For those of you who use the TRD boost gauge with your supercharger:

What is the range your needle generally moves between the In.HG. side and the PSI side during normal driving conditions?

I just reinstalled my SC after a rebuild, and it appears to be dropping deeper into the IN.HG side (near 20) than I remember during its prior installation. This occurs when I let it idle or let off the gas while driving. I seem to remember it hovering around the 0 mark between In.HG and PSI at the top of the gauge. The gauge still registers 6 psi when I pin it, so that side of it appears to be normal.

Do you guys usually see this much fluctuation, or have I screwed up somewhere in the reinstall?

While we're on the topic, what the heck does In.HG. stand for anyway? I googled it and found out that it is a measure of atmosphere, but have no idea how that relates to the function of the SC...

Thanks for your help

 

Hg is a measure of vaccum.
Hg is mercury

 

Anyone know the standard range the gauge should fluctuate in a 2000 Runner?

 

the more vac the better. mine is pined on the vac side at idle and makes about 6 or 7 pounds of boost 04 tacoma 3.4 stick

 

In.HG is the abbreviation for inches of mercury. It is a calculation to figre vacuum, something about how many inches of mercury it can pull at that -PSI, or vaccuum.

 

My 2000 SC'd 4runner pulls ~20HG when at idle and up to 7.5 to 8psi in boost. And it is normal for a SC to pull vacuum when at idle.

 

Thanks for the responese! Seems like my supercharger is even more "Super" since the rebuild...

 

Double ditto.

 

Tripple dipple ditto