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Given Miks mediocre knowledge at best... He may be onto something. The amount of money that you would have to outlay to do such a project would outweigh any potential gains in economy, a nice thou donk with straight gas and mild boost, possibly injected lpg. Theres economy. Besides, economy can be measured in many ways. Just because you get good milege it doesn't nessicarily mean that it's cheap to maintain. I think that you should do the electric conversion. If I knew more about that stuff I would be keen to give it a go. That and the lack of $10K + to get it off the ground.

As for the conrods, if you are going through that much trouble then you might as well get them custom made for $450 each through Orger Engines to any spec that you require.

http://kuvablogi.com/nayta/1012076/
here..

but what about torque, cant see a a6 doing much even boosted, i feel that a better built a10 with balancing would do a lot better in bossted form and with the increased torque would be better for economy due to not having to rev the crap out of it up any sort of incline... i know 400cc but still almost double the capacity and on lpg, would be a miser

whats the fun in that?

Nah seriously a simple A6 on boost would do for 70hp and good economy
654cc
76mm bore
70mm stroke
The only issue is finding 126mm rods to allow for better rod/stroke ratio
of 1.785 or so to smoothen the nervous shaker
Does anyone know of any 125mm rods or there abouts? I know toyota 4age rods
are 122mm but .5mm wont cut it.

or even better the ma09ert. From the nissan march superturbo............... That name makes me laugh everytime!

Why not just convert one of the ma10 micra engines to rwd, aren't they only a 1000 and turbo from factory?
Or is that too easy? :)

I used to have a sherpa but the truth is it was no more economical as an a10.
Id like to keep it nissan if possible at worst a 700cc A6 with boost
the gearbox mount could be made using the side engine mounts for extra
support. A kind of C plate to cover hold the rear main seal and bolt up to the
engine mounts, exhaust side of the head and inlet side.

I think now on looking at several Diesel engines and the limited info
Ive done a backflip and decided the L20B engine with a Ka24e head would be the go.
Everything is in the right place with oil pick-up, dizzie and mount on the front
section of the block.

The Ka24e head has two large inlet valves at 34mm and one fat 40mm exhaust

Have you considered the subaru sherpa engine, its essentially half a boxer 4. My wife used to drive around in one, years ago, and i remember that we drove it to brisbane and back to sydney on around $85. From memory it was around 550cc and was a crosflow OHC engine. It just kept on going.

edit: I looked it up on the web, advertised engine specs are as follows.

Subaru Sherpa / 700
1982 - 1989
Engine: Water-cooled 2-cylinder
Capacity: 665 cc
Power: 27 kW / 54 Nm
Transmission: 4 spd. man
Top Speed: 125 km/h

Pete you are mad Nah seriously Im in the same boat
looked into a v4 halve chevy 3.2 motor.
The Kawa v-twin is so expensive the v4 sesco type motor is cheaper
in the end.

But the exercise now is an easy to make nissan twinnie in either
lpg/turbo or diesel.

DD thanxs forgot about the a6 naming quite logical really

It is the infamous A6 Engine