L series or LZ18ET, no pollution gear, L20 crank in L16 block
machined mains for 82mm stroke with L14 rods from malaysia
w/ 1.5mm shaved Z20E slugs = 1.9L combo 2cm shorter block height.

L14 is rare over there? here, i only saw 1 L14 in my mate's PB210.

and a couple of rumored 510 with L14 motor, but never see them with my eyes.

Sory for the late update .....the motor: 1mm oversized pistons,double valve springs,re-ground cam,head port, triple cut valves and raised compression ratio ....I also already have kiehin fcr quad carbs,e15 dizzy and extractors...
So should I go a little further with the a12 ? And run methanol or maby e85 ?

Yes, go alittle farther. Dyno it now, then after you convert it to alcohol, dyno it again. Let us know how much the HP drops. It shouldn't be very much.

Have you heard the new Mazda will have 14:1 compression? It has 12:1 this year. And runs on petrol.

Would love to dyno it now but......the engine is all over my work bench :P
And no I haven't herd about that Mazda ....14:1 on pump that's :o ok I may have to do more research

The reason they can go so high on the comp ratio is because of direct injection.

The fuel is injected into the combustion chamber very late in the compression stroke. This helps prevent detonation.

Us poor folk that have to put up with port injection need to use good fuel as a detonation counter measure.

My turbo A12 has a BMEP of 285 using E85.