grinding only when shifting 4th to 5th - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

JoHn E · 05-15-2008, 11:01 PM

when I shift from 4th to 5th at 3000 rpm or higher i get this grind i feel thru my short shifter. but if im shifting from 4th to 5th at lower rpms i dont get it at all. it only happens from 4th to 5th. my clutch is all the way in and i am shifting the same way i do thru all of the other gears and its always if im at higher rpms. so ive been having to shift early to 5th to avoid this.

does anybody have an experiences similar to this?

yarou · 05-15-2008, 11:02 PM

syncro probably

s14freak93901 · 05-15-2008, 11:08 PM

friend has the same from shifting from 1st to 2nd and yea, its his syncro.

Blown240sx · 05-15-2008, 11:08 PM

syncro its common

bmx22 · 05-15-2008, 11:19 PM

can trans shops change sycros or re build sr trans in the usa

murda-c · 05-15-2008, 11:22 PM

if you get the parts any good transmission shop can do it.

getting the parts might be a problem unless they have them in common with a usdm tranny.

***dorkidori_s13*** · 05-15-2008, 11:26 PM

get rid of your short shifter...those things are HORRIBLE on your transmission...i had one in my SR tranny for a long time...got to the point where it was grinding EVERY gear...took it out and put my stock shifter back in...all the grinds went away

but its a problem with ur gear sychros...they get old and worn out...outside of rebuilding your tranny...not a whole lot else can be done about it...but get rid of your short shifter before you try ANYTHING else

Jimmy Up · 05-15-2008, 11:29 PM

Old trick to try:

Line up the synchros- throw it 2nd gear at a stop, do it a few times and see if it works for you man

GabeS14 · 05-15-2008, 11:39 PM

rebuilding the Trans isn't cheap..if you are gonna have a shop do it.
prob gonna charge 300 just for labor(minimum..)
if you get the parts they can rebuild it for you..but you wont be able to order through regular shops..
gl with that man.

***dorkidori_s13*** · 05-15-2008, 11:46 PM

theres an old saying...

if u cant find it...grind it

GabeS14 · 05-15-2008, 11:50 PM

Quote:

Originally Posted by dorkidori_s13

theres an old saying...

if u cant find it...grind it

lol..ture....
but hey anyways..I just remember i have a buddy in Los Angeles who has a shop in his backyard...lol..he just did some work on an S15 tranny..I am sure he would be cheaper than going to a tranny shop!
lemme know if you wanna talk to him!

whereda40at · 05-16-2008, 12:22 AM

Quote:

Originally Posted by JoHn E

when I shift from 4th to 5th at 3000 rpm or higher i get this grind i feel thru my short shifter. but if im shifting from 4th to 5th at lower rpms i dont get it at all. it only happens from 4th to 5th. my clutch is all the way in and i am shifting the same way i do thru all of the other gears and its always if im at higher rpms. so ive been having to shift early to 5th to avoid this.

does anybody have an experiences similar to this?

i have an sr tranns that ill sell you that doesnt grind at all that i am selling. let me know.

***dorkidori_s13*** · 05-16-2008, 09:49 AM

its just a gear synchro...its not the end of the world...the transmission isnt going to explode

try switching to a better gear oil (or CHANGE your gear oil if its never been done)...get rid of that disgusting short shift and if it still grinds a bit...oh well...not worth spending 300-400 bux just to fix a slight grind in the tranny

JoHn E · 05-16-2008, 08:17 PM

i bought the car with the short shifter already in

240cracker · 05-16-2008, 08:23 PM

mine does that from 2nd to 3rd...
just run it till it gets bad enough to replace.

like they said cant find it grind it

DudeYourSoOOJDM · 05-16-2008, 09:25 PM

Try bleeding ur clutch slave cylinder also.....

LA_phantom_240 · 05-16-2008, 09:28 PM

Mine grinds from second to third when beating on the poor old KA, and sometimes second to third. I'm gonna change my gear oil when I change my motor (this weekend hopefully)... Last time I changed gear oil, I wanted to shit my pants it was so poor.... oh and I'm on the stock shifter, in all it's loose, jiggly glory.

***CrimsonRockett*** · 05-16-2008, 11:49 PM

Royal Purple or Redline gear oil.

'Nuff said.

I had a grinding issue with my tranny going from 2nd to 3rd anywhere from 3,000 to 5,000 rpms.

Oh, my tranny mount was worn the fuck out too.

Ran royal purple and slapped on a new nismo mount...grinding is gone.

tt99ol · 05-17-2008, 12:34 AM

buy a sequential dog box
you will never have trouble getting it into gear again
but first try some good gear oil with shockproof additive in it
like redline hd gear oil

slider2828 · 05-17-2008, 12:57 AM

I have a BM and used it for 3 years, never had a problem and goes in smooth all the time.... What was the problem with your short shifter? I need an engine torque dampner as it is hard to jump from 1st to 2nd when driving real hard.... but ima boosting 14 psi in top of 1st so eh...

iitywygms · 05-17-2008, 01:27 AM

Quote:

Originally Posted by dorkidori_s13

its just a gear synchro...its not the end of the world...the transmission isnt going to explode

try switching to a better gear oil (or CHANGE your gear oil if its never been done)...get rid of that disgusting short shift and if it still grinds a bit...oh well...not worth spending 300-400 bux just to fix a slight grind in the tranny

How does a short shifter cause a transmission to grind?

tastycakeman · 05-17-2008, 01:30 AM

are synthetic tranny additives good on tranny seals? i used redline gl-4 oil but i also mixed in a bit of royal purple additive. grinds like a bitch into 2nd above 3000.

DohcKA · 05-17-2008, 02:30 AM

i hate short shifters... i love those throws... i guess its cause im use to my 86.. but yea try changing the gear oil it does help in some cases... makes it feel a lot nicer

PhilthyS13 · 05-17-2008, 02:56 AM

I don't think you need to rebuild the transmission. Afaik, the ka and sr transmissions are the same thing - the only difference being the bellhousing, so you could easily find a ka tranny for cheap and swap it using your bellhousing. Much cheaper than a rebuild.

http://www.zilvia.net/f/showthread.php?t=119499

wh0aitznic0 · 05-17-2008, 10:19 AM

I had a grind going from 2nd to 3rd since I bought the car last year. I changed the clutch 2 weeks ago and put new diff fluid and it went away. Even with my B&M shifter. Now how do I get rid of that short shifter rattle ?

flip3d · 05-17-2008, 10:33 AM

get a KA trans and swap the bellhousing. gears might be a little different but its cheaper than rebuilding or getting a new SR trans.

slider2828 · 05-17-2008, 10:35 AM

You can't... I think you should have the 2nd version which rattles less already... Try not to lightly gas when you are at 1500 rpm or something... Its just your engine shaking, at least that is my experience. Also try a heavier weight shift knob... Might help too...
-Ken

Quote:

Originally Posted by wh0aitznic0

I had a grind going from 2nd to 3rd since I bought the car last year. I changed the clutch 2 weeks ago and put new diff fluid and it went away. Even with my B&M shifter. Now how do I get rid of that short shifter rattle ?

INeedNewTires · 05-17-2008, 03:19 PM

i used the shit SPL uses, its NEO synthetic gear oil, worked wonders i highly reccomend it, ESPECIALLY if you've never changed the transmission oil. otherwise who cares a lil grind going to 5th isint a big deal, not like this is a new car dude, just drive it and enjoy it till it explodes, then get a new tranny. Their not more than $250 anyway much less than rebuilding yours. plus their all pretty much the same, SR, KA doesnt matter, swap bellhousings and it bolts up. 5th get is a bit longer on KA but not much.

JoHn E · 05-21-2008, 02:28 PM

i took my car to a shop and got my transmission oil changed just cus i dont know when the last time the previous owner changed it was. it still does that grind from 4 to 5 but i was wondering... if i try using the royalpurple or the redline oil am i gonna get a difference? the oil that the shop used was some dexton III oil

im thinking maybe it would be worth a try?

Entry Speed · 05-21-2008, 06:58 PM

I have the same problem when I go into second and third.

I swapped tranny's, installed an ACT street disc/pressure plate, filled it with new fluids, bled the shit out of it, adjusted the damn pedal and it still does it when its cold (a lot less than the previous trans though).

wtf lol

Its really frustrating, but I guess there is always a risk when installing another used trans.

05-15-2008, 11:01 PM	#1
JoHn E Leaky Injector Join Date: Apr 2007 Location: SOCAL Posts: 114 Trader Rating: (0) Feedback Score: 0 reviews	grinding only when shifting 4th to 5th when I shift from 4th to 5th at 3000 rpm or higher i get this grind i feel thru my short shifter. but if im shifting from 4th to 5th at lower rpms i dont get it at all. it only happens from 4th to 5th. my clutch is all the way in and i am shifting the same way i do thru all of the other gears and its always if im at higher rpms. so ive been having to shift early to 5th to avoid this. does anybody have an experiences similar to this?

05-15-2008, 11:02 PM	#2
yarou Zilvia Addict Join Date: Sep 2006 Location: Bay Area, CA Posts: 661 Trader Rating: (8) Feedback Score: 8 reviews	syncro probably __________________ jumbosandbox.blogspot.com

05-15-2008, 11:08 PM	#4
Blown240sx Leaky Injector Join Date: Feb 2007 Location: Are you stalkin me? Age: 40 Posts: 107 Trader Rating: (0) Feedback Score: 0 reviews	syncro its common __________________ I am the Negative Rep Master

05-15-2008, 11:22 PM	#6
murda-c Post Whore! Join Date: Jan 2007 Location: Montgomery County, MD Age: 36 Posts: 3,198 Trader Rating: (1) Feedback Score: 1 reviews	if you get the parts any good transmission shop can do it. getting the parts might be a problem unless they have them in common with a usdm tranny. __________________

05-15-2008, 11:26 PM	#7
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 43 Posts: 7,496 Trader Rating: (41) Feedback Score: 41 reviews	get rid of your short shifter...those things are HORRIBLE on your transmission...i had one in my SR tranny for a long time...got to the point where it was grinding EVERY gear...took it out and put my stock shifter back in...all the grinds went away but its a problem with ur gear sychros...they get old and worn out...outside of rebuilding your tranny...not a whole lot else can be done about it...but get rid of your short shifter before you try ANYTHING else __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

05-15-2008, 11:08 PM	#3
s14freak93901 Zilvia Member Join Date: Apr 2005 Location: salinas,ca-fort bragg,nc Age: 36 Posts: 203 Trader Rating: (0) Feedback Score: 0 reviews	friend has the same from shifting from 1st to 2nd and yea, its his syncro.

05-15-2008, 11:19 PM	#5
bmx22 Leaky Injector Join Date: Feb 2005 Location: hawaii, Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	can trans shops change sycros or re build sr trans in the usa

05-15-2008, 11:29 PM	#8
Jimmy Up Zilvia.net GB Vendor Join Date: Oct 2006 Location: SoCal {covina} Age: 36 Posts: 4,038 Trader Rating: (52) Rides Gallery: Jimmy Up Feedback Score: 52 reviews	Old trick to try: Line up the synchros- throw it 2nd gear at a stop, do it a few times and see if it works for you man __________________ WWW.JIMMYUP.COM

05-15-2008, 11:39 PM	#9
GabeS14 Post Whore! Join Date: Dec 2005 Location: Sin City Las Vegas Posts: 4,521 Trader Rating: (27) Rides Gallery: GabeS14 Feedback Score: 27 reviews	rebuilding the Trans isn't cheap..if you are gonna have a shop do it. prob gonna charge 300 just for labor(minimum..) if you get the parts they can rebuild it for you..but you wont be able to order through regular shops.. gl with that man. __________________ E92 M3 19" wheels for sale///JWT Cams and Springs +30whp for sale... cheap.

05-15-2008, 11:46 PM	#10
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 43 Posts: 7,496 Trader Rating: (41) Feedback Score: 41 reviews	theres an old saying... if u cant find it...grind it __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

05-16-2008, 09:49 AM	#13
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 43 Posts: 7,496 Trader Rating: (41) Feedback Score: 41 reviews	its just a gear synchro...its not the end of the world...the transmission isnt going to explode try switching to a better gear oil (or CHANGE your gear oil if its never been done)...get rid of that disgusting short shift and if it still grinds a bit...oh well...not worth spending 300-400 bux just to fix a slight grind in the tranny __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

05-16-2008, 08:17 PM	#14
JoHn E Leaky Injector Join Date: Apr 2007 Location: SOCAL Posts: 114 Trader Rating: (0) Feedback Score: 0 reviews	i bought the car with the short shifter already in

05-16-2008, 08:23 PM	#15
240cracker Zilvia FREAK! Join Date: Dec 2007 Location: OC/LA ~ 90631 Posts: 1,485 Trader Rating: (22) Rides Gallery: 240cracker Feedback Score: 22 reviews	mine does that from 2nd to 3rd... just run it till it gets bad enough to replace. like they said cant find it grind it

05-16-2008, 09:25 PM	#16
DudeYourSoOOJDM Zilvia Junkie Join Date: Jan 2003 Location: Palmdale CA Age: 42 Posts: 479 Trader Rating: (0) Feedback Score: 0 reviews	Try bleeding ur clutch slave cylinder also..... __________________ Since 2001.

05-17-2008, 12:34 AM	#19
tt99ol Zilvia Addict Join Date: Jan 2005 Location: quartz hill CA Age: 38 Posts: 644 Trader Rating: (8) Feedback Score: 8 reviews	buy a sequential dog box you will never have trouble getting it into gear again but first try some good gear oil with shockproof additive in it like redline hd gear oil __________________ Need automotive work done in the antelope valley? Ask me how i can help.

05-17-2008, 12:57 AM	#20
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	I have a BM and used it for 3 years, never had a problem and goes in smooth all the time.... What was the problem with your short shifter? I need an engine torque dampner as it is hard to jump from 1st to 2nd when driving real hard.... but ima boosting 14 psi in top of 1st so eh... __________________ Turn and Burn!

05-17-2008, 01:30 AM	#22
tastycakeman Leaky Injector Join Date: Oct 2006 Location: sammamish, WAH Posts: 122 Trader Rating: (0) Feedback Score: 0 reviews	are synthetic tranny additives good on tranny seals? i used redline gl-4 oil but i also mixed in a bit of royal purple additive. grinds like a bitch into 2nd above 3000.

05-17-2008, 02:30 AM	#23
DohcKA BANNED Join Date: Jul 2005 Location: NorCal,East Bay Age: 37 Posts: 508 Trader Rating: (0) Feedback Score: 0 reviews	i hate short shifters... i love those throws... i guess its cause im use to my 86.. but yea try changing the gear oil it does help in some cases... makes it feel a lot nicer

05-17-2008, 02:56 AM	#24
PhilthyS13 Zilvia Junkie Join Date: Jun 2005 Location: N/A Age: 46 Posts: 345 Trader Rating: (4) Feedback Score: 4 reviews	I don't think you need to rebuild the transmission. Afaik, the ka and sr transmissions are the same thing - the only difference being the bellhousing, so you could easily find a ka tranny for cheap and swap it using your bellhousing. Much cheaper than a rebuild. http://www.zilvia.net/f/showthread.php?t=119499 __________________

05-17-2008, 10:33 AM	#26
flip3d Zilvia FREAK! Join Date: Feb 2008 Location: Ft Lauderdale, FL Age: 37 Posts: 1,473 Trader Rating: (1) Feedback Score: 1 reviews	get a KA trans and swap the bellhousing. gears might be a little different but its cheaper than rebuilding or getting a new SR trans.

05-17-2008, 03:19 PM	#28
INeedNewTires Zilvia FREAK! Join Date: May 2003 Location: Austin, TX Posts: 1,527 Trader Rating: (4) Rides Gallery: INeedNewTires Feedback Score: 4 reviews	i used the shit SPL uses, its NEO synthetic gear oil, worked wonders i highly reccomend it, ESPECIALLY if you've never changed the transmission oil. otherwise who cares a lil grind going to 5th isint a big deal, not like this is a new car dude, just drive it and enjoy it till it explodes, then get a new tranny. Their not more than $250 anyway much less than rebuilding yours. plus their all pretty much the same, SR, KA doesnt matter, swap bellhousings and it bolts up. 5th get is a bit longer on KA but not much. __________________

05-21-2008, 02:28 PM	#29
JoHn E Leaky Injector Join Date: Apr 2007 Location: SOCAL Posts: 114 Trader Rating: (0) Feedback Score: 0 reviews	i took my car to a shop and got my transmission oil changed just cus i dont know when the last time the previous owner changed it was. it still does that grind from 4 to 5 but i was wondering... if i try using the royalpurple or the redline oil am i gonna get a difference? the oil that the shop used was some dexton III oil im thinking maybe it would be worth a try?

05-21-2008, 06:58 PM	#30
Entry Speed Leaky Injector Join Date: Aug 2007 Location: Miami Posts: 93 Trader Rating: (0) Feedback Score: 0 reviews	I have the same problem when I go into second and third. I swapped tranny's, installed an ACT street disc/pressure plate, filled it with new fluids, bled the shit out of it, adjusted the damn pedal and it still does it when its cold (a lot less than the previous trans though). wtf lol Its really frustrating, but I guess there is always a risk when installing another used trans.