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MIS-SHIFT am i ok?

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Old 06-05-2006 | 11:55 AM
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dayvei214@mac.com's Avatar
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MIS-SHIFT am i ok?

So i was goin about 75-80 and and had to get past this car. well i downshifted and missed 4th somehow... and wen to second. i reved match for 4th but obviously thats not going to do much when i get into second instead . the clutch was never fully off and i didn't hit the rev limiter... how much damage do you think i did? to tranny, or to engine? I've searched abut all i could find was the 6th and reverse thread.

and another thing... form a say 4th to 2nd downshift? say about 40? is it hard for you to get it in gear kinda like notchy. like you would need a bit of pull to get it in with or without rev matching.

thanks again for the help guys i much appreciate it.
Old 06-05-2006 | 11:57 AM
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should be fine.
Old 06-05-2006 | 12:04 PM
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Haha! I've done that before! I don't think it will be too harmful as long as you don't make a habit out of it. As far as downshifting from 4th to 2nd at around 40mph, I find it a little tough to make this shift too. I try to just take my time, making sure I get it all the way in gear and I let out the clutch easy. I try to avoid shifting into 2nd above 35 mph as much as I can. Can't imagine it's too good for the tranny.
Old 06-05-2006 | 12:06 PM
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Should be OK. Fule cut off at 9500 RPM.
Old 06-05-2006 | 01:47 PM
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The rev limiter wouldn't have done anything anyways when its being mechanically over'reved. I don't think you can do much damage to the engine from overrevving but the tranny definatly doesn't like it... much differen't from a piston engine.
Old 06-05-2006 | 01:59 PM
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What took the beating in this case are the synchros - even if you hadn't let the clutch out at all...

If it's still shifting into 2nd OK, then like Big Mike said, you're prolly OK... Just don't make a habit of it. If it feels "hard" or "notchy" - don't do it - it's definitely not "good."
Old 06-06-2006 | 02:31 AM
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sounds good guys thanks a plenty for the quick help its good to have that reasurance.
Old 06-06-2006 | 03:04 AM
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double clutch!! good for the body. good for the soul.
Old 06-06-2006 | 07:42 AM
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Just a bit of burnt clutch
Old 06-06-2006 | 09:26 AM
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Why would you need to double clutch a synchronized transmission?

I think in my '79 Pinto, first gear wasn't synchronized, but every car I've owned since then all forward gears are....

Altho, that said, I have noticed that at a stop sign (in my 8, not the Pinto <g>), sometimes it's easier (but not necessary) to spin the gears in neutral before shifting into 1st. You have to wait a little bit for them to stop spinning when you put the clutch in, otherwise you get a little "clunk".....
Old 06-06-2006 | 09:37 AM
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Its not necessary but doing it properly along with a proper rev-match will yield longer synchro life. Plus its almost a necessity if you are downshifting more than 1 gear at once.
Old 06-06-2006 | 09:41 AM
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Ah ha. Makes sense...
(shoulda thought about it before posting... <sheepish grin>)
Old 06-06-2006 | 09:45 AM
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the transmission is not made of porcelain. these things happen. Just becareful never to fully **** up and engage the clutch all the way, or else your engine can blow.

4 to 2 is my favorite shift. I have learned it well, once you have mastered it, the twisties will bow to you.
Old 08-10-2010 | 02:23 PM
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Massive thread bump since I had a pretty unsettling occurrence earlier today.

I was driving home from work and decided to redline the **** out of my car like I typically do every day. I was going about 70, and mis-shifted 4th gear, and instead, went into second. The revs went past 10k on the tachometer (lol), and I'm kind of traumatized since I've never mis-shifted to this extent. The event lasted for about a second until I threw it in neutral and had my "aw hell no" face on.

Do I have anything to worry about? Could I have screwed up the synchros? Or the engine?
Old 08-10-2010 | 03:18 PM
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From: Boosted...
Originally Posted by dayvei214@mac.com
So i was goin about 75-80 and and had to get past this car. well i downshifted and missed 4th somehow... and wen to second. i reved match for 4th but obviously thats not going to do much when i get into second instead . the clutch was never fully off and i didn't hit the rev limiter... how much damage do you think i did? to tranny, or to engine? I've searched abut all i could find was the 6th and reverse thread.

and another thing... form a say 4th to 2nd downshift? say about 40? is it hard for you to get it in gear kinda like notchy. like you would need a bit of pull to get it in with or without rev matching.

thanks again for the help guys i much appreciate it.
That breaks supercharger belts. (prior experience)
Old 08-10-2010 | 03:24 PM
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MY clutch died on me cause of that. I still need to take my trans off to see the full extent of damage done.
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