That would be the PCV (positive crankcase ventilation) valve. IMO,
this is a good device to have in place if you can manage it. It draws
blowby gases (combustion gases that leak past the piston rings) out of
the crankcase and put them back into the combustion chambers where
they get a second chance at providing energy, reducing pollution, and
keeping the crankcase pressure down where it belongs. One of the
cheapest, most effective, and innocuous devices -- even helps fuel
If you DO plug it, make sure the crankcase is ventilated properly or
you will have oil spewing out in more places than Triumph designed for
-- like dipstick, oil filler cap, rocker cover, sump cover, rear main
seal, front main seal ...
> From: Craig Smith <CraigS@iewc.com>
> Date: Mon, 10 Jun 2002 09:48:36 -0500
> I installed my HS2's this weekend.
> Everything going well so far.
> Got one deal I need some help with,
> There is a hole in the intake on top that a vacuum thingy went in.
> It looks like it's around 5/8" in dia.
> I don't want to tap it, I would like to put a rubber stopper in it !
> Anyone with any experience with this ?
> Craig Smith
> Industrial Electric Wire and Cable Inc.
> 36 Pelham Ridge Drive
> Greenville, SC 29651
> (800)692-2323 Ext 2105
> (864)234-5300 Ext 2105
> (262) 957-5705 Fax
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