turbo: blow thru vs. draw thru
Boost is controlled by the A/R ratio of the turbine housing size and it has a small bypass hole the housing that can be adjusted. Also ignition timing has a part of it. Correct A/R housing (mine are 1.0), hole is plugged, timing under boost is 21 degrees. Starts making 5 psi boost at 3000 rpm and 10-15 at 5000. But I can’t hold on to the handlebars long enough to stay at rpm. Gears are 2.73 (C4 Corvette trans and transaxle) trike weighs 1250 pounds. Halfway through 3rd gear I’m hitting 150 and climbing fast. Never have maxed it out because I can’t hold on from the instant acceleration and pull from the torque.
