grinding only when shifting 4th to 5th

[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?

[yarou]

syncro probably

[s14freak93901]

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

[Blown240sx]

syncro its common

[bmx22]

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

[murda-c]

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]

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

[Mangudai]

Originally Posted by dorkidori_s13

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

No shit? Thats crazy..

[Jimmy Up]

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]

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]

theres an old saying...

if u cant find it...grind it

[GabeS14]

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]

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]

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

[iitywygms]

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?

[JoHn E]

i bought the car with the short shifter already in

[240cracker]

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]

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

[LA_phantom_240]

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]

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]

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

[turbo_dreams]

Originally Posted by tt99ol

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

How much would a sequential dog box cost me?

[JoHn E]

how serious is it right now that they put in DEXRON (ATF?) fluid in my car... should i hold off on driving it until i can find a shop that will put in royal purple gear oil

[dorkidori_s13]

Originally Posted by JoHn E

how serious is it right now that they put in DEXRON (ATF?) fluid in my car... should i hold off on driving it until i can find a shop that will put in royal purple gear oil

if they put ATF in your manual tranny...you shouldnt drive the car at all PERIOD...ATF isnt meant to go in a manual tranny...its a totally different make up than gear oil is

i would recommend you immediately drain your tranny and fill it up with gear oil...drive it around for about 20 min...drain it again to make sure you get ALL the ATF out of it...then fill it back up with either redline gear oil or royal purple

[240drifter1]

Originally Posted by turbo_dreams

How much would a sequential dog box cost me?

More then you can afford, pal.

[dmragecm]

Originally Posted by turbo_dreams

How much would a sequential dog box cost me?

alot ive seen anywhere from 8-10k. not really worth it in my opinion. but as the op stated, im havin the same problem. im considering jsut gettin another tranny and crossin my fingers that its in decent shape. either that or shellin out an extra 1800 or so(not sure) for an oem sr tranny from rhdjapan. or just rebuilding the tranny.

[slider2828]

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...

[tastycakeman]

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]

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]

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