I get this strange vibration in my clutch pedal under hard acceleration when I let off to shift. Does anyone else get this?
Yep, if you know how to speed shift you can make the shifts faster than any of the slush box trannies (autos). Last time I tried it was with my GTO and besides the burnout at the beginning, I was squealing tires in 2nd and 3rd. Beat a very nice Trans Am at the beach. Thank God there were no police around. I've since reformed.if you are under hard acceleration, don't let off between gears to shift keep the right foot planted and keep banging until your satisfied
I'm not that up to date on newer automatic specs as far as shift times. Back in the days of TH350 and TH400 (GM) trannies, yes you could shift faster (theoretically and some people in practice) than the auto would shift. With a good clutch and good driver, the gear engagement would also be more definitive. (Hence the term slush box for auto trannies). Each shift can almost make you feel a leap forward.Is it possible to go through your gearing faster in a manual than in an auto? I mean, is there a safe shifting technique that can be done?
It certainly can be. Not something I would try with a $35-$40K car. Especially given that a lot of the manual tranny issues are not covered under warranty.So do you mean literally applying WOT the whole time from Gear 1 and never letting off of it, while still clutching and shifting (while suppressed on the gas the whole time)?
Holy crap it sounds like suicide on your trans!
Exactly, and also:Fair enough lol, so I guess the most optimal process is still:
1. Let off Gas
2. Suppress Clutch
4. Let off Clutch while Applying Gas
5. Floor it :bigthumb:
I haven't noticed that. I've power shifted 3-4 a few times and it didn't seem to close throttle, but I wasn't really paying that much attention.add in the fact that these cars automatically close the throttle on you when you hit the clutch......
Not a big deal as long as it doesn't create a noticeable lag.it happens in the blink of an eye. I can see it when I datalog. I cant feel it when i powershift (rpms seem to increase during the clutching). someone o n here actually made a video of it blinking closed and reopening during the shift
I'd like to see a video of that speed shift!To be honest, I've always found Tremecs to be a little notchy and tough to power shift, even with the best aftermarket shifters. Just stick with practicing the normal shifting method as fast as you can. Remember that you don't need to completely lift throttle when speed shifting and you only need to depress the clutch pedal to the point where your clutch is slipping, not all the way to the floor. It should all be one smooth and quick motion.