I would say it is on the order of ten or twenty pounds in favor of no
turbo.

My large size non water cooled type (am searching for a diesel truck
type turbo) aircraft spec turbo (off an IO 520) weighs 26 lbs bare. No
manifold extension for clearance to intake, shields, supports, gaskets,
piping, fittings, manifold, wastegate, etc, etc. But at least it 'might'
support the flow.
I think Paul's approach is more sane, ie use the stock stuff as much as
you can. I can't, my stuff is oem tt type set up all the way.

[Marc Wiese]

 
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