Originally posted by Slammed420A I've seen people do it, but never in a 2gnt. How hard is it on the gearbox? Sorry so many questions, but with no slicks, I'll want every advantage possible this year to gain tenths on the top end.
You're not bugging me by asking questions, lol. It's really not that hard on the tranny. Athough I ran into two problems so far with our cars. One was solved by replacing my Spec clutch (Grr), and the other I haven't been able to solve yet. I'm having problems speed shifting above 8k. I don't know if it's a bent fork or its too much for our trannies to take. I can speed shift below that but that would make my 1 to 2 shift a short shift in the power range. I've speed shifted on trannies with 200k on them with no adverse effects. So, if done properly, it really won't hurt them. The hardest part about learning this, is unlearning what you are used to. Your reflex is to lift on a shift. To learn no to lift just sit in the car without it running and shift with your foot on the accelerator, getting used to not lifting the right foot. Then take it out on the road and do it at about 4k (practice on 1 to 2 or 3 to 4, wait on the 2 to 3 shift until you're comfortable). You will have to talk to yourself at first so that you don't lift. Once you get it down it becomes natural at the track. But here's the funny thing. When I first started using slicks, I did not use them because of the launch. I could launch pretty much the same on drag radials as slicks (at that power level). But I used them for the 1 to 2 speed shift. It kept my spinning down to the minimum (but its still better to speed shift). And honestly, you can gain tenths on this.
I don't "speed shift" or "power shift". I have always though that is to much of a shock to the tranny. I did it once with the Megasquirt Flat Shift option "on" and I damage my tranny. 4th gear started grinding after the first try. To me, speed shifting is to much of a risk for the advantage. This can be due to the high torque engagement on a turbo vs a N/A application. As for the launch, the Spec Stage V clutch has an iron disk, it has a minimum slip at first when I release the clutch pedal so the shock to the tranny/axles is low. It will slip a little, then it will grab hard. I even started launching the car burning the clutch a lot, now I pretty much releasing the clutch with no fear on breaking the factory axles. Bullettdsm, your times on your 2gnt N/A are awesome. Keep it up!!
