Quote:
Originally Posted by PoorMans180SX
A quick spool valve on a divided manifold would have to be a very complicated design, being that you can't just block off half of the exhaust manifold. Interesting none the less.
I am really looking forward to when Borg finally gets all the kinks worked out and has production levels up to par.
|
It's not that complicated. You just flow both entries into one scroll, then open it up to flow each entry into its own scroll.
Basically doubles the A/R but you don't get tons of losses at higher RPM where you're running a divided housing on an open collector.
Really not that hard to make it reliable either, considering internal wastegates put up with the same environment and function. Those go for longer than a turbo will last.