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Zosojojo's 86 BRAT: Clutch issues?


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Hello all! My brat has been driving strange for awhile and I would like to fix it. While driving in any gear, The RPM's will shoot up if I open the throttle all the away and the car will not move faster. This can happen in any gear but its the worst in 3rd. I tried to replace the clutch a week ago but it was the wrong size clutch set, so I cleaned the assembly with brake cleaner and slapped it back together. The clutch that was already there didn't look to bad but the inside of the bell housing was covered in black sludge and grease (maybe gear oil). I just want some input on the situation before I separate the engine and tranny again. 

 

Thank you,

Zosojojo

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Usually when i come across a vehicle doing this, either the clutch disc is gone or the pressure plate isnt providing enough clamping force due to some sort of faliure. oil soaked friction material on the clutch disc could cause slippage as well, incorrect clutch pedal/cable freeplay might be a cause too because if the clutch is even slightly disengaged it wont be fully clamping.. you should have a certain amount of free travel before clutch disengagement. do a good inspection of all related parts and decide what needs to be done. maybe someone else can chime in. good luck.

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Now that you mention it. I did start doing this after I adjusted the clutch but I just made it so that the clutch petal and the brake pedal were flush. Maybe all I need to do is wongleflute with it.... thanks guys. Hey turbo nice seein you again!

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Usually when i come across a vehicle doing this, either the clutch disc is gone or the pressure plate isnt providing enough clamping force due to some sort of faliure. oil soaked friction material on the clutch disc could cause slippage as well, incorrect clutch pedal/cable freeplay might be a cause too because if the clutch is even slightly disengaged it wont be fully clamping.. you should have a certain amount of free travel before clutch disengagement. do a good inspection of all related parts and decide what needs to be done. maybe someone else can chime in. good luck.

I have been playing with the clutch adjustments and the issue is more or less the same. When I had the tranny and the engine apart there was considerable amounts of sludge. Is there a seal that has failed?

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Turbosubarubrat has a point also. If the flywheel is under minimum thickness it could cause an issue. Higher mileage vehicles usually have sludge in there. Some transmission cases can be porous and seep gear oil and mix with the clutch dust. As well as the rear main crank seal can go bad and make a mess. But you'd be able to see a leak from that most likely. You'd have to figure out where it is coming from. If the clutch assembly had any type of contamination it should be replaced.

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  • 5 months later...

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