Quote:
Originally Posted by Baltothewolf
Tbh it's not worth it, I would never mess with the cooling system on a car, especially when it works. You could take that 70$ and buy a looooot or Coloplast for aero mods that would add significantly more mpg.
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I've learned that when it comes to car parts, $70 is chump change. Any little part you can imagine on many cars costs more than that.
That's not the point though, my point was more that the $70 isn't buying me much underdrive, and I want more.
The 2ZZ idles at 750rpm stock, and it has a properly shaped impeller that flows much more than a typical stamped steel pump. I think it will be just fine spinning 10% slower. Clearance might be a bit tight since the AC, crank, water pump, and tensioner pulleys are so close together, but I think 10% is pretty reasonable.
Any ideas on how to make this not-yet-existent 10% underdrive pulley? 3D printed plastic parts make me nervous, but maybe I'm too paranoid.
For reference this is what the MWR pulley looks like:
