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Top 2GNT Technical Performance/Engine Manual Trans - NV-T350 topic #8176
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Subject: "2GNT 1st Gear Grinding - Need help fast - Tranny out" This topic is locked.
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TheRedBarrenSep-17-09 03:15 PM
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#8176, "2GNT 1st Gear Grinding - Need help fast - Tranny out"
Sep-17-09 03:16 PM by TheRedBarren



          

As long as I've owned my car, (4 years) 1st gear always grinds. It does not grind when I try to place it in gear from a complete stop. It will only grind and not go into gear while *rolling*. No other gears have problems. What could be the problem?

I've been told syncro's, but wouldn't the gear pop out while in motion? I need help ASAP, because I have the Tranny out doing a SBC Stage 1 clutch install and it would be much easier to replace while its out if it does have to do with something inside the tranny.

-RedBarren
1995 Eclipse RS

  

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RoninEclipse2GSep-17-09 04:59 PM
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#8177, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 0




          

It could be the synchros or a bad shift cable, but usually the shift cable would be noticable in several gears, like 1st-3rd-5th or 2nd-4th-reverse. Considering your description of the symptoms I would lean more toward a dead synchro. It won't cause the gears to pop out while driving but it is usually very annoying. I drove a car with a dead 1st synchro for 50k and it never got any worse

You could have the trans rebuilt, replaced, or just live with it

Erik P.
Official 2GNT thread Hijacker
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TheRedBarrenSep-17-09 05:09 PM
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#8178, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 1




          

Thanks for your reply! Do you think I could just have the shop replace the 1st gear syncro? There is nothing else wrong with the trans besides that. Or do you think it would be worthwile to have aamcro rebuild the whole thing..?

-RedBarren
1995 Eclipse RS

  

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RoninEclipse2GSep-17-09 05:34 PM
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#8179, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 2




          

I'd just go get quotes to see what the difference between rebuilding just the #1 synchro and refreshing the whole setup is. I'd bet that it's not that much more to have the whole thing refreshed.

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

  

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AdministratorStar Turbo TalonSep-19-09 12:49 PM
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#8180, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 3




          

1st gear synchro is bad. when the trans pops out of Gear....your lookign at replacing the actual gears and slider assy.

Out of all the kits i have seen....you will have ot buy an entire synchro kit so you might as well just rebuild the entire trans.

  

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PurposeSep-24-09 11:56 PM
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#8181, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 0


          

You are not supposed to shift into 1st while rolling. It is not a "drive" gear, but functions only to get you going. This driving habit has lead to this result. Gear fluid plays a roll as well.

There is a guy going by Drakito on neons,org that rebuilds mtx's for around $350, and you pay the shipping. Something to consider.

Banned

  

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RoninEclipse2GSep-25-09 12:22 PM
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#8189, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 5




          

Originally posted by Purpose
You are not supposed to shift into 1st while rolling. It is not a "drive" gear, but functions only to get you going. This driving habit has lead to this result.

I've downshifted into first while rolling since I bought the car and I've put over 100k on it personally. First shifts fine. I've even dropped it into first on tight corners and hairpins on the racetrack, no grinds. Shifting into first while the car is moving isn't the issue, usually it's ramming the gears and beating the synchros, or shifting from a rolling reverse into first (intentionally broke a tranny doing that)

Erik P.
Official 2GNT thread Hijacker
Some say that he's driven over more Covenant than he's shot, and that his grenades aren't where you'd expect them to be...
All we know is, He's not The Stig... But he is The Stig's Spartan cousin!

  

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PurposeSep-26-09 06:55 PM
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#8191, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 6


          

How can your transmission be fine if it has been grinding 1st gear since you have owned the car? Are you listening to yourself?

As long as I've owned my car, (4 years) 1st gear always grinds. It does not grind when I try to place it in gear from a complete stop. It will only grind and not go into gear while *rolling*. No other gears have problems. What could be the problem?



I've downshifted into first while rolling since I bought the car and I've put over 100k on it personally. First shifts fine. I've even dropped it into first on tight corners and hairpins on the racetrack, no grinds. Shifting into first while the car is moving isn't the issue, usually it's ramming the gears and beating the synchros, or shifting from a rolling reverse into first (intentionally broke a tranny doing that)


Your lack of driving skill is the problem.

Banned

  

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ModeratorbullettdsmSep-26-09 07:00 PM
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#8192, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 7
Sep-26-09 07:01 PM by bullettdsm

          

Originally posted by Purpose
How can your transmission be fine if it has been grinding 1st gear since you have owned the car? Are you listening to yourself?
As long as I've owned my car, (4 years) 1st gear always grinds. It does not grind when I try to place it in gear from a complete stop. It will only grind and not go into gear while *rolling*. No other gears have problems. What could be the problem?
I've downshifted into first while rolling since I bought the car and I've put over 100k on it personally. First shifts fine. I've even dropped it into first on tight corners and hairpins on the racetrack, no grinds. Shifting into first while the car is moving isn't the issue, usually it's ramming the gears and beating the synchros, or shifting from a rolling reverse into first (intentionally broke a tranny doing that)
Your lack of driving skill is the problem.

Not for nothing Purpose, but you may want to check out quoting skills (or maybe comprehension?)......

Be sure of who you quote.

Captain Caveman

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PurposeSep-26-09 07:17 PM
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#8193, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 8


          

10-4

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AdministratorStar Turbo TalonSep-28-09 11:09 AM
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#8194, "RE: 2GNT 1st Gear Grinding - Need help fast - Tranny out"
In response to Reply # 9




          

Down shifting into 1st gear wen coming to a crawl is normal.

Snychros go bad due to a variety of reasons.

  

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