Snail-boy, I don't think I've ever seen an 'S' shaped engine. I have seen an
> I5 - 'I' for Inline...� =)

I use S for Straight, as in a Buick Straight-8.

"I" is confusing, as it is alsu osed to indicate that the crankshaft
lies along the car's axis (as opposed to transverse, where the crank
lies across the car... or bike).

Straight-4, straight-5 etc.

-- 
Regards
Andrew Grebneff
Dunedin
New Zealand
Fossil preparator
Mollusc, Toyota & VW van fan