I use the blow side of a VERY CLEAN shop vac to pressurize the intake. Use
cardboard and a lot


good idea.......buttttt....

One thing to worry about here....

Some (most) shop vacs rely on the air flowing through the motor to keep the
motor cool...

If you run a shop vac to provide a low air pressure source and youve got it all
plugged up so that very little air is actually FLOWING...I imagine you could
destroy it pretty quickly...

If you are gonna do this, you need to alternate short periods of time where the
vac is providing pressure but no real air flow with significantly longer
periods of time where you allow the air to flow freely to cool the engine back
down....

Note that just running a short period of time with it plugged, then shutting it
off wont really help in the cooling department....unless you wait on the order
of hours before you crank it up again

Maybe Im being paranoid and/or shop vacs today are built like brick
****houses.....but I m cheap enough to not risk a couple cases of beer money to
find out the hard way....

Oh yeah...NEVER ever use a shop vac to clean out a charcoal grill or fireplace
even if its been days since the fire...and as if you need to be told
this....never use a shop vac to clean up a gasoline spill (yes I know someone
who did this)

good luck!

Blll