grinding noise

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  #1  
Old 09-29-2009, 05:36 PM
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Default grinding noise

ok guys, would appreciate any input or help.

Got a 91 305 five speed camaro.

Couple of days ago started making a grinding noise shifting gears when it got up to temperature. But if i put my foot on the clutch wait a few seconds itll slip right into gear no problem. I changed the lube in the trans today. Its got a new clutch and kit on it. Hoping its not the trans.

Thanks,

Reggie
 
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Old 09-29-2009, 05:44 PM
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im thinkin maybe slave cyclinder,

clutch fluid???
 
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Old 09-29-2009, 06:17 PM
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If it was a disengagement problem, I wouldn't expect it to shift without crunching at all.
I've had that same problem before, with a high mileage trans. Changing the oil helped, but it still did it. I had to put in heavier gear oil to stop it. The problem was the trans was worn and sloppy inside. After pushing in the clutch pedal, the gears remained free-wheeling longer than they should have. The thicker oil slowed the gears down faster due to the extra resistance. Not saying yours is that way, but it sounds like it.
 
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Old 09-29-2009, 07:23 PM
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thanks man, yea.

I can feel it freewheeling inside for a few seconds after i engage the clutch. what type of oil did you use?
 
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Old 09-29-2009, 09:45 PM
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how much would it be for a rebuild kit, or would it be worth it just to invest in a new one?
 
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Old 09-30-2009, 12:25 AM
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Mine that I was referring to was a different trans that required 10w30 motor oil. So I just put in straight 50 weight. Yours is designed to use Dexron trans fluid. I don't want to try to steer you away from what is recommended. I just know what I would try if the Dexron wasn't keeping the trans from crunching. Getting it rebuilt might be eminent, but might not be necessary yet. I'd have to say that the main reasons Dexron is used is because of it's viscosity stability, it's less apt to foam or aerate, and for less drag giving better fuel economy.
That's not to say that a good grade gear oil won't work. (Lucas is a good gear-climbing oil)
But I would research it more and find out if anybody else has any experience (not just opinions) with not using Dexron in these transmissions.
 

Last edited by Camaro 69; 09-30-2009 at 12:28 AM.
  #7  
Old 09-30-2009, 06:31 PM
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i put some diff fluid in it, and it has helped a lot but i think i have broke a shifting fork or a synchro.

They dont make it easy to rebuild one of these transmissions, has anyone got any advice or have done one before?

Thanks
 
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