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Discussion Starter #1
I went to the track last night. First time on a quarter mile track. On the first run I spun a little bit taking off (2.1 60 ft), hit 2nd good, shifted to 5th instead of third, immediately tried to put it back in third, had a grinding noise and it wouldn't go, so I put it in fourth and finished the run. That's the only run I did because since the return road I cannot put the car in first while it is moving. It has to be at a complete stop to avoid making a grinding noise. It shifted fine before that run. All the other gears seem to work properly and once the car is in first it seems to work fine. It just won't go into first gear even as slow as 4 mph.

I still have the stock clutch and am at BPU+. The temp was in the low 50s. Could I have just fried the clutch? Or is the tranny bad? I hope it is the clutch. It is expensive but nothing compared to a new tranny. Please help.

Thanks.


BTW On the bright side I only ran 8.6 @ 83mph in the 1/8th but a 12.9 @ 113mph in the quarter. A 30 mph gain in the last half was cool.
 

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There is a good chance that it's your clutch. Stock clutch is okay for street use in a BPU car but it you drag race it, the stock clutch won't hold for more than few runs.

Try pumping your clutch pedal before putting it into 1st and see if that makes a difference.
 

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Hey Mani I believe I saw your car in a business park. Across from
that Bridgestone dealer, next to the train tracks. Is that you?
I would love to see your car.

94 Supra TT
(No mods yet)
 

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Discussion Starter #5
C'mon guys surely someone on this forum has some mechanical skills. I've been thinking. I don't think a bad clutch can cause grinding noises. A tranny should never grind, other than reverse, unless the syncros are bad. I think I blew out my first gear syncro somehow on my track run. Anyone agree or disagree?
 
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I think that it might be the syncro...it sounds similar to what happened to my 3000gt after some hard racing...It would grind every time I went into gear and eventually it would not go into gear. I hope that you find the problem. Good Luck!
 

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the problem you spoke about is what i am experiencing with my 1st gear. When i bought it i didn't occure until a week later. i tried adjusting the clutch peddle to no avail. so i went ahead and replace the clutch and flywheel with an allum fw and an rps stage 3 clutch. $2K later(got rip off by the mechanic) and i still can't put it in first without slowing the car down to a near stop to avoid the grinds. sometimes it takes several attemps to put it in first( i even put it in second when i get frustrated). the trans is destined to be rebuilt for sure...but until then...no first for the rolls.

gl,
bobby
 

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BigVJZA80 said:
Hey Mani I believe I saw your car in a business park. Across from
that Bridgestone dealer, next to the train tracks. Is that you?
I would love to see your car.

94 Supra TT
(No mods yet)

Yep that is me...
 

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I dont select first unless im stopped anyway.
I wouldnt be suprised if its grinding if your downshifting to first while still rolling , i would say thats normal.

It should go in when your stopped of course.
 

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I will have to respectfully disagree with RZ about first gear. I drive Solo 2 events and there are occasionally times that I need to dowshift to first on a run. I never have a problem getting into first gear while moving but I also heel toe my downshifts which rev matches the flywheel to the clutch and saves the synchros.
Barry H. 94ttsupra 6sp.
 
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If you press the clutch pedal down, and the engine revs freely (ie. no movement in the car), the clutch might be ok. Normally, if the pressure plate broke, you'll have a hard time (or it won't fully) disengaging the clutch from the flywheel, and then you'll grind when you try to shift. But if the clutch is disengaging properly when you depress the clutch pedal, then it's probably something else with the transmission.

In my old Integra GSR, one of the housing bolts broke on my pressure plate, and so I could only shift into the lower gears if I was gentle at low rpm, and wiggled it into gear, but I couldn't go into 1st without slamming. High gears seemed fine.
 
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