Its a beauty DD and it confirms what steve newing from speed tech said that you could use rb20 turbo pistons as cheap forgies with a little mod or the stock na ones for budget application.
But I wonder if 21mm is too much for the rods?

I am using A14 block and head.
A15 crank and rods. Though A14 rods are the same.
ACL # 2699 UC Mazda pistons which start out dished. I have milled them flat as they stick a few mm out of the bore if you don't.
If you take a look at my carppy site you'll see a pic of the block with pistons assembled.
Mazda pins are 20mm so the small ends of the rods need to be enlarged.
Mazda pistons are 77mm std so 40 thou overbore required.

Dattoman:

Could you supply details re your Mazda piston setup in an A-15? Thanks very much.

Jack

D, have you seen this site? It looks like an analysis or discussion about A-series rods:
http://www1.ocn.ne.jp/~aori/driving/sunny_2.html

feral's picture of rod comparison:

The same with me id like to remove the dizzy but to keep it to run crank angle setup defeats the purpose. Love to get my hands on an electromotive setup which eliminates the dizzy.
About the conrods then its amazing they turboed this engine to 250+hp before they fall apart. Well thats maybe using different con rods and other stuff as the case most likely in that 85? bathurst exa driven by a fast chick. E15T smaller mains explain their problems with durability.
L20a rods skinnier than a14 ones? thats a find and a halve. go the little big internally boned A.

Crank angle sensor is just ... a sensor.

You can get ignition systems for four coils, or standard coil. Yes, you can use a crank angle sensor with a distributorless system.

The electronic distributor works very well, and goes up to higher rpms than a point system can. The A12GX used dual points to extend the dwell at higher rpms. The electronic system doesn't need that kind of complexity.

oh is that all it is?

i thought you could replace dizzy with crank angle sensor and coil packs???

im getting an elec dizzy which would make a crank angle sensor useless to me anyway in that case

E15 rods have a 44mm big end journal id and A14/15 rods have an id of 48.1. The E15ET rods are2.5mm narrower than the A series rods though
Centre to centre length of the E15 is 137.5 so are 4.5mm longer than the A14/15

The rods cannot be modified to suit A series engines due to the con rod bolt hole spacing.

Of interest is the L20A rod that is the same dimension in the bottom end as the A14 rod, but uses a 20 mm gudgeon pin. The body of the rod is skinnier though. Pic being posted now.

Crank angle sensor is simple. It replaces the points with a sensor, so instead of hooking up the coil wiring to the dizzy, the wires are attached to the sensor (more or less).

It does not replace the distributor itself meaning you still attach the four sparkplug leads to the distributor cap.

pic