Jump to content
SAU Community

RB20DE NEO smallbox clutch.

Kapr
 Share

Recommended Posts

GTSBoy Grand Master

GTSBoy

Posted
Posted
6 hours ago, Kapr said:

So? Can it be like...bad "install"

Yes, there's quite a few things that can go wrong during a clutch install.

6 hours ago, Kapr said:

or is the clutch wrong ((it should not have been)

Very unlikely. I have a similar clutch. They (ACS) make good gear.

6 hours ago, Kapr said:

Or is this "normal" with new clutch and needs to be break in? 

No, it is not normal. It is possible that you just need to bleed the clutch slave. But the new clutch will also have a more aggressive actuation force/pressure, and so your old slave cylinder might be a bit leaky or otherwise compromised, and not up to the extra force required. Or the master cylinder, same.

  • Thanks 1
Duncan Grand Master

Duncan

Posted
Posted

Or, the height of the release bearing is not correct for your combo.

Start with the bleeding and checking the slave moves throughout its range when you press the pedal (2 person required), but it is possible for the height to be internally wrong too (box back off to measure.

  • Thanks 1
Kapr Collaborator

Kapr

Posted
  • Author
Posted

@GTSBoy iam not a mechanic so what could typically gone wrong? It can help my mechanic...maybe he just forgot something or something like that that could help.

Yeah i thought. I took a LONG time to search for the right one.

Yes i read about all of that and i give him a call about that.
I look at those slave/master cylinders and they are not that expensive so i will be buying them anyway just to be sure.

 

@DuncanYou think it can be short? I double checked if that was a right one(it came with the clutch kit)
Ok i will give him a call. Hope it is some sort of "little error" and not some "yeah the gearbox needs to go out" one

GTSBoy Grand Master

GTSBoy

Posted
Posted
20 minutes ago, Kapr said:

Hope it is some sort of "little error" and not some "yeah the gearbox needs to go out" one

If it's not the hydraulics, it is probably gearbox back out.

20 minutes ago, Kapr said:

so what could typically gone wrong?

Usually as per @Duncan's post, or otherwise associated with not getting the throwout fork positioned correctly. All the way up to catastrophically bolting shit back together without it being aligned properly and wrecking the clutch/input shaft/flywheel/something else.

MBS206 Grand Master

MBS206

Posted
Posted

From memory, on the R33 GTSt at least, while everyone says "It's not adjustable", I found when I changed clutches in mine, it just needed a small adjustment on the rod length. But be very wary here, as you could end up trying to push the pushrod in the master too far, or blowing out the slave.

 

Most likely though, if the master/slave isn't bypassing internally or leaking out, then the throw out is the wrong height compared to the fingers on the clutch, so when it moves to disengage the clutch, it isn't 100% disengaged.
You can check part of this out too by jacking the car up, having the engine running, put your foot on the clutch and try to engage 1st gear. If it goes in pretty easy (Compared to the ground) and/or the wheels start turning a fair bit and it takes a bit too much brake pedal to bring them back to a stop, this is likely the issue. 
I'm not sure if you can adjust the height of the forks etc in these though, it's been that long since I've touched any RB gearbox.

  • Thanks 1
Duncan Grand Master

Duncan

Posted
Posted

yeah first and reverse is where you will find clutch release issues (whether hydraulic or mechanical) because the difference in revs required is the highest there; particularly changing down from 2nd to 1st when still moving.

To be clearer though, it is possible that the clutch release bearing is the wrong height. This is less likely than a hydraulic issue but it is not unheard of when you are mixing and matching

  • Thanks 1
Kapr Collaborator

Kapr

Posted
  • Author
Posted (edited)

For once a good news :) It needed to be adjusted by that one nut and it is ok :) At least something was easy :)
But thank you very much for help.

But a small issue is now(gearbox) that when the car is stationary you can hear "clinking" from gearbox so some of the bearing is 100% not that happy...
It goes away once you push clutch so it is 100% gearbox.

Just if you know...what that bearing could be?
It sounding like "spun bearing" but it is louder.

Edited by Kapr
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
6 hours ago, Kapr said:

Just if you know...what that bearing could be?
It sounding like "spun bearing" but it is louder.

Either the bearing has been installed backwards OR the gearbox input shaft bearing is loosey goosey.

 

When in doubt, just put in a Samsonas in.

Kapr Collaborator

Kapr

Posted
  • Author
Posted

So either way it is gearbox out and look what is wrong? 
I know about the input shaft bearing. Even before swap/new clutch the it sounded exactly like this:

So is that inout shaft bearing or the other was installed backwards? 
And can some please tell me the part number for that input shaft bearing? The gearbox is small box from R34 N/A and number is FS5W71C.

Thank you :) 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • BaronOBeefdip
      Baron's R34 GT-R build thread - car in Japan for 5 years -_-

      By BaronOBeefdip · Posted

      Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Bwagz
      Engine model

      By Bwagz · Posted

      Thanks for that, hadn’t used my brain enough to think about that. 
    • MBS206
      R33 GTR running -9 with no tune

      By MBS206 · Posted

      Also playing with fire if they start to flow more air down low than what the stock twins can. It's not even up top you need to worry, it can be at 3000rpm and part throttle and it's getting way more flow than it should.
    • Piggaz
      Garrett G Series

      By Piggaz · Posted

      Any G40/1000 or G40/1250 results out there?  
    • joshuaho96
      R33 GTR running -9 with no tune

      By joshuaho96 · Posted

      You still want a proper tune on the stock ECU though. Stock tune + stock ECU with GT-SS/-9s is probably playing with fire if you're running more than stock airflow/power.
×
×
  • Create New...