Re: [Fot] Vacuum System and SCCA

[Mark J Bradakis <mark@bradakis.com>]

I would think that the prohibition was the result of worries that a
backfire in the exhaust might ignite fumes in the crankcase, or
perhaps they were worried about oil getting sucked out of the
engine and spread on the track.

Neither scenario seems like a major issue to me.

mjb.
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