|
Scion FR-S / Toyota 86 GT86 General Forum The place to start for the Scion FR-S / Toyota 86 | GT86 |
|
Thread Tools | Search this Thread |
01-29-2014, 08:52 PM | #15 |
Banned
Join Date: Sep 2012
Drives: 2013 Scion FR-S
Location: SoCal
Posts: 885
Thanks: 1,489
Thanked 289 Times in 176 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
|
Thanks @strat61caster and @wheelhaus !
I just got back from some testing, and my conclusion is everything is fine. 4 consecutive chirps from 1->2nd I think the problem is I really have to ROMP on the gas pedal after shifting in order for it to chrip. Otherwise the tires won't chrip or will just kind of "spin" a little bit (kind of sounds like its just pushing gravel/dirt away from the tires) not generating enough chirp. From now on I'll try to be smoother & more gentle with it thanks everybody! EDIT: Also when I missed the shift, I don't think I even let out the clutch or even much at all (in second) and just quickly put it back into neutral. It definitely scared me and it did not sound right (revs rose fast) so I had a really quick reaction. So I think everything should be ok if anything probably just burnt up some of the clutch like stratocaster said. (P.S. I love strats I have 3 and just got a Fender American Deluxe std. ) |
01-29-2014, 09:17 PM | #16 |
Banned
Join Date: Jul 2012
Drives: 2002 BMW 530i, 10 Series FR-S
Location: Puerto Rico
Posts: 3,404
Thanks: 3,416
Thanked 3,334 Times in 1,754 Posts
Mentioned: 60 Post(s)
Tagged: 1 Thread(s)
|
|
01-29-2014, 09:38 PM | #17 | |
Banned
Join Date: Jul 2012
Drives: 2002 BMW 530i, 10 Series FR-S
Location: Puerto Rico
Posts: 3,404
Thanks: 3,416
Thanked 3,334 Times in 1,754 Posts
Mentioned: 60 Post(s)
Tagged: 1 Thread(s)
|
Quote:
[ame]http://youtu.be/RlC1BtsWSng[/ame] |
|
01-29-2014, 09:56 PM | #18 |
Banned
Join Date: Sep 2012
Drives: 2013 Scion FR-S
Location: SoCal
Posts: 885
Thanks: 1,489
Thanked 289 Times in 176 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
|
|
01-29-2014, 10:03 PM | #19 | |
Banned
Join Date: Jul 2012
Drives: 2002 BMW 530i, 10 Series FR-S
Location: Puerto Rico
Posts: 3,404
Thanks: 3,416
Thanked 3,334 Times in 1,754 Posts
Mentioned: 60 Post(s)
Tagged: 1 Thread(s)
|
Quote:
|
|
01-30-2014, 12:07 AM | #20 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,866
Thanks: 28,787
Thanked 31,813 Times in 16,424 Posts
Mentioned: 708 Post(s)
Tagged: 2 Thread(s)
|
|
01-30-2014, 01:05 AM | #22 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,866
Thanks: 28,787
Thanked 31,813 Times in 16,424 Posts
Mentioned: 708 Post(s)
Tagged: 2 Thread(s)
|
|
01-30-2014, 01:12 AM | #23 |
Banned
Join Date: Jul 2012
Drives: 2002 BMW 530i, 10 Series FR-S
Location: Puerto Rico
Posts: 3,404
Thanks: 3,416
Thanked 3,334 Times in 1,754 Posts
Mentioned: 60 Post(s)
Tagged: 1 Thread(s)
|
|
01-30-2014, 01:48 AM | #24 | |
Join Date: Jul 2012
Drives: 2013 BRZ, 2020 KTM Super Duke 1290R
Location: Denver
Posts: 1,788
Thanks: 714
Thanked 1,141 Times in 624 Posts
Mentioned: 49 Post(s)
Tagged: 1 Thread(s)
|
Quote:
The method you're describing causes a chirp when the engine revs drop TOO LOW, and clutch engagement forces sudden engine braking and the revs jump back up ("clutch lock" as you mentioned). This is deceptive because nothing is locking up besides the clutch engagement itself. The tires are NOT locking up as you describe, they're momentarily rotating slower than the car's movement, but they're still rotating. The feeling is a quick jerk as the car wants to slow down from sudden engine braking for a split second. The second way the tires chirp is from applying throttle too aggressively or shifting much faster than the revs would drop. In this case, the engine revs are TOO HIGH and the tires are forced to momentarily spin faster than vehicle speed. The feeling is a quick thump in the backside as the car wants to lurch forward momentarily from a sort-of "launch" between gears. This is what the OP is referring to, and where the confusion came from as you described the sloppy slow shift above. The first is a result of poor technique, while the second is a result of overly aggressive technique. They will both cause excessive stress and wear on the drivetrain due to the sudden spikes in torque. |
|
01-30-2014, 11:20 AM | #25 |
Join Date: Jul 2012
Drives: 2013 BRZ, 2020 KTM Super Duke 1290R
Location: Denver
Posts: 1,788
Thanks: 714
Thanked 1,141 Times in 624 Posts
Mentioned: 49 Post(s)
Tagged: 1 Thread(s)
|
You're saying the tires are still chirping from rotating slower than vehicle speed, even when shifting hard and fast when the engine revs higher than clutch speed?
|
01-30-2014, 03:36 PM | #26 |
Banned
Join Date: Sep 2012
Drives: 2013 Scion FR-S
Location: SoCal
Posts: 885
Thanks: 1,489
Thanked 289 Times in 176 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
|
Thanks everybody I got my answer mods please close
|
|
|
|
|