Calling for lockup of triple disc converter not completely working
On a Circle D triple disc converter I am calling for wot lockup on upshifts. The shift extension goes to 5200 or so. Perfectly normal. But then it drops 400 rpm to 4800 before locking up. I asked around and I heard that is not normal. It is costing me time at the track. Any ideas?
2009 g8gt - rotofab cai, ported throttle body & FAST intake, 1 7/8s kooks shorties with 3 inch exhaust. 3600 circle D triple disc stall and tranni cooler, udp, hoosier 17 inch drag radials. 223/235 cam/gmpp Heads. HP Tuners. 416 with 11.3 to 1 compression.
best time: 11.47 @ 118.7 3000 feet da
best top end 119.4 4000 feet da
My triple disk goes from 6200 down to 5800 and then back up. Its normal
2008 NA G8 GT
1/4 mile = 10.93 @ 123
60' = 1.47
DA = 500
Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims
- ARANGO AUTOMOTIVE & TOWING SERVICES, WEBSTER NY
I looked in the partial lockup tables in hp tuners. I called for lockup in the last few cells in the partial tables to match the wot tables in the tcc tables. That seemed to help a bit. On your passes down the track which gears are you calling for on lockup? You are not calling for lockup between gears? That actually is easier on your converter. But kills the rest of the drivetrain including the transmission.Originally Posted by JonnyG2132
2009 g8gt - rotofab cai, ported throttle body & FAST intake, 1 7/8s kooks shorties with 3 inch exhaust. 3600 circle D triple disc stall and tranni cooler, udp, hoosier 17 inch drag radials. 223/235 cam/gmpp Heads. HP Tuners. 416 with 11.3 to 1 compression.
best time: 11.47 @ 118.7 3000 feet da
best top end 119.4 4000 feet da
I don't tune myself so I'm not sure when it is being called for. All I know is that at the top of 3rd, around 6200, it drops to around 5800 and then back up to 6800 and shifts to 4th. I was told to try and make it lock in 2nd, but I haven't tried that yet
2008 NA G8 GT
1/4 mile = 10.93 @ 123
60' = 1.47
DA = 500
Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims
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