The sonic testing is to find core shift, variations in the casting. Cutting a block I think won't tell you about that since it varies in each block.

I was going to say "impossible" but then i saw it was you. I don't know if anyone has boosted a 79mm overbore. Offset boring is best -- use a sonic tester to locate the thinnest portion of the wall and then bore accordingly. That's what they do with early A12 engines when doing large overbores (early engines have thinner cylinder walls).

Are you going to use head studs and o-ringed bores?

Why build manifolds? Just use the stock engine, 115HP, 50% more than an A15 without any mods.

The hybrid above is interesting, but why not just use the entire GA engine?

Here is the journalist's idea of a 120Y. For some reason he thinks the rally car's attitude is indicative of poor handling.

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Yes, you can distribute power wirelessly, it is being done today. But what didn't work was generating large quantities of electricity for free.

Quote:

What oil cooler? None of the E-series engine I looked at had an oil cooler. Maybe only the E15ET has it.

For 1978 and newer 1200s:

Yes, standard on the 1992 1200, but not variable-speed intermittent.

In NSW, if you exceed 15% it will require an engineer's certificate.

Extra "flow" fuel pump won't cause flooding.