Ummm
Does it have the same bore spacings as an A15
The Stroke is 1mm longer, bores 0.5 bigger
Could it be a reworked A15 engine?
Would love to see the head pattern and crankshaft
to see if its possible to use those parts in an
A14 or A15 block as the head design looked good
on the K25 but no idea of the K15 visually.

Considering A15 engines are so rare now this
could be an awesome upgrade

A13 stamped still A13 though for if you bore it to 75mm you get pseudo A14
It has an A14 crank stroke and taller block than A12 or is it same height as A12?

A12A sounds like the big block version of the A12!

DD did you find what bore and stroke the K15 engine has?
its the only one missing in the chart
https://jp.made-in-china.com/co_union- ... n-Kit-K15-_heignriyy.html

where does the A12A fit in DD if Murica got mainly the old A12?

Yes sugar spirits can make any A12 a beast with boost
Bert whats with your setup?

dont know how "turbo" got in front of pistons!
but meant using 75mm pistons would make sure
that rusty bores are fixed after 2mm bore and honing

bore and hone for a14 turbo pistons, e85 can handle surely 150hp
If tune is good double hp possible & will have better tq than sr20

Like the original 240 the Zero has borrowed lines from beautiful
sports cars of the last 2 decades but keeping it all retro 60s
You can see Aston Martin, Jag, Porsche and other beauties in it
No sharp fins, overdone spoilers an tacky transformer like rubbish

Like all A12 engines ready for turbo from factory :)

Baker was awesum!