|
Message
Greetings,
Well, I'm 3 for 3 with the
local DAR, and now have an airworthiness certificate for the plane. This
is getting easier every time, and I didn't anticipate that it was going to be a
problem.
As soon as he left, I
started replacing my primary injectors. Of course this meant pulling the
turbo and intake out of the way enough to get the injectors out. That
was all pretty easy, since I didn't have to remove any hoses or anything to move
the turbo and intake a couple inches. The new injectors are in,
and don't leak fuel under pressure. Unfortunately, I couldn't run the
engine due to the incredible thunderstorms. Heck, I feel lucky to be
alive with some of the lightning that was hitting all around my hanger
:-)
Now, here's the problem of
the day. I used that exhaust wrap stuff that everyone sells for wrapping
headers, but I wrapped the turbo with it. As I was removing the stuff
to get to the nuts to remove the turbo, I found that it had cooked into a
hardened form, and literally crumbled to (irritating, fiberglass-like) dust
when trying to get it off. It was OK on the pipe itself, but anywhere
that touched the turbo was toast. This sort of puts me back to square
one with heat shielding. I can probably go ahead and run the engine
tomorrow, since the top cowl is off, and there's plenty of airflow, but I
will certainly need to do something before closing up the cowl and
flying.
Option 1- I can
probably make a flat stainless shield that would go between the intake and
turbo. This would block the heat from the intake, but wouldn't protect
anything else. If I do this, I'll need some sort of heat coating
for the inside of the
cowl.
Option 2- I still like the
idea of wrapping the whole turbo with some sort of heat insulator, but need
suggestions of what could be used. Eventually, if the turbo is
working out, I'd probably buy a new turbo and manifold, and have them
ceramic coated. The current turbo and manifold are Ebay items, that I got
cheap. The manifold has the standard cracks, and the turbo has a bit more
play than I like in the shaft. I never had any plans to run these for a
long time, just long enough to prove the turbo is worth
keeping.
So, for all you folks that
know more about heat shielding material than I do, what should I be looking at,
and would you think this material would be suitable for wrapping the turbo
itself?
Thanks for any
suggestions.
Rusty (legal, but stupid
enough to fly yet)
|