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Old 04-27-2010, 05:57 PM
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Doug Nash 4-Speed ?

Hey guy's i have a few questions. About two weeks ago i went to the station to get some gas in the T/A when i left the house i noticed the front of the car quivering alittle i thought it was just trying to clear itself out or the clutch trying to slip, Went to the station to get some gas and when i left and i left normal no getting in it any, Anyway shifted to second the thing just jumped out of gear went back to 2nd nothing went to 3rd nothing So towed it home just got around to pulling the trans can't find anything to the eye wrong with it i can put it in gear with the car off and hit the key and it will bug jump like it is going to start like everything is working, But if i start it up and put it in gear it won't do anything no gears at all. I looked inside the bell-housing can't see anything wrong but i haven't pulled that apart yet. So does anyone know just what can cause this to happen could it be the shaft in the trans or maybe the clutch. I can push the clutch down and can feel the pressure plate working and i can shift it and it feels like it is going into all the gears. Guess i am looking for opinions on what it might be. Could the shaft be broken and work like i said when it's shut off and i turn the key over bug jump and when started feel like it's has gears but won't move? Oh and it didn't make any kind of noise either. But i did notice when i turn the shaft by hand i hear a clicking sound but not real bad or anything. Sorry to ramble on



Cole

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Old 04-27-2010, 06:23 PM
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Clutch disk would be what I would be looking at, either the facing material has shed(had that happen before) or the spline portion of the disk has broken.

If nothing shows there a look inside the trans, putting it in gear with the side cover off and checking the shafts for connection from input to output shaft when in gear. If a shaft has sheared it should be obvious when checked with the cover off, or stripped teeth on the cluster gear or input.

First check would be to run it on jackstands and see if it will power the driveshaft, I have seen exploded rear axle spider gears fool my stepbrother into swapping tranny's, only to find when he got the trans swapped that the car still wouldn't move , He felt a little dumb and embarassed but we just shrugged it off and fixed the rear
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Old 04-27-2010, 06:44 PM
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Thanks Eric, I was thinking the clutch also something don't feel right when i reach in and push on the clutch center it feels loose or something, I will have to finish tearing it down tomorrow and see for sure. I didn't check the rearend with it running but before i tore it down i did spin the wheels and put it i gear and it was holding by me turning them.

Cole
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Old 04-27-2010, 06:58 PM
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Cole,

Does the clutch pedal have less free play than it had before, like the throwout bearing is being pushed back farther?? When I blew all the facing off one side of the disc years ago it was fine until the shift to fourth, when I stepped on the clutch it came back up with almost no free pedal, and no power transfer at all just a little drag, enough to make the car twitch but not move. Pressure plate still felt fine, just the free pedal was gone, pedal set higher at rest than normal because the pressure plate was clamping a now thinner disk, allowing the fingers to retract up farther.

My misfortune happened at the Martin dragstrip here in Mi, I drove the car 75 miles to race, had to find a ride home that night . Got lucky and another guy from my hometown was there racing his Stang, got a ride from him but had to come back the next day and break into the track to retrieve the car with a trailer(Took the far-end gate off the hinges, they told me someone would be there but no one was, so we "improvised" )
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Old 04-27-2010, 07:42 PM
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Yep the free play went away. I just came in for the night started taking the bell-housing off man it's got alot of bolts in it all the way around got about 4 to go what i would give to be in my teens again or even my 20s or 30s or even 40 something man i'm getting old but before i started taking the bell off i felt the disc again and it's moving everywhere side to side up down i think it did come apart, But that's alot cheaper then a trans i will finish taking the bell off tomorrow my son is coming over to eat and i will surprise him get him to help get the rest of them out so i can really see what's going on. Hated to quit for the night but 4:00 AM comes early. Thank's for everything Eric i will let you know how it goes.

Cole
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Old 04-27-2010, 08:08 PM
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Cole, I agree with Eric, but you need to sell the Camaro to me so I can fix it .

Vince
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Old 04-28-2010, 03:20 PM
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Quote:
Originally Posted by 302 Z28
Cole, I agree with Eric, but you need to sell the Camaro to me so I can fix it .

Vince
I would Vince but it would be like losing a family member, Not to mention everyone would probably disown me


Cole
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Old 04-28-2010, 05:57 PM
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Well Eric here's what i found when i finally got it apart, The center came out of the clutch . So now it's been awhile since i have bought a clutch kit so what do you guy's recommend. What's a good brand these day's? I want a good one



Cole
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Old 04-28-2010, 06:34 PM
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Quote:
Originally Posted by eloc431962
Well Eric here's what i found when i finally got it apart, The center came out of the clutch . So now it's been awhile since i have bought a clutch kit so what do you guy's recommend. What's a good brand these day's? I want a good one



Cole
Howdy Cole.

I have had great success with the Centerforce Brand of clutches. If you have changed from the stock gear ratio, you should not have any problems from 'shudder' when taking off in first gear, using their "dual" friction clutch set.
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Old 04-28-2010, 06:45 PM
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Quote:
Originally Posted by carsavvycook
Howdy Cole.

I have had great success with the Centerforce Brand of clutches. If you have changed from the stock gear ratio, you should not have any problems from 'shudder' when taking off in first gear, using their "dual" friction clutch set.
Hey Stephen, How you been i was wondering about the Centerforce clutch. It's been so long since i had to buy one just didn't know which one to go with these day's . Thanks Stephen i will check them out. Oh don't be a stranger



Cole
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Old 04-28-2010, 06:54 PM
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Wow, first time I've seen that happen, what brand of clutch is it??

I've had good luck with the Centerforce Dual Friction also. McLeod also makes some nice stuff. I've had bad luck with Ram.

Make sure you surface the flywheel no matter how good it looks to get a fresh surface, and then sand blast or bead blast this fresh surface to "soften" the micro-peaks on the surface left by the machining process. The blasting recommendation came straight from a Tech at Centerforce, said it would speed the bedding-in process of the new disc and be track ready after only a few short spins around the block. It made sense to me as a machinist, and the three I've done for people this way worked flawlessly.
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Old 04-28-2010, 07:51 PM
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Glad you found it. I had one of those happen to me when I was in high school. I know exactly what causes it .

Vince
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Old 04-29-2010, 07:17 AM
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Quote:
Originally Posted by 302 Z28
Glad you found it. I had one of those happen to me when I was in high school. I know exactly what causes it .

Vince
Honest dad I wasn't running it hard! I don't know what happened. (not when it broke anyway)
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Old 04-29-2010, 03:53 PM
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Quote:
Originally Posted by ericnova72
Wow, first time I've seen that happen, what brand of clutch is it??

I've had good luck with the Centerforce Dual Friction also. McLeod also makes some nice stuff. I've had bad luck with Ram.

Make sure you surface the flywheel no matter how good it looks to get a fresh surface, and then sand blast or bead blast this fresh surface to "soften" the micro-peaks on the surface left by the machining process. The blasting recommendation came straight from a Tech at Centerforce, said it would speed the bedding-in process of the new disc and be track ready after only a few short spins around the block. It made sense to me as a machinist, and the three I've done for people this way worked flawlessly.
I have only seen this happen once myself and like Vince it was years ago have heard a few others that has seen it a time or two. must not happen very often.
I don't know what kind of clutch it is , It don't have any numbers or name stamped in it any where. I guess i am going to call jegs or summit and order the centerforce Dual Friction nobody around here has anything like it just Duralast so far is all i can find And i will get the flywheel resurfaced also like you said Eric. Thank's for everything.

Cole
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Old 04-29-2010, 04:26 PM
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If there is a clutch rebuilder in your area they can construct a super duty clutch for you. Back in the day we used to buy our clutch discs and pressure plates from a local clutch rebuilder. We brutalized our clutches and for the most part held up fine, I can only think of one or two failures.


I still think you need to sell me that Camaro.

Vince
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