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Message
I am planing to put a turbo on my coot and I plan to install a huge
waist gate that will be used a a dump valve to shut the turbo down, also on the
intake side I will have a bypass flapper valve that will let cool fresh air in
when the turbo is shut down, most bigger turbo setups have these incase of a
turbo failure.
With this setup you can have your cake and eat it to, use the turbo
when you need it but for economy cruise your better off without it and your not
putting unnecessary ware and tare on the turbo, also a great safety factor as
you will be coming down if you ever lose a turbo and with this just kick it in
bypass mode.
All of this shouldn't take up much space either.
Interesting idea, but here are some things to consider.
You will probably need a muffler if you bypass the
turbo. This isn't a negative if you planned to have one anyway, though you
certainly don't need a muffler with a stock turbo and manifold. I have
to figure that you're talking about using aftermarket stuff here,
and you may very well need a muffler anyway.
Bypassing the
turbo will help with some failure modes, but not all. Any sort
of failure on the compressor side side of the turbo will send broken pieces
of metal through the engine before you can shut it down. An
intercooler will probably catch the bigger pieces, but it'll be game over
if you trash the rotors. If you use a filter, I don't think
this will be a very likely failure mode. I'm betting that most damaged
compressor blades come from ingesting objects, which would be bad even without
the turbo. Of course I have no filter or intercooler, so I guess I'm
SOL.
I'm not sure
how much wear and tear will be saved on the turbo. A good turbo will run a
long time before you wear it out. I really think that's the least of our
problems.
I can't argue
with the idea of saving some fuel at economy cruise power settings, but for
me, it wouldn't be worth the trouble of installing the redundant exhaust and
bypass. I'm guessing that you're planning to use a part time turbo for
takeoff, instead of NOS?
Cheers,
Rusty (not a
turbo expert)
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