Ok, background: 1997 240sx SE, RB25DET engine, RB20DET transmission. internally identical to the KA24E/DE transmissions found in all stock 240sx's.

Problem: after car warms up, there is a slight vibration/grinding noise comming after a shift over 2500RPM, only on an upshift (1-2, 2-3 etc) it downshifts without a problem even @ high rpm downshifts and into first while moving. the first thing you would think is syncros right? well this sound happens as i shift into gear and continues for a good couple seconds after i have already engaged the gear inside the tranny. my foot can be completley off the clutch then the sound will slowly let up. i have replaced the slave cylinder, adjusted the pedal till my fingers have gone numb and done everything else i can think of short of pulling the transmission and flushing the tranny (next.)

the sound: the best i can describe it is like cordory pants rubbing together, but a deeper tone.

when i swapped, i did a new clutch, resurfaced flywheel, new TOB.

i am completley stumped about this and am comming here as a last resort, there are some brilliant transmission experts on HT i hope someone has an idea.

im sure i left out something, just ask and ill answer

 

forum...moves...too...fast

 

this is a stretch but, I used to own a maxima... if the tranny is anything like the ones found on maximas. you want to use gl-4 rated tranny fluid. if gl-5 is used it can cause shifting problems. id say check that out first.

 

hahaha i was just talking about that with some fellow 240 owners, when i flush it GL4 is going back in. just gotta find the time to do it.

that seems like a stretch to me, but its possible.

 

bump

 

so i guess everyone else has no idea eithre, eh?

 

 

i have never dealt with a Nissan tranny
i am shure most of the others on this forum have the same problem

i really wish i could help you, i hate when i come across a thread that i know nothing about

i would try a Nissan forum, it may be of more assistance

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kamin &raquo;</TD></TR><TR><TD CLASS="quote">Ok, background: 1997 240sx SE, RB25DET engine, RB20DET transmission. internally identical to the KA24E/DE transmissions found in all stock 240sx's.
</TD></TR></TABLE>

[in my best hillbilly voice]

so, is that like..................one of them forEEEEEEgn cars?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dirtyd463 &raquo;</TD></TR><TR><TD CLASS="quote">i have never dealt with a Nissan tranny
i am shure most of the others on this forum have the same problem

i really wish i could help you, i hate when i come across a thread that i know nothing about

i would try a Nissan forum, it may be of more assistance</TD></TR></TABLE>

ive tried nissan forums, none of them have any idea eithre.