Damn that's tempting, I only live around the corner I'm pretty sure.

Happen to know what the differnce is dish size is? I'd also thought about using A14 pistons with a well chosen decompression plate to select piston/ head clearance (keeping in mind the 2.5mm extra compression height). Sound whacky?

What sort of Mazda pistons? (if you don't mind sharing)

I'm thinking about piston swaps that would bump up an A15 compression ratio up, the thread got me thinking about it. Wouldn't it be sweet to find a standard flat top piston to swap in, preferably without resizing things.

Probably just getting carried away, too many other things to do before building hi comp motors.

Seems to me there'd be quite a few motorbike pistons around the 76mm size but I can't find a good catalogue like the ACL one I found for car pistons that shows compression height, profile, oversizes etc.

Any hints? This has got me curious.

What about GA16de pistons? Anyone know the dish volume. They're 76mm diameter with a comp height of 29.1mm and a pin size of 19mm. That'd put it 0.9mm down the hole.

For me I'm just thinking aloud and I only ask because you guys are such an oricle of Datsun knowledge.

The inspiration was reading about e85 and the idea that with this fuel or water injection you can dramatically increase the compression ratio. Made me wonder how feasible it would be with a piston swap.

Cheers

Any update on this thread? Success or failure with cut down A14 pistons? How much would a set of flat top A15 pistons be anyway?

Yeah, not really a need but it's a little noisy and the oil was a bit ominous when I changed it...

Bringing the diff to Melbourne for a holiday any time soon