Peter

Let me pose some what if's.

I have a turbo normalized engine. Going cross country I cruise at 5K
and 65% power. Turbo is off.

I then go on another XC and cruise at 15K and use turbo to pull 65%.

Are you saying that cruising at 65% with turbo on will do more damage
to engine than pulling 65% with turbo off??????

I'll agree that the turbo will require more maintenance it used but
engine no if run within engine manufacturers specs.

Big John
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On Mon, 16 May 2005 14:36:27 -0700, "Peter Duniho"
wrote:

"Robert M. Gary" wrote in message
roups.com...
[...] In the Mooney
community is mostly agreed that a 201 (non turbo) will give you twice
the cylinder life as a 231 (turbo). Other wear factors (heat, less air
over the cylinders) are the same for turbo-norm vs. regular turbo. The
only difference I can see is the "idiot" difference of accidently over
boosting.

Exactly what Mike said. Any kind of turbocharging will shorten the lifespan
of a given engine. The whole point of a turbocharger, even
turbo-normalizing, is to allow the engine to produce more power in certain
situations than it otherwise would have. More power means more wear and
tear.

Turbo-normalizing isn't as hard on an engine as "non-normalized"
turbocharging, but it still makes more power some of the time than the same
engine without a turbocharger would (and on top of that, the increase in
power is in situations when the air is less dense, making cooling more
difficult...again, more heat, more wear). That time spent making more power
results in more wear and tear.

Pete