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Is it just my imagination?

Flying V

By Flying V
in 996 GT3

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Flying V Member

Flying V

Posted
Posted

Earlier today, it was the first time i was really able to test all of the gears of my GT3 after I had changed the final drive of my car.

When I was driving along the freeway, the car had good power and acceleration from 1st to 4th gear. When I got to 5th gear I noticed the power and torque dropped significantly (it wasn't linear) which I thought was just my imagination. Anyway I just continued to drive my car around to test it further and each time I would shift from 4th to 5th I kept on feeling the same drop in torque and power. BUt this is where it gets twisted....each time I would shift from 5th to 6th, it was as if the car was down shifting! At this point I felt the 5th gear was the real 6th gear and the 6th gear was the real 5th gear!!!!

When I talked to a friend, he advised me to run the car constantly at 100kph on 4th, 5th and 6th gears and check the corresponding rpm. The following are the results:

4th - 3,800 rpm

5th - 2,700 rpm

6th - 3,300 rpm!

After doing the tests, right there and then I knew there was really something wrong....

Just to give a brief history on the work done to my car, besides changing the final drive we changed the clutch system and changed some synchronizers and one gear component of the tranny. Basically to change the synchronizers and the gear, they had to dismantle some of the gears. So my question is, is it possible that they messed up the assembly and accidentally mixed up / switched the 5th and 6th gear?

What a weird and frustrating experience!

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  • 3 weeks later...
  • 1 month later...
Flying V Member

Flying V

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Hi V..... What have you found out about your gearing situation?

Hi Guys,

I finally got around to getting my car fixed. Apparently when the mechanic put my tranny back together the first time around, he messed up by putting the 5th gear where the 6th gear is supposed to be and vice versa. Didn't think it was possible... It was a bad experience but what's important my car is running perfectly now and with my new mods in place (final drive, light weight fly wheel and racing clutch) I'm just so glad the worst is over and I'm just looking forward to the miles ahead I will enjoy with my car...!

Cheers!

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