rb20 transmission going bye bye

[Turboed240sx]

this is what i haverb25 with a rb20 transmission

transmission is grinding almost every gear,faster i go the more harded its to shift gears with the grind

my question is , can i use a ka transmission and just switch bell houseings with my 20 ??

rb25 transmission is wayyyyyy over priced due to the availability

[zismo02]

Check this out: RB20 --> KAhttp://forums.nicoclub.com/zerothread/330418

There's another thread that has one of these guys swapping parts with a 300ZX transmission.It was maybe BooztdZ or RBZ32Guy with a Z32 and a RB26.

[Sil240]

Tony I think this is the thread he's talking about

zerothread?id=192792

[Carl H]

is there gear oil in the box?

[Bluefire]

Check to see if the pressure plate is releasing the clutch plate all the way. it could be a leaky clutch line, bad slave, or bad master cylinder... A transmission thats going out will rarely grind all gears...

-Bluefire

[Turboed240sx]

thanks for the tips guys

also forgot yo mention is that is doesn't happen right away...as i drive more and the transmission warms up i guess thats when the issues i mentioned happen.also i hear like a grind right like under the shifter where the yolk for the d/s is..now i had to get mine cut like 1/2 inch to get the stock ka transmission in it...i have a s14 rear.

[s13_240_rb20]

so supposing my transmission was grinding almost every gear (when dragging or downshifting) ANDDDDD my clutch pedal feels reallllllly soft, what would be the best step to start diagnosing?? I have bled my clutch already and have been losing NO fluid from that system.

--TJ