5th to 3rd downshift in s13 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

aqwkmf · 08-16-2002, 09:17 PM

i tried to downshift from 5th to 3rd at ~45 mph....grind. i seen another post about this before. is this a common problem with our cars?

Annoying Eric · 08-16-2002, 09:21 PM

I have a question why were you in 5th gear at 45mph?

*transient* · 08-16-2002, 09:23 PM

I personally like to go through all the gears anyway just because it gives me a better feel of how much of a blip I need to give the gas pedal to match the revs.

aqwkmf · 08-16-2002, 09:34 PM

casual driving
15mph shift to 2nd gear
25mph shift to  3rd gear
35mph shift to 4th gear
45+mph shift to 5th gear (aka overdrive) saves gas by locking the torque converter and lowering rpms
taken from owners manual

my racing choices
2nd shift to 30-35
3rd shift to 50-60
4th shift to ? never redlined 3rd gear yet

i like ur method transient....ill use it.....im more worried about my can than the time

Silviaspeed · 08-16-2002, 11:03 PM

It can be done, you just have to make sure you match the rpm's to the gear.  If you grinded, you weren't revving the engine enough to match the synchros.  I can do it fairly easily, you just need to be familiar with what speed is best for which gear.  For instance coming up to my block i'll be in 4th, as i come up to my block I apply the brake......and once I reach a certain point I shift to second and make the turn.

drift into a curb · 08-17-2002, 11:43 AM

If you're just downshifting, you should be able to get it in to 3 at 45 mph fine.  That'll put you at what 3750-4000rpm?  

Well, if you're double clutching to rev-match, here's a tip:  after clutch and putting it in neutral, push the clutch in and blip the throttle to an estimated rpm at the speed you're driving while slightly pushing your shifter in the gear you want.  When you've rev-matched, the shifter should slide in to the gear easily.  

Dunno if I explained that correctly, it's too early in the morning, so correct me if I missed anything.

ruf · 08-17-2002, 11:53 AM

Even if you revmatch, you may still grind. You need to double-clutch to spin up the idlers in the transmission to the matching speed as well. Rev matching with the clutch in will only match engine RPM, not transmission gears.

whateverjames · 08-17-2002, 12:52 PM

sometimes double clutching won't help my transmission. i have to push in the clutch, take it out of 5th, go to 2nd gear, then 3rd, rev match (to save wear on the clutch) then let out.

aqwkmf · 08-17-2002, 09:43 PM

yea trust me i was't casual downshifting <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt='

'>

tnord · 08-17-2002, 10:51 PM

sheeeet...........i beeyotched that linkage down duece cogs from da figgidy-five yo, and dat's at double 40's. it ain't no thang.

aqwkmf · 08-17-2002, 11:08 PM

hey tnord...do u mind if i steal that phrase for my sig?

tnord · 08-17-2002, 11:18 PM

go ahead........just so long as you give me credit for it, as i see you already have.

DuffMan · 08-17-2002, 11:21 PM

3rd gear is just messed up on our cars. Next time go to 2nd  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>

camppain · 08-18-2002, 02:08 PM

i never had any problems like that on my s13. and i usually go into 5th gear at 39-40 mph no problem

my240likenoother · 08-18-2002, 07:35 PM

i have had no pob there eather
but i always mach up the rmp when downshifting
your sincros could be shot <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>

PabloHoney · 08-19-2002, 02:51 AM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Aug. 16 2002,10:34)</td></tr><tr><td id="QUOTE">casual driving
15mph shift to 2nd gear
25mph shift to 3rd gear
35mph shift to 4th gear
45+mph shift to 5th gear (aka overdrive) saves gas by locking the torque converter and lowering rpms
taken from owners manual</td></tr></table><span id='postcolor'>
Hmmm, the owners manual is dumb if that is a quote from it. If you have 5 speeds, you have a manual obviously, and if you have a manual, I would love to see you lock up your torque converter =) hahahaha, that's damn funny.

HippoSleek · 08-19-2002, 07:11 AM

It helps to guide it from 5-4-3 (clutch in, brake, 5-4-3, clutch out.  I think it's tricky to hit 3rd just right unless you guide it that way.  Doable - but, for me, slower and more likely to get a refusal b/c I'm too close to 1st  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/nervous.gif" border="0" valign="absmiddle" alt=':nervous:'>  or 5th.

08-16-2002, 09:23 PM	#3
transient Premium Member Join Date: Jun 2001 Location: Los Angeles, California Age: 41 Posts: 2,947 Trader Rating: (0) Feedback Score: 0 reviews	I personally like to go through all the gears anyway just because it gives me a better feel of how much of a blip I need to give the gas pedal to match the revs. __________________ Learn everything you can, while you still have the chance.

08-16-2002, 11:03 PM	#5
Silviaspeed Leaky Injector Join Date: Jun 2002 Location: NYC Posts: 80 Trader Rating: (0) Feedback Score: 0 reviews	It can be done, you just have to make sure you match the rpm's to the gear.  If you grinded, you weren't revving the engine enough to match the synchros.  I can do it fairly easily, you just need to be familiar with what speed is best for which gear.  For instance coming up to my block i'll be in 4th, as i come up to my block I apply the brake......and once I reach a certain point I shift to second and make the turn. __________________ www.ImportFanatiX.com -95 240SX -S14 blacktop

08-17-2002, 11:43 AM	#6
drift into a curb Post Whore! Join Date: Mar 2002 Location: Seoul, South Korea Posts: 2,870 Trader Rating: (5) Feedback Score: 5 reviews	If you're just downshifting, you should be able to get it in to 3 at 45 mph fine.  That'll put you at what 3750-4000rpm?   Well, if you're double clutching to rev-match, here's a tip:  after clutch and putting it in neutral, push the clutch in and blip the throttle to an estimated rpm at the speed you're driving while slightly pushing your shifter in the gear you want.  When you've rev-matched, the shifter should slide in to the gear easily.   Dunno if I explained that correctly, it's too early in the morning, so correct me if I missed anything. __________________ Go big or go home!

08-17-2002, 12:52 PM	#8
whateverjames Nissanaholic! Join Date: Jul 2001 Location: St. Louis Age: 45 Posts: 2,263 Trader Rating: (0) Feedback Score: 0 reviews	sometimes double clutching won't help my transmission. i have to push in the clutch, take it out of 5th, go to 2nd gear, then 3rd, rev match (to save wear on the clutch) then let out. __________________ 02 Blazer X - 90 240SX w/SR oh noes

08-17-2002, 09:43 PM	#9
aqwkmf Zilvia Junkie Join Date: Apr 2002 Location: not there. Posts: 414 Trader Rating: (0) Feedback Score: 0 reviews	yea trust me i was't casual downshifting <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cool.gif" border="0" valign="absmiddle" alt=''>

08-16-2002, 09:17 PM	#1
aqwkmf Zilvia Junkie Join Date: Apr 2002 Location: not there. Posts: 414 Trader Rating: (0) Feedback Score: 0 reviews	i tried to downshift from 5th to 3rd at ~45 mph....grind. i seen another post about this before. is this a common problem with our cars?

08-16-2002, 09:21 PM	#2
Annoying Eric Zilvia Addict Join Date: Mar 2002 Location: NYC / Indiana Age: 39 Posts: 831 Trader Rating: (1) Rides Gallery: Annoying Eric Feedback Score: 1 reviews	I have a question why were you in 5th gear at 45mph?

08-16-2002, 09:34 PM	#4
aqwkmf Zilvia Junkie Join Date: Apr 2002 Location: not there. Posts: 414 Trader Rating: (0) Feedback Score: 0 reviews	casual driving 15mph shift to 2nd gear 25mph shift to  3rd gear 35mph shift to 4th gear 45+mph shift to 5th gear (aka overdrive) saves gas by locking the torque converter and lowering rpms taken from owners manual my racing choices 2nd shift to 30-35 3rd shift to 50-60 4th shift to ? never redlined 3rd gear yet i like ur method transient....ill use it.....im more worried about my can than the time

08-17-2002, 11:53 AM	#7
ruf Zilvia FREAK! Join Date: Jul 2002 Location: Reflex Racing, Los Angeles,TX Posts: 1,160 Trader Rating: (0) Feedback Score: 0 reviews	Even if you revmatch, you may still grind. You need to double-clutch to spin up the idlers in the transmission to the matching speed as well. Rev matching with the clutch in will only match engine RPM, not transmission gears.

08-17-2002, 10:51 PM	#10
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	sheeeet...........i beeyotched that linkage down duece cogs from da figgidy-five yo, and dat's at double 40's. it ain't no thang.

08-17-2002, 11:08 PM	#11
aqwkmf Zilvia Junkie Join Date: Apr 2002 Location: not there. Posts: 414 Trader Rating: (0) Feedback Score: 0 reviews	hey tnord...do u mind if i steal that phrase for my sig?

08-17-2002, 11:18 PM	#12
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	go ahead........just so long as you give me credit for it, as i see you already have.

08-17-2002, 11:21 PM	#13
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	3rd gear is just messed up on our cars. Next time go to 2nd  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>

08-18-2002, 02:08 PM	#14
camppain Will never get banned... Join Date: Sep 2001 Location: San Diego CA Age: 45 Posts: 1,510 Trader Rating: (0) Feedback Score: 0 reviews	i never had any problems like that on my s13. and i usually go into 5th gear at 39-40 mph no problem __________________ -=-99 Sentra SE 5 speed-=- -=-95 240 SE 5 speed-=-

08-18-2002, 07:35 PM	#15
my240likenoother Zilvia FREAK! Join Date: Aug 2001 Posts: 1,261 Trader Rating: (0) Feedback Score: 0 reviews	i have had no pob there eather but i always mach up the rmp when downshifting your sincros could be shot <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>

08-19-2002, 02:51 AM	#16
PabloHoney Leaky Injector Join Date: Jul 2002 Location: Sioux City/Ames, IA Age: 43 Posts: 54 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (aqwkmf @ Aug. 16 2002,10:34)</td></tr><tr><td id="QUOTE">casual driving 15mph shift to 2nd gear 25mph shift to 3rd gear 35mph shift to 4th gear 45+mph shift to 5th gear (aka overdrive) saves gas by locking the torque converter and lowering rpms taken from owners manual</td></tr></table><span id='postcolor'> Hmmm, the owners manual is dumb if that is a quote from it. If you have 5 speeds, you have a manual obviously, and if you have a manual, I would love to see you lock up your torque converter =) hahahaha, that's damn funny. __________________ '95 240sx 5 spd LSD Front STB Clutchmasters Stage I 5-lug swap Z32 brakes Z32 wheels 225/50 Yokohama AVS ES100 Whiteline Adjustable Rear Anti-sway bar

08-19-2002, 07:11 AM	#17
HippoSleek Nissanaholic! Join Date: Aug 2001 Location: elsewhere Posts: 2,081 Trader Rating: (0) Feedback Score: 0 reviews	It helps to guide it from 5-4-3 (clutch in, brake, 5-4-3, clutch out.  I think it's tricky to hit 3rd just right unless you guide it that way.  Doable - but, for me, slower and more likely to get a refusal b/c I'm too close to 1st  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/nervous.gif" border="0" valign="absmiddle" alt=':nervous:'>  or 5th.