TheMiniMan wrote:
looking good Steve,,, but it`s more like about 10.3:1 ,,, could do with more than that if you could lop some more off the head &/or block
the volume of all the fly-cuts ...plus the 8thou down-ness will make the capacity in the block about 5ccs-ish,,, maybe more actually (guessing)
add the head gasket (about 4ccs)
& the chamber (28ccs)
makes 37ccs all up,,, divided into 345 (1380 divided by 4) to give one cyl swept vol +1
& you have about 10.3:1
so,,,, more would be better,,, maybe try to get-rid-of another 4 or 5ccs from somewhere yeah?
well,,, sorry,,, best to make sure of it all first by grabbing a burette & cc-ing it all to make sure "Exactly" what you actually have there,,, but it`s lookin more like 10:1-ish than over 11:1-ish to me,,, ok?... & it will prefer 11:1-ish far better
edit--> Looking real nice tho Steve,,, you`re doin well mate,
Chambers mearsured today. 22cc's, this being the difference between the standard head and a machined head.
So recalculated on Matt's formula is
the volume of all the fly-cuts ...plus the 8thou down-ness will make the capacity in the block about 5ccs-ish,,, maybe more actually (guessing
add the head gasket (about 4ccs)
& the chamber (22ccs)
makes 31ccs all up,,, divided into 345 (1380 divided by 4) to give one cyl swept vol +1
11:1
BUT, contacted MED to find out if they had a measurement on the fly cuts.
This was the reply.
"The total cc area is 9cc including the cut outs within the 73.5 x 7cc ‘K’ conversion pistons’
Not quite sure what the 73.5 x 7cc means. Matt, you could be right there may be a bit more than 5cc??? If 9cc is the figure i'm down to 9.8
