Originally Posted By: gaijinnv
We are talking INCHES OF WATER (IN H2O) NOT INCHES OF MERCURY (IN HG)!!!!!
Suck on a straw and it is easy to reach 10" H2O.
A properly installed filter minder can most certainly reach 10" H2O on OP's vehicle with a clogged air filter.
HTH
Yeah, huge difference between the two! 10"WC (Water) = 0.74"Hg.
I would personally not try to undersize the hole, just follow the instructions. The grommet will expand when the gauge is inserted, ensuring a good seal. I could see it possible that undersizing the hole might even make it harder to install, or possible cause damage to the grommet. Why not follow the instructions from the manufacturer? I'm no air filter restriction gauge expert, but I would guess that the manufacturer may know a little about their own product.
We are talking INCHES OF WATER (IN H2O) NOT INCHES OF MERCURY (IN HG)!!!!!
Suck on a straw and it is easy to reach 10" H2O.
A properly installed filter minder can most certainly reach 10" H2O on OP's vehicle with a clogged air filter.
HTH
Yeah, huge difference between the two! 10"WC (Water) = 0.74"Hg.
I would personally not try to undersize the hole, just follow the instructions. The grommet will expand when the gauge is inserted, ensuring a good seal. I could see it possible that undersizing the hole might even make it harder to install, or possible cause damage to the grommet. Why not follow the instructions from the manufacturer? I'm no air filter restriction gauge expert, but I would guess that the manufacturer may know a little about their own product.