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Thanks for the comments Geezer101, but in fact, there are quite a few things I'll probably be doing different for the FULL builds I'm planning.
A lot of the things I'm doing are just to test a few theories, short term, to make sure my 14.5:1 CR engine will perform AND survive some possible "high country" driving planned for next year...



Cheers.

Any reason your using aluminium buttons for gudgeon pin instead of the Teflon ones?

First time I have seen aluminium being used for these.

superscan, not sure why or if its my pc, but none of your pics are loading tonight ...

SteveG wrote:Any reason your using aluminium buttons for gudgeon pin instead of the Teflon ones?

First time I have seen aluminium being used for these.

Pistons are aluminium, and it's much lighter than Teflon.

Billsy wrote:superscan, not sure why or if its my pc, but none of your pics are loading tonight ...

Doing a few upgrades to my VM server so my Web server has been down. Should be up now.



Cheers.

pics loaded now

valves looking good, and i like where this R&D is going

Found a set of pistons off another type of engine, that fit quite nicely.
While these are cast pistons, they have quite a few good attributes.

92mm diameter with a 35mm or 39.7mm compression height (std high comp Astron pistons are 36mm).
Lighter than the standard 2.6L Astron pistons.
Same gudgeon diameter as the Astrons but they are shorter, and therefore lighter.
C-clipped gudgeon (perfect for the Ford rods).
Drilled holes for the oil ring return rather than a large slot in the piston skirt.
Friction reducing coated skirts.
Cheap..
(also available forged, and I'm currently looking into their pricing).


STD


New and improved

Over 267g per piston/rod assembly, which is a 19% weight saving.

NOT BAD.....



Cheers.

its been a while, any updates on these pistons and the engines progress?