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downshifting with the Evo

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Old Mar 18, 2005 | 03:55 PM
  #31  
Mercenary3's Avatar
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From: Phoenix
Originally Posted by nsnguyen
No, neutral and coasting to a stop is fine. Just be sure to let up on the clutch when you're in neutral.
Yeah. Its bad for the clutch to sit at a stop light with the clutch pedal in ready to go. I always engage right when the light turns yellow for cross traffic.
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Old Mar 18, 2005 | 04:05 PM
  #32  
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From: Phoenix
Originally Posted by feldguy
Oh, and your statement about downshifting into first became highly apparent on rebuild #2 (third tranny setup). The tranny has all new syncros, a new input shaft and two dozen associated parts. It grinds 5th, mostly attributed to the TSB and the Cusco 2 disk, which also makes it har shifting on the car, so I've gotta have extra care. Really, I baby the tranny and the only gear I really snap hard is the 1-2 shift. Its not a drag car, so I dont drive it like one. Feeling the syncros engage is necessary, especially with the problems associated with the 2 disk clutch I can't seem to remedy. Any opinions on that?
Yeah, a 2 disc setup might have a bit to do with it. Remember, youre synchros are matching the speed of the gears inside. When you have 2 discs, youre tranny input shaft is gonna have more momentum for the synchros to deal with. Im not sure what the factor is here, but given the clutch disc acts as a mini-flywheel, its not insignificant. Personally i dont have much experience with them, so its hard for me to comment further.

One thing I will say about downshiftnig when not double clutching....the shifter should just kinda "fall" into place. Its like pushing a bowling ball over a tiny hill. Once the synchros start to engage, it just kinda floats in. If you have to force it all the way, somethings wrong....and take note of those situations...becasue you might want to try D clutching when that situation arises again.

My downshifts are almost NEVER notchy....very smooth and easy... although i feel the notches of synchros engaging on the upshifts frequently.
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Old Mar 18, 2005 | 04:15 PM
  #33  
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From: Golden, CO
Just tried it on the way home from work. Man...I suck at it. I kept having to think about it too much. The part I had the hardest time with was getting the revs to the right spot and letting the clutch back out after the shift into gear. The revs were tough because I'm used to just clutch, blip, shift, clutch-out, so it took longer hence the revs were always a bit low. This made the downshift pretty jerky. I got it right a couple of times.

That leads to my second part, letting the clutch out after the shift. It's just a quick slip back out right? That in combo with the revs made it kind of embarrasing a couple times. But the 1 or 2 times where it kinda worked it was pretty cool It was a 4-3 downshift and it just went right into 3rd, almost on it's own. I'll keep practicing...
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Old Mar 18, 2005 | 07:18 PM
  #34  
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From: Marlboro, MA
if you let the revs drop, you can come with a little gas when you clutch out, or do a really quick shift...in the lower rev range you may be only looking to bump 1000 rpm, so blipping the throttle up 1500 or so should give you enough time to get your mechanics down.
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Old Mar 18, 2005 | 08:00 PM
  #35  
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From: Brooklyn, NY
when im just driving granny style I just downshift like grandma
let the synchros do the work
but when I get spirited on the twisties I double clutch the downshifts
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Old Mar 18, 2005 | 11:23 PM
  #36  
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From: Effort
Originally Posted by Mercenary3
Yeah, a 2 disc setup might have a bit to do with it. Remember, youre synchros are matching the speed of the gears inside. When you have 2 discs, youre tranny input shaft is gonna have more momentum for the synchros to deal with. Im not sure what the factor is here, but given the clutch disc acts as a mini-flywheel, its not insignificant. Personally i dont have much experience with them, so its hard for me to comment further.

One thing I will say about downshiftnig when not double clutching....the shifter should just kinda "fall" into place. Its like pushing a bowling ball over a tiny hill. Once the synchros start to engage, it just kinda floats in. If you have to force it all the way, somethings wrong....and take note of those situations...becasue you might want to try D clutching when that situation arises again.

My downshifts are almost NEVER notchy....very smooth and easy... although i feel the notches of synchros engaging on the upshifts frequently.
Its the only part I baby on the entire car!
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Old Mar 18, 2005 | 11:37 PM
  #37  
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From: San Jose, CA, USA
Originally Posted by qbbraveheart
when im just driving granny style I just downshift like grandma
let the synchros do the work
but when I get spirited on the twisties I double clutch the downshifts
Spirited driving is when you want the fastest downshifts, which you get from not double-clutching. Seems you've got it backwards?
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Old Mar 19, 2005 | 12:00 AM
  #38  
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From: Rockville, MD
Originally Posted by feldguy
Congrats. "Double clutching". It works.
If you have a tractor trailer...fast and furious ruined everything...
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Old Mar 19, 2005 | 09:34 AM
  #39  
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From: Effort
Vroompsh, vin Diesel implied you should be double clutching an d side stepping a clutch while drag racing. Implying all that BS makes us in this arena look like fools. Tractor trailes have trannies sans syncros, so they NEED to. Preventative maintanence is what I regard it is, just because I dont wanna hurt this transmission AGAIN. Too much bad experience whilst beating on it.
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