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Reverse gear grinds

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Old Mar 31, 2008 | 02:02 PM
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Question Reverse gear grinds

I'm not sure if this is a problem or this is how it should be.
When I put it in Reverse and the car is slowly moving forward I always grind gears. When the car isn't moving though I can shift into Reverse just fine.
If I do a similar thing and shift into first gear while the car is moving slowly backwards everything works fine and I don't grind gears.
Are you experiencing this?
If it's not supposed to happen on the MT could this be the answer:
http://www.youtube.com/watch?v=yeMwC...eature=related
at 1:00 it says that the MT in the Evo X (I'm not saying it is the same as the MT on the Lancer but it should have the same construction) does not have a dedicated reverse gear.
Tell me what you think and enlighten me
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Old Mar 31, 2008 | 02:06 PM
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Yep, that can happen. It happens in my Civic sometimes...
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Old Mar 31, 2008 | 02:28 PM
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yeaa...same thingg happenss ..
also when i'm sliding down my drive way and try to put it in reverse it grinds
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Old Mar 31, 2008 | 02:35 PM
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must be from overworking the synchros. Like going forward and then in reverse when the car has not come to a complete stop.
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Old Mar 31, 2008 | 02:38 PM
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From: North NJ
So it's not normal then.
Does anyone know if it's because it doesn't have that dedicated reverse gear or is it just a crazy assumption.
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Old Mar 31, 2008 | 03:04 PM
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Originally Posted by MasterAK
So it's not normal then.
Does anyone know if it's because it doesn't have that dedicated reverse gear or is it just a crazy assumption.
Any particular reason that you're abusing your transmission? Stop the car, then change gears (obviously only referring to different directions).
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Old Mar 31, 2008 | 03:16 PM
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^^^When your moving in tight parking spaces it and you want to change directions quickly and many times, I find myself doing that because the normal way is kind of long. I'm not abusing the clutch because the speed is very very small and the wear that the clutch gets because of this is not greater than the extra wear that it gets when there's traffic.
Well at least that's my opinion.
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Old Mar 31, 2008 | 03:32 PM
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I guess I don't feel like "being in a hurry" is a good reason. I'm not standing on a soapbox saying that I've never done it (I have, many times); I'm just saying that you need to be realistic about it.

I'm not talking about the clutch. I said you're abusing your transmission. Those are two different parts. You're damaging the gears inside your transmission (and their little synchros, too). That is bad. Your clutch will be fine.
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Old Mar 31, 2008 | 04:03 PM
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This has happened to me months ago. Seems odd but this problem forced me to stop completely and never do that again no matter if I'm in a hurry. So I don't plan on doing it again and I haven't done a lot of times. However, I was wondering if all the manual transmissions behave that way in this situation or is it just the lancer's transmission which works that way?
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Old Mar 31, 2008 | 05:12 PM
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Originally Posted by MasterAK
This has happened to me months ago. Seems odd but this problem forced me to stop completely and never do that again no matter if I'm in a hurry. So I don't plan on doing it again and I haven't done a lot of times. However, I was wondering if all the manual transmissions behave that way in this situation or is it just the lancer's transmission which works that way?
Many transmissions will have this issue. Some won't. It's just one of those "some do, some don't" issues.
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Old Mar 31, 2008 | 06:37 PM
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A LOT of transmissions will have problems going into reverse if the car is still moving forward. However, most will let your to go into first if the car is slightly rolling backward.

Either way, 99.9% of the time I come to a complete stop before I switch to reverse. Driving an old car that has no syncro on reverse gets you into a good habit to have.
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Old Mar 31, 2008 | 07:39 PM
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the reason is, reverse is not synchronized! All it is, is a sliding "clutch" basically a gear on a shaft that slides in between the main shaft and counter shaft to creat a reverse gearing.

So if you are moving, your countershaft gear is moving too, and unless you clutch out and rev up to the right rpm and then clutch in and shift, or just try to speed shift, you are going to grind.

Just stop and put it in reverse. Bottom line.

I am sure we all have done a little grinding here and there, just not reverse
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Old Mar 31, 2008 | 07:46 PM
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From: North NJ
Thumbs up

^^^^ That seems reasonable, I was just curious about it.

Originally Posted by CamShaft
I am sure we all have done a little grinding here and there, just not reverse
Am I smelling irony here
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Old Apr 1, 2008 | 04:49 AM
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Every manual car I've had has that problem of grinding if your rolling slightly. No way to fix it other than to stop. And our cars have a dedicated reverse gear. I read about the evo x using a combination of gears 1 and 3 to reverse the output shaft...but that kind of puts me off from buying one right now. Def gonna wait to see what kind of problems that posses for all the evo x drivers out there right now.
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Old Apr 1, 2008 | 12:34 PM
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Originally Posted by CamShaft
the reason is, reverse is not synchronized! All it is, is a sliding "clutch" basically a gear on a shaft that slides in between the main shaft and counter shaft to creat a reverse gearing.

So if you are moving, your countershaft gear is moving too, and unless you clutch out and rev up to the right rpm and then clutch in and shift, or just try to speed shift, you are going to grind.

Just stop and put it in reverse. Bottom line.

I am sure we all have done a little grinding here and there, just not reverse
Exactly! same with Honda trans...it's got a reverse gear selector that manually moves a single gear up a pin and connects with CS. I need to try not to be in such a hurry in the morning!

*A pic for reference...

Last edited by SLVROZ_03; Apr 1, 2008 at 12:41 PM.
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