I was wondering if anyone that tracks their tC power-shifts? I haven't done this yet mainly cuz i don't want to see my gearbox flying out under my car from the rearview mirror.. if anyone does power-shift.. got any pointers?

 

If you mean power shifting as keeping the pedal to the floor while shifting, i think it could handle it but would result in wheelspin when hitting second. So not a good idea unless showing off. Atleast with the supercharger it results in wheelspin.

 

Eh, a used tranny with 4k miles on it is only $500. Do it at the track and get us a slip..

 

Link to this tranny ?

 

isnt the tranny the same as the camry tranny like the motor is?

 

it's got different gearing.. but yea, I'd like to hear if anyone power-shifts in the tC..

 

i power shift in my teg on occasions, no problems yet tranny is 177k stage 1 clutch 8lb flywheel

 

Main wear points:

1) the clutch. . . you'll burn it
2) the synchros. . . you make your synchros work triple time bringing up the gears to speed.

Do you know why it's hard to shift into first when you are moving? That's because your output shaft is moving too quickly to engage the gear you are trying to select. Normally, a synchro smoothes out the shift, but first lacks a synchro.

Hold down the clutch and do an aggresive downshift. Do you hear that faint whir? That's your synchro.

Powershifting is going to wear the synchro in the opposite manner. . . and over time, you may find yourself FORCED to double clutch when shifting. Unless you're FI, you're not going to see HUGE gains from power shifting.

My advice, save the money you will spend on repairs, and invest in mods. You will be FAR better, on a performance/$ ratio.

But if you must rush your shifts, I recommend that you allow your revs to slow down enough to shift without killing your synchros. But when declutching, be more aggresive coming back onto the gas pedal.

Besides, if you are an experienced shifter, you should be able shift faster than the RPMs drop 500 revs.

500RPM below redline is still INSANELY above the next gears range for that speed.

. . . now if you have an extremely light weight drive train, and your revs drop exceptionally fast, then that's a different story.

 

2005 Scion tc MT
Transmission, (FWD)- 2K MILES
TOYOTA
$550
MG Auto Dismantling USA-CA(Wilmington)

Your local salvage yard...as more kids wreck em, more parts will be out there... Hell you can get an engine with 4k on it for $950, and the accident was towards the rear...

 

The more scions on the road the better.. so we can scavenge off of rich kids' totalled tCs i just dont have the heart to try and power-shift my tC tho..

 

There isnt much need to if you can shift quickly enough. Mine barely drops at all between shifts. If you can get to the point of being able to smoothly shift as fast as you can possibly move the shifter then you will do fine without the power shift. Plus, the slight lag in the throttle actually makes this easier on the tC by keeping the rpms up a tad longer when you let off.

 

i've done it a few times w/ no problems except missed once lol

 

Since i installed the S/C i tried power shifting 1st-2nd and its pointless. Wheels just keep spinning. but its fun.

 

^Mine does the same thing. It is fun but horrible on the acceleration. Here I thought they spun so easily because of my Kumhos

 

can someone explain what "double clutching" is?

 

A waste of time unless you are running an un-synchroed tranny or one with destroyed synchros.

Double clutching is pressing the clutch, shifting into neutral, releasing the clutch, pressing it again, shifting into the next gear, then releasing again. I hear some people (particularly fast and the furious fans ) that say it is a good thing.... but it is useless on a synchronized tranny and causes slower upshifts. As mentioned above, if you tear up the synchros you will have to start doing this to shift without grinding.

 

i think the fast and furious guys really meant to say more like a clutch kick more than a double clutch... anyhow that is a lame line (one of many) in that movie

 

The F&F cars had atl east 19 gears (all that shifting in a straight line) anyhow. Who would care about 1 syncro...

 

Don't forget though, repeated hard shifts will inevitable cause synchro destruction. . . and I've seen it happen to a few cars.

Double clutching (primarily on downshifting) is a good way to ensure that you maximize the life of your synchros if you abuse your tranny. But if you drive normally, you don't need to do it. Synchros are designed for everyday wear, tear, and shfits.

 

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