|
Message
Greetings,
I bet if you looked in the
archives, you'd see that I recently said the stock Mazda turbo could take the
heat. Well, I'm sorry to say that I no longer believe that.
I just dissected a "low
mileage" Series 5 turbo, and found that it was crack city inside. Man,
there isn't a single area of the high temp side of the housing that doesn't have
some sort of crack. All of these are hidden from external view, so the one
on my plane now is likely cracked in just the same way. The latest exhaust
manifold that I got from Ebay is also cracked, despite the "no cracks"
advertisement. Even with the crack, it's way better than the one I
currently have installed. Sigh...
I have now decided, that
the stock turbo is not going to stay on my plane for the rev-2 cowl. The
wastegate sucks, and turbo just isn't high enough quality. It's one thing
to run around in a car with cracked parts, but not in the
plane.
What does this mean?
Good question. I don't know yet. I don't "need" the
turbo, but I "want" it, so I'm going to look into an aftermarket turbo.
This one would be properly sized, have a stainless exhaust manifold,
and usable wastegate. Why do I do these things to
myself... If I come to my senses somewhere along the line, I'll
be going NA, and still having more power than I need for an
RV-3. I'd have to attend the EDKILL lecture though
:-)
Rusty (my kingdom for a
turbo that isn't cracked!)
|