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#1 |
Intake
Join Date: Apr 2010
Location: Tulsa, Ok
Posts: 36
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Very detailed!!! Transmission or Clutch Problem
OK I have a 1994 supra tt 6 speed, I bought it about 3 weeks ago from a toyota dealership. The clutch has just been replaced and the flywheel had been re-machined. My problem is that I will be driving in 1st gear and and 2nd gear when I push the clutch in there is a reasonably loud chatter that you can hear from inside and outside the car even if your standing 10 feet away from the car that happens about three times,( clutch in, chatter, chatter, chatter) then it stops. I also have a problem with when shifting normally into 2nd and 3rd gear it feels like something is hitting it, almost like the clutch isnt down all the way down but theres no grinding just a bump and it goes it to gear. If im driving though and lets say I take it out of first, wait a sec or two, and then put it into 2nd gear the bump is gone. Another thing that happened a few days ago while I was driving I went to put it into 2nd while rolling at a low speed, the gear started to grind, so I moved the stick up but kept it to the left (in between 1st and 2nd) and pulled it down again, it did the same thing and the gears started to grind so I pulled the stick back to the neutral position (between 3rd and 4th) and then pulled the stick to 2nd and it went right in no problem, the thing that didnt make since to me was that my foot had the clutch down to the ground the entire time from the low speed roll to the transmission going into 2nd gear. If anyone could help that would be great! Last edited by pwpanas; 05-12-2010 at 12:51 AM. |
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#2 | |
3" Exhaust
Join Date: Mar 2010
Location: georgia
Posts: 59
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i wonder when they machined the fly wheel if they cut it down too much!? i had a 1g AWD talon a few years back and it happen to me machine shop took to much off the fly wheel and the clutch would chatter and would also grind when trying to put it in gear where thats a DSM & we're talking about a supra not sure if that helps ![]() |
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#3 |
Intake
Join Date: Apr 2010
Location: Tulsa, Ok
Posts: 36
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ok thank you very much, I cant get to a shop that I can trust and that has experience with performance imports for about a week, I just wanted to make sure its nothing to serious because I dont want to mess up my tranny.
I am looking to do the typical bpu upgrades and then if this is the problem, a new flywheel and I know there are a few ups and downs with flywheels, but I would like to get a good, possibly slightly lighter flywheel, but I understand that if its too light there will be chatter, if you have any insight on what would be a good flywheel or should I just go with the trd twin disc set with flywheel, as well as what is the trd clutch set good for hp wise? If any one has any more insight on the possible problem please let me know thank you! |
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#4 | |
3" Exhaust
Join Date: Mar 2010
Location: georgia
Posts: 59
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no problem man, sorry i can't give you any insight on fly wheels my car is a auto. search the forums to see what guys are saying about fly wheels MKIV.com has a bunch of info. |
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#5 | ||
Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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![]() 1) No problem at all - just making sure you and others reading this thread weren't confused on the specs for BPU vs. non-BPU/APU upgrades. 2) Of course - but it's only practical to achieve if you're running an aftermarket ECU (eg. AEM). Trying to accomplish this by adjusting the oem throttle body will be frustrating at best. Trying to do this one change by adjusting the oem ecu isn't practical. Note that this will also negatively impact your mpg's. 3) Are you sure you want to buy a 650rwhp clutch right now? Within "a few years" you could easily wear out a less expensive one. For 400rwhp, a new oem clutch and new oem flywheel will work just fine. For a setup with a bit more holding power and heavier pedal pressure (i.e. slightly less 'comfortable' to drive), use a new oem clutch plate and a new oem flywheel with an aftermarket pressure plate (eg. RPS or ACT). Quote:
2) Based on the additional information you provided, it definitely sounds to me like the clutch pedal needs to be adjusted. 3) Yes, the clutch can simply be adjusted with a 12mm wrench - the nut is on the rod that connects the clutch pedal through the firewall to the clutch master cylinder. You can get to it by laying on the driver's side floor (you'll probably need a flashlight too). Just loosen the locknut and spin the shaft to adjust. Note: the switch on the clutch pedal to the start the car is not affected by adjusting the clutch master cylinder rod length.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 04-29-2010 at 02:58 AM. |
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#6 |
Intake
Join Date: Apr 2010
Location: Tulsa, Ok
Posts: 36
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OK thank you very much for the insight
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#7 |
Intake
Join Date: Apr 2010
Location: Tulsa, Ok
Posts: 36
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Hey so I tried to shorting the clutch rod like you described, I got the nut unscrewed but I could not twist the part behind it, I tried using a 14mm wrench and it wouldnt budge but I didnt wanna keep trying and break it off so I just left it where it was.
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#8 |
Intake
Join Date: Apr 2010
Location: Tulsa, Ok
Posts: 36
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Ok so I have a 1994 supra tt, 100,000 miles on it, I might have to get a new flywheel because the toyota dealership re-machined the stock flywheel to much, so what would your suggestions be on an aftermarket flywheel. I am not looking for drag racing or the lightest flywheel made, because I dont want the chatter or problems with idling, just a good one possibly lighter weight like the rsp flywheel, but if you guys could let me know what you would suggest and why. The car is stock right now but I do look to bpu it this summer, il be looking at around 400 450max hp. Thanks
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#9 | |
Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 04-29-2010 at 02:59 AM. |
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#10 |
![]() Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
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Thread moved to the MKIV section.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. ![]() Tip Jar ---> ![]() |
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Tags |
chatter, clutch, flywheel, horsepower, performance, problem, tranny, transmission |
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