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SignUp Now!Anyone using this turbo other then me? I'm having a hell of a time spooling it, any suggestions? Car has run 10.20@131 @1.46 60ft launching @15lbs and running 24lbs @ atco for the downs ford/buick day(last time out)
A 5500 convertor should definitly get things done. I had a LOT less than that when I had a similar combination. What's your timing and A/F at spoolup?
BTW: When you do get it sorted out, watch your injector duty cycle closely. That fuel pump/injector combo probably won't get it done.
Set your transbrake, bring the engine up to the typical rpm you use to creep into the stage light, then WOT it on the transbrake and take a note, or datalog, of how quickly the engine reaches stall AND, more importantly, how high the stall speed is. Play with mixture and timing until you get the quickest rpm rise AND the highest stall speed out of the converter. As you narrow in the tune, you will notice, just by feel, the engine becoming snappier and the stall speed of the converter rising to a higher level. The more torque you put to any particular torque converter, the higher the stall speed will be. You can use the stall speed of the T/C to roughly gauge whether you're increasing torque or not. Kinda like using the T/C as a water brake dyno.
I wouldn't try and reach stall speed. Once you get over the "hump" that turbo is gonna try and run away from you. On that convertor, stall is probably 6-7000 rpm depending on how much boost you hit it with. I would set a two-step for your launch rpm and log how long it takes to get to it. Just my .02