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Message
New problem: melt down after shut down. That turbo has
a lot of very hot mass. I flow enough air through the cowl when running to
keep things cool. Right after shut down the cowl is just luke warm to the
touch. But 5 min after shutting down the turbo side of the cowl is too hot
to touch on the top and I can smell resin. It gets a little soft to
tap on it and it is starting to look a little mottled and maybe yellow (if
I let my immagineation run away). I have seen a couple of RVs with drop
down hatches in the top cowl to let heat out after shut down. Does anyone
have an idea about how hot I can let the fiberglass get? Bright
Ideas?
Hi
Dave;
When I first began to run with the cowl on, I experienced the
same issue after shutdown, however it created an issue with my creative air
intake, which is located directly above the turbo (pic attached). The
after-shutdown heat soak caused the trapped air inside the foam to expand,
severely blistering the intake (It looked awful). I drilled a few small holes
through the inside of the cowl into the inside of the inlet duct foam to release
the air pressure and it went back to close to original size/shape. After a few
cold nights it had completely gone back to shape and I've not seen it expand
again after shutdown.
Hopefully that will be the end of it as I don't feel like
redoing it. The inside of the cowl does have a very slight brown tint to it as
well. I may follow Ed's lead and put a little heavy aluminium foil on it.
So I wouldn't get overly concerned about it. Of coarse your California OAT may
be enough to make a difference. A hot day in Canada would be a cold day for you
:-)
S. Todd Bartrim (going
purple)
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm
"Whatever you vividly imagine, Ardently desire, Sincerely
believe in, Enthusiastically act upon, Must inevitably come to pass".
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