What difference in TO bearing (25)

[xjon]

For RB25det, I am hearing there is a difference in throwout bearing between the stock RB and the NA 300zx. I am comparing the two and there doesn't seem to be any difference in the size.

I hear that you need to get the 300zxtt throw out bearing. Any truth to that?

http://www.imagestation.com/al...dx=30

[S13Sil-line]

I just replaced my TO bearing when I put my clutch in. I used a 300zx TT TO bearing and it matched up perfect. There is a piece the needs to be pressed in the bearing but I'm not sure if the NA bearing will let it fit.

[FAST-DATSUN]

the Sleeves are different lenght, Nissan makes 6 different lenghts to work with the same TO bearing...

[xjon]

So can I use the NA 300zx TO bearing or do I need to get a 300zxtt one?

[goofynick6]

TTT, I have the na 300zx bearing and when I slid it onto the input shaft of the trans, it was extremely loose, as in, 1/4" all the way around the inside of it....is there something I'm missing?

Nick

[xjon]

I am using the TO bearing from the clutch kit I got which was for the 300zx NA. Working fine so far.

[goofynick6]

Is there some kind of sleeve or insert for the middle of the bearing?

[accel junky]

No sleeve. Just put it on with the rotating ring facing towards the pressure plate. That ring makes the contact with the pressure plate.

[goofynick6]

That's weird, I've just never seen a t.o. bearing that is that oversized. It's like putting a thumb ring on your pinky.

Nick

[FAST-DATSUN]

There is a SLEEVE that the bearing fit on........

[goofynick6]

Doh! I don't have mine...I don't remember having it either...doubt anyone sells them at autoparts stores?

[xjon]

I didn't have to use a sleeve. Check out the pics I have comparing the two side by side at http://www.imagestation.com/members/jabello

[goofynick6]

You have the sleeve there in the picture though...you're saying you didn't use it? Does the RB20 have a smaller input than the rb25 I'd assume?

Here is one sold for an S13 KA24DE,

http://catalog.nissanpartswhol....y=21

"Release bearing holder" I wonder if a KA sleeve would work or if a Z32 would...hmm..

Nick

[accel junky]

Talking about the release bearing holder? Of course you use that from the RB. Slide the 300zx TOB onto that witht the rotating ring facing towards the pressure plate.

[goofynick6]

yeah..I threw mine out with the bearing...my last car didn't need one so I wasn't aware of it.

I'm going to napa now to see if a stock 240 one will work..

Nick

[accel junky]

Stock 240 one is longer. May work, but I would be afraid of premature contact with the pressure plate due to its extra length, not to mention I have no idea if the sleeve diameter is the same as the RB one.

good luck man, post something if you find a solid answer.

-Daniel

[goofynick6]

Well, I got the 240 bearing, and it fits perfect on the shaft, but I don't know about the length because I don't have one to compare to...can someone measure theirs?

Nick