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Originally posted by coozer
Crank throw? Determines stroke for increasing the capacity if you get my drift

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piston height

Rod length - 1300`s are shorter .

As said, it's probably piston height above the gudgeon pin.