Question for you Manual Transmission Guys

Earlsfat · #1 04-09-2006, 12:52 PM

M22 - Synchnizers are going (I KNOW this).

Symptom: Shifts fine, everything is GOLDEN, while trans is cold. As soon as it warms up, NASTY, grinding chatter from trans up through the stick, you can hear it as well as feel it.

How far gone are they, can I drive it say 200 miles - 100 miles - 2 miles before they totally go, and THEN... will they just fall to the bottom of the case, or will they probably get caught in the gears and chew up my gears???

(My bro-in-law just bought a 93 "Cobra" - Mustang GT modded into a Cobra

- and wants me to bring Red Death over for a little comparo, and I don't want the transmission to eat itself on the way over.)

skibum1111 · #2 04-09-2006, 01:15 PM

Sounds like you have a bad bearing or 2 in there as well. When they heat up they expand, probably chewing on themselves while you are driving. Personally, I'd wait until the car is done before you go visit the "cobra" so you can beat it down properly.

Earlsfat · #3 04-09-2006, 01:21 PM

So it's the bearings eating themselves not the synchro's, or is it both??

More damage to it if I drive it, or not much of a difference? I really DON'T want to mess anything up that's not going to be fixed in a rebuild (which I'm starting next week) but if it's not gonna hurt to drive it 50 miles or so, I'm gonna. Jonesing for a cruise in RD AND a cheesesteak!

skibum1111 · #4 04-09-2006, 01:26 PM

I had a subaru with bad bearings in the transmission, if I remember correctly it was the output shaft bearings on both sides. Sounded like it was going to puke at any time, especially when turning, but ran for 10k miles like that until some asshole loosened the front wheels and my brother flipped it. I've never seen a transmission case explode before, if its shifting fine you probably won't do any more damage that has been done, just try not to run it really hard when its warm. Worst case is you have to replace shafts if the bearings chew themselves to death, and you will have to tow the car home.

Dyno247365 · #5 04-09-2006, 01:52 PM

M22 what?

Earlsfat · #6 04-09-2006, 02:54 PM

Munice M22 - Rockcrusher - 4 speed transmission. GM stopped making them in '74. M22 was the high performance version 4 speed:

From NastyZ28.Com - http://www.nastyz28.com/faq/trans.htm#m22 (By the way EXCELLENT site for all sorts of info on 2 gen's.)

Q: What is that whining noise coming from my Muncie M22?
A: This noise is normal and has to do with the angle at which the gears mesh. You'll usually hear it in 1st, 2nd, and 3rd gear (but not 4th) after you've accelerated and you then release the gas pedal, letting the engine brake the car. It has almost the same sound in reverse. The M22 gears have a shallower mesh angle which causes the "whine," and the sound is the reason for the popular nickname for this transmission, the "Rockcrusher." The lower angle increases the load carrying capacity of the gears at the expense of the increased noise. The reason for absence of the noise in 4th gear is that 4th is a direct output from the input (1:1 ratio), and there are no significant gears involved.

balls_to_the_wall · #7 04-09-2006, 03:07 PM

/offtopic

My old truck's reverse gear was straightcut so it whined like yours do.... That thing had one HELL of a reverse gear, I could prob have done 40 in revers, I shit you not. I was scared to go that fast in reverse though...

Earlsfat · #8 04-09-2006, 04:15 PM

Quote:

Originally Posted by balls_to_the_wall

I was scared to go that fast in reverse though...

YOU JACKASS!!!! You actually TRIED IT??? HAHAHAHAHAHAHAHAHAAAAA!

That's kinda like that guy that posted about doing a burnout in reverse... lmao!

balls_to_the_wall · #9 04-09-2006, 05:48 PM

Quote:

Originally Posted by Earlsfat

YOU JACKASS!!!! You actually TRIED IT??? HAHAHAHAHAHAHAHAHAAAAA!

That's kinda like that guy that posted about doing a burnout in reverse... lmao!

I have never actually hit 40 in reverse, shit happens WAY to quick going that fast in reverse for me to actually try it. My old truck had character... It was an 82 Dodge 1/2 ton w/ the Slant 6 (225ci) and the 4spd. It was ugly as sin and had dents in it when we got it. Dad originally bought it for an irrigation engine (we live on a farm), but I convinced dad to put the engine and tranny in it for me to drive (first truck). So we put it in, and thats what I learned to drive a manual on. The fastest that thing would go was 81mph downhill (with a tailwind). I was the only one that could start it and keep it running in the winter, it had a Nasty dispostion when it was cold out.

Now it has the bed chopped off, and is up on three stilts w/ the drive shaft sticking out the end hooked up to a well in the middle of a corn field. It looks funny as hell, but it gets the job done, and was easier than pulling the engine back out and fabricating a stand for it.

But back to the reverse gear statement. You ever tried reverse in a big gravel area with nothing around in the middle of nowhere in a truck you don't care about?? Its fun.

*edit* Your also talking to the guy whos father showed him how to do a perfect donught...

Earlsfat · #10 04-10-2006, 08:46 AM

LMAO!

Not too many wide open spaces around here where you can do that, BUT... in high school I used to drive an 87 Cavalier Wagon that on the last day senior year did a reverse to about 30 - 180 - drive off into the sunset in one of the grass overflow parking lots on campus.

Pretty cool until I almost hit a parked car that was like 100 yards away when I started.

I like them old trucks.

92zcamaroperson · #11 04-10-2006, 08:58 AM

They had police in the parking lot on my last day of school so I really couldnt do anything....poo heads...

balls_to_the_wall · #12 04-10-2006, 05:00 PM

Quote:

Originally Posted by 92zcamaroperson

They had police in the parking lot on my last day of school so I really couldnt do anything....poo heads...

The last day of school one of my best friends out ran the cops on his 660 Raptor 4-wheeler.... The cop chased him all through town, never did catch him. That was in interesting day to say the least...

Rally Sport · #13 04-10-2006, 05:31 PM

93 Cobra huh.. so its a GT that was made to look like one or an actual Cobra? I saw one in a Ford dealership a while back, it was nice, red and shiny as hell.. I wanted it.

Earlsfat · #14 04-10-2006, 07:53 PM

Quote:

Originally Posted by balls_to_the_wall

The last day of school one of my best friends out ran the cops on his 660 Raptor 4-wheeler.... The cop chased him all through town, never did catch him. That was in interesting day to say the least...

heh.. that's awesome.

Those things FLY when they're set up right. Seen one racing a bike in Philly (short run though) .... didn't lose too badly! Made a bunch of the car guys think twice about putting money up.

KPot2004 · #15 04-10-2006, 08:10 PM

when are we going to see some new pics of red death???

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