why a custom built converter isn't for everyone....

318willrun said

Exactly what I mentioned earlier. People call and tell their build, and most of the time one of their "off the shelf" already built converters is close enough to fill the bill and that's what they ship. People get all shook up because they want to think every turbine was fully implemented with their build, and only their build in mind. So many builds are so similar that the need to weld every tooth on the ring gears especially for Jon Doe's car is ridiculous.

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I gave you an example, a real world example of two almost identical combinations taking two different converters. I can’t speak for any other than PTC, but I know when you call them they don’t have one “on the shelf”. Two identical 9.5 inch cases with different internals.

It’s the same with cams. You call Comp their job is to sell you a cam on the shelf. You call Racer Brown, or Bullet, or Cam Motion and they pick the lobes, the LSA and that’s what makes the difference. Jones too.

So they are custom converters and cams.