noises such as this are never good. 
Broke something.....
Thread Starter
Safety Car
Joined: Jul 2001
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From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Broke something.....
Well the other night I was heading home and ran across a single turbo Supra (T78) that I have seen on my local boards. Long story short I was running through the gears HARD and on the 3-4 something in the driveline went, and went bad.
The Motor is fine (thank god) but it grinds and rattles seriously loud. So loud in fact that at 115 the guy in the supra, under full throttle and two lanes over and 2 cars back could hear it. It almost sounds like something is dragging on the ground but it's not. If I try to put it in gear and I have nothing it just grinds and rattles even more. In Neutral while I was rolling it didn;t grind it just had that dragging sound? My initial thoughts are tranny, or maybe rear diff, but it was so loud and so aluminum sounding, and the noise "seems" to come from the clutch area but I don't know. Whatever it is, it's bad. Clutch feels good still and I'm leaking no more fluid then It ever did before from the rear of the car. Before I take it up to RAFT racing to get it fixed, any idea's?
The Motor is fine (thank god) but it grinds and rattles seriously loud. So loud in fact that at 115 the guy in the supra, under full throttle and two lanes over and 2 cars back could hear it. It almost sounds like something is dragging on the ground but it's not. If I try to put it in gear and I have nothing it just grinds and rattles even more. In Neutral while I was rolling it didn;t grind it just had that dragging sound? My initial thoughts are tranny, or maybe rear diff, but it was so loud and so aluminum sounding, and the noise "seems" to come from the clutch area but I don't know. Whatever it is, it's bad. Clutch feels good still and I'm leaking no more fluid then It ever did before from the rear of the car. Before I take it up to RAFT racing to get it fixed, any idea's?
Melting Slicks
Joined: Jul 2005
Posts: 2,572
Likes: 3
From: Rehoboth MA . . . NRA Life Member
St. Jude Donor '06-'07
With all the racket you mention I suspect you have some mechanical damage somewhere. 
If, while not moving with the engine running, your car sounds pretty near normal, check:
Engine:
Oil pressure
Oil color
Transmission:
Drain transmission and inspect for metal debris. It's possible you lost a shifting fork or a clutch plate. If everything looks good, no extra metal, replace with new fluid and gently see if you have all 6 gears including reverse.
Look at the rear differential in the respect. It's a process of elimination until you determine the cause.
Bob
If, while not moving with the engine running, your car sounds pretty near normal, check:
Engine:
Oil pressure
Oil color
Transmission:
Drain transmission and inspect for metal debris. It's possible you lost a shifting fork or a clutch plate. If everything looks good, no extra metal, replace with new fluid and gently see if you have all 6 gears including reverse.
Look at the rear differential in the respect. It's a process of elimination until you determine the cause.
Bob
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,667
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From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Originally Posted by BobbyG
With all the racket you mention I suspect you have some mechanical damage somewhere.
If, while not moving with the engine running, your car sounds pretty near normal, check:
Engine:
Oil pressure
Oil color
Transmission:
Drain transmission and inspect for metal debris. It's possible you lost a shifting fork or a clutch plate. If everything looks good, no extra metal, replace with new fluid and gently see if you have all 6 gears including reverse.
Look at the rear differential in the respect. It's a process of elimination until you determine the cause.
Bob
If, while not moving with the engine running, your car sounds pretty near normal, check:
Engine:
Oil pressure
Oil color
Transmission:
Drain transmission and inspect for metal debris. It's possible you lost a shifting fork or a clutch plate. If everything looks good, no extra metal, replace with new fluid and gently see if you have all 6 gears including reverse.
Look at the rear differential in the respect. It's a process of elimination until you determine the cause.
Bob
I talked with Danny (Popp) a bit ago and he diagnosed it in about 2 seconds over the phone but he was preparring to get his daughter on track to race and was talking fast so I didn't hear exactly what he said. Something about a gear cone or some crap like that.
Thread Starter
Safety Car
Joined: Jul 2001
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From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Originally Posted by JoeyG
Is there any pools of fluid under the car? Can you push the car if it's in nuetral? In gear?
The car will roll in neutral and in gear, in neutral at a standstill it sounds normal. If I put it in gear as I disengage the clutch the shifter vibrates a TON and it grinds like a teenager with bruxism.
The clutch pedal feels fine, But I swear the sound is from somewhere near the front of the car and not at the rear by the tranny/diff.
Thoughts? I'm gonna stop by Danny's shop tomorrow but I like to go in slightly more educated then I am right now.
Safety Car
Joined: Aug 2000
Posts: 4,537
Likes: 84
From: St. Joseph MO
Cruise-In III Veteran
Cruise-In IV Veteran
Could've possibly snapped the hub in the clutch disc. The more I think about it, thats exactly what mine did when the hub assembly cracked in three spots 
Thread Starter
Safety Car
Joined: Jul 2001
Posts: 3,667
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From: TurtleCreek Twp Ohio
Cruise-In III Veteran
Originally Posted by JoeyG
Could've possibly snapped the hub in the clutch disc. The more I think about it, thats exactly what mine did when the hub assembly cracked in three spots
Hmmm. Well I supose better a Clutch then a tranny
But damn I'm sick of clutches. Done 3 of the bastards in two years!! My own fault I suppose. Kinda pisses me off to the point I'd almost prefer it was a diff or a tranny.......Almost.
Thanks for your help.
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Safety Car
Joined: Aug 2003
Posts: 4,988
Likes: 16
From: Hooterville, NJ
Could be the clutch or Trans I would guess since only going by description and not hearing the noise. Only way to find out is to take it apart and find out exactly what it is. I would recommend that you upgrade to a better clutch than the Spec though if that indeed turns out to be your problem. I have the Cartek stage 7 clutch and its amazing how much abuse the thing takes. Good luck.
Race Director
Joined: May 2000
Posts: 14,542
Likes: 5
Originally Posted by Aquaman
Hmmm. Well I supose better a Clutch then a tranny
But damn I'm sick of clutches. Done 3 of the bastards in two years!! My own fault I suppose. Kinda pisses me off to the point I'd almost prefer it was a diff or a tranny.......Almost.
Thanks for your help.
But damn I'm sick of clutches. Done 3 of the bastards in two years!! My own fault I suppose. Kinda pisses me off to the point I'd almost prefer it was a diff or a tranny.......Almost.
Thanks for your help.
Sounds expensive.
Gee, I'm very sorry to hear that.
Practice, practice, practrice. Keep it up, you'll get there.
Pro
Joined: Nov 2004
Posts: 743
Likes: 1
From: Bartlett IL
Originally Posted by JoeyG
Could've possibly snapped the hub in the clutch disc. The more I think about it, thats exactly what mine did when the hub assembly cracked in three spots
Safety Car
Joined: Sep 2001
Posts: 4,596
Likes: 2
From: Atlanta GA
Sounds like you broke the driveshaft inside of the torque tube.
At least you can check both that and the clutch at the same time. If the driveshaft is not broke, make sure you check the rubber bushings and bearings on the aft of the driveshaft.
At least you can check both that and the clutch at the same time. If the driveshaft is not broke, make sure you check the rubber bushings and bearings on the aft of the driveshaft.
