The Supercharger worked EXCELLENT while Crawling. The 3RZ is a GREAT engine for Rock Crawling because it is nearly impossible to stall the dang thing. It just keeps on chugging away well below 700 rpm.
So I was a bit worried that, with the addition of the Supercharger, I would loose this ability. At anything under probably 1500 rpm, the Supercharger is actually a nuisance. It is nothing but a huge restriction on the intake and on the engine. Especially at 500 rpm, that Supercharger is simply "in the way". Superchargers are a Positive Displacement air pump, but because there must be certain tolerances, it can not achieve this until the rpms increase. There is an air bypass valve, but its such a small hole I really was afraid that I would loose the nice lugging ability of the engine.
But to my suprise, the 3RZ worked just the same! It lugged down nicely, although I was able to stall it a couple of times, which before I am sure it would have kept going. But overall, this Supercharger is working PERFECTLY. I have amazing power for the trip to the trail, and then it crawls superbly. And oh man, if you hammer down in Low range, WATCH OUT!! This thing is a rocket in low range! I've never wheeled anything with this much power.
And a couple of times on the way out, our tires were wet and we were having difficulty going up the Big Sluice. So a little bit of the skinny pedal was required, and man, Double Down in 3rd Gear was PERFECT. It is so nice not having to wait for any power band. Just whenever you hit the pedal, you are always in its power band
But, alas, there must be a draw back.............
HEAT
