Well, we all agree on one thing, a cast crankcase is cheaper to produce. So they cost less, when its time replace a damaged unit this is a plus. That said there inferior structurally… Chances of having to replace one are far greater than with a Taurus machined case. And yes, there are benefits associated with "design" freedom. It has been proven time and time again that there are decided advantages in varying crankcase/block designs over the years, there is no doubt here…

I would not consider replacing the three 3W-150SS lightweight engines I have in lieu of a cast verses machined crankcase. However I feel the machined cases are far superior… I have a DA-150 and DA100, in this instance the case was not the deciding factor…

We don’t really know thus far what the life expectancy is barring an accident on either engine, makes sense from and engineering and metallurgy view that a precision machined, hand fitted engine of superior design and components will last longer than the latter. Performance should also be better, just makes sense. Mercedes last much longer the VW’s….

T6-6061 aluminum alloy is used because it is more than adequate for the job, availability, cost and tooling characteristics. Without doubt there are many superior alloy compositions available. T6 is substantially better than the cast alloy used in manufacturing ZDZ cases; additionally it’s heat-treated.

Used Taurus Engines are not available because they have only been available to the public for three years. They’re not mass-produced and or mass advertised. Each engine is built to order hand fitted, assembled and test run, individually. Those that own them are keeping them…

If we run out of pages on this thread we can start another thread, lets see what we will call it??? Taurus, or the rest???
Cheaper works? Rear intake really sucks? Side intake, why? Rear exhaust , yeah. Or how about What I own has to be the best because I say so...

I am having fun with this thread, thats what it's all about.. Right?
There's nothing like a motor-head/ego-strokeing... This has got to be male bonding at it's best....

Ya'll have fun now, Tell next time...

Michael