Jump to content
SAU Community

Recommended Posts

Yeah from the slave..after we dropped all the fluid out and put the new master cylinder on. We spent a fair bit of time making sure all the air was out of the system..

Yeah I dont reckon that will work. IIRC the dampener box has a bleeder, but you really want to bleed at the highest point, because that's where the air will be. I replaced my master a while back, but cant remember what i did about bleeding....(but its ok). So first step bleed the box and see if that helps (it should, IIRC it does trap air there).

  • Replies 50
  • Created
  • Last Reply

Top Posters In This Topic

We saw air bubbles come out of the master cylinder, and topped it up 4-5 times (the master cylinder Reservoir )

Where is the dampner box? Still learning all about this and pretty much winging it as I go..

We saw air bubbles come out of the master cylinder, and topped it up 4-5 times (the master cylinder Reservoir )

Where is the dampner box? Still learning all about this and pretty much winging it as I go..

Just follow the hard line from the slave and you cant miss it.

The dampener is a rectagular/square alloy lump bolted to the inside of the driver's side chassis rail. Hard line comes down from the clutch master to it, and hard line runs from it to the clutch slave. There is a long loop of extra hard line involved. It wrecks pedal feel and makes it hard to bleed the clutch.

A bit of judicious bending of the hard line allows you to remove it and connect the clutch hose directly to the hard line from the master. Much better. But do it gently.

Does it necessarily matter where you bleed it from as long as you get all the air out of the system?

So you mean essentially remove the loop within the hard line so there is less distance for the fluid to travel?

The pedal feels exactly the same as it did before I originally blew the slave cylinder. It's a very very heavy pedal, heavier then any other car i've driven.

But after bleeding several times, the feeling returns to as it was originally.

Ok abit more info:

Saturday, put a new master cylinder on. Adjusted the master cylinder inside the cabin (almost all the way, only 1-2mm of thread left) Worked for about 20 minutes of driving, then started doing the same issue. Often won't go into first, or reverse. Start the car in first, with the clutch fully in and the car will crawl forward like it is in gear (despite the clutch being foot to the floor.

System was gravity bled and pump bled for an hour. in total we bled it 3-4 times.

Spoke to a mechanic friend and he says that he had a similar issue and when he pulled his clutch out several of the clutch springs had come loose.

Take it to someone who knows what they are doing. Adjustment sounds like it's incorrect.

You probably can't even push the clutch fork back towards the slave cylinder - that is a clear indication of overadjustment

It was adjusted by my mate who is a mechanic - and then checked by another mate who has experience with Nissan clutches and he looked at the adjustment/felt the free play and said that was all adjusted correctly..

It was adjusted by my mate who is a mechanic - and then checked by another mate who has experience with Nissan clutches and he looked at the adjustment/felt the free play and said that was all adjusted correctly..

So after reading my last comment you checked the slave cylinder pushrod can be pushed back inside the slave?

So after reading my last comment you checked the slave cylinder pushrod can be pushed back inside the slave?

No, that shall be done tonight.

Do I need to push it in manually, or have someone push the clutch inside the cabin and watch it?

If it can't be pushed back in, that means it's over adjusted?

Thanks

No, that shall be done tonight.

Do I need to push it in manually, or have someone push the clutch inside the cabin and watch it?

If it can't be pushed back in, that means it's over adjusted?

Thanks

Yes, push it manually. You are pushing the slave cylinder pushrod back inside the slave cylinder. If it's locked in place or can't be pushed far, it's over adjusted and the master cylinder internal cup seal is blocking the recovery port which means its over adjusted. If you can push it all the way back inside then you have another problem (assuming it's bled correctly - if not bled correctly, it will feel spongy by hand)

Yes, push it manually. You are pushing the slave cylinder pushrod back inside the slave cylinder. If it's locked in place or can't be pushed far, it's over adjusted and the master cylinder internal cup seal is blocking the recovery port which means its over adjusted. If you can push it all the way back inside then you have another problem (assuming it's bled correctly - if not bled correctly, it will feel spongy by hand)

Ok. Shall try that when I get home from work. In the mean time, recommendations on a replacement clutch if I need one?

Ok. Shall try that when I get home from work. In the mean time, recommendations on a replacement clutch if I need one?

I have no idea where on earth you would get that kind of information.

I'm not even sure who around here would know. Maybe the Skyline UK forums might have some info?

Ok i have a question. n my rb25 neo the slave cyl on the side of the box i can push the push rod back into the slave cyl about 20mm. Why is this and would it cause a clutch to fail. f there is anything wrong with it how can i over come this problem. I'm thinking of adding a return spring to push it back in more when i'm off the clutch peddle.

Ok i have a question. n my rb25 neo the slave cyl on the side of the box i can push the push rod back into the slave cyl about 20mm. Why is this and would it cause a clutch to fail. f there is anything wrong with it how can i over come this problem. I'm thinking of adding a return spring to push it back in more when i'm off the clutch peddle.

You don't need to overcome anything. It's not a problem

I have no idea where on earth you would get that kind of information.

I'm not even sure who around here would know. Maybe the Skyline UK forums might have some info?

You? Any of the other clutch experts on here.

Most likely going to get it rebuilt by Jim Berry.

You? Any of the other clutch experts on here.

Most likely going to get it rebuilt by Jim Berry.

No, I was moreso referring to the dozens of threads with every single piece of information necessary to determine which clutch you require. I'm definitely no expert. I just help a mate on weekends

Yeah I have been researching - Hence most likely choosing Jim Berry.

Got under the car last night, could push the slave cydlinder rod in maybe 5cm? at the most.

Mind you, I didn't jack the car up - if I was under the car and able to exert more force it may have been able to be pushed in further.

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



  • Similar Content

  • Latest Posts

    • Per Mark Roberts of Sonictune: Mark Robert Author At this time, no. No ETA either 2016-17 models. You will be able to purchase and install a 2018.5+ TCU though   TCU purchasing and pricing info! As we near the release of TCU tuning, I am going to answer some questions I get asked often.   What do I need for TCU tuning? At this time, you will need a 2018.5+ TCU to be able to tune. If you have a 2016-to early 2018, you will need to replace your TCU with the newer version. One good way to know if your TCU is good is if you have auto upshift in manual mode in 1st gear around 6500 rpms. If your manual 1st gear goes to 7k rpm and will hit the rev limiter unless you shift, you have the older TCU.   Why do I need to buy another ecu license/phone flash if I already have it on my ECU tune? The TCU is its own computer module. It is completely separate from the ECU. Because of this, you will be required to purchase a TCU license and, if your tuner has it, the phone flash license required to tune it via phone/bluetooth.   Do I need TCU tuning? TCU tuning is NOT required. However, the faster your setup, the more it will assist in track and dragy time consistency.   If I’m ECU tuned by (tuner A) can I get my TCU tuned by (Tuner ? Yes, since it’s a different module and a completely separate flash, you can have two different tuners. However, it is highly recommend that you have both tuned by the same tuner. For me, my TCU tuning will directly complement my ECU tuning style and features and running my ECU and another TCU or vice versa MIGHT cause some issues. At this time and for the foreseeable future, I will only be tuning my current ECU tuned customers TCUs.     I have a SYVECS AWD controller. Do I still need it? Yes! The AWD controllers main job is to control your AWD system. However, with TCU tuning, you will no longer need the auto-shift function as that will be done through the TCU. The AWD controller will still be very beneficial for racers looking to maximize traction on the launch.     Shift schedule changes: holding gears longer at lower pedal input as well as max shift rpm changes. Please note, the new ECU race rom coming out will address 90% of the shitty drivability issues these cars have through custom maps from myself and Racebox—as well as others I am sure.   Increase shift speeds: as seen in the videos I’ve been posting, the TCU shifts much faster once tuned.   Increased shift pressures: as also seen in the videos, much firmer full throttle shifts.      
    • Per Mark Roberts of Sonictune:     Mark Robert Author At this time, no. No ETA either 2016-17 models. You will be able to purchase and install a 2018.5+ TCU though   TCU purchasing and pricing info! As we near the release of TCU tuning, I am going to answer some questions I get asked often.   What do I need for TCU tuning? At this time, you will need a 2018.5+ TCU to be able to tune. If you have a 2016-to early 2018, you will need to replace your TCU with the newer version. One good way to know if your TCU is good is if you have auto upshift in manual mode in 1st gear around 6500 rpms. If your manual 1st gear goes to 7k rpm and will hit the rev limiter unless you shift, you have the older TCU.   Why do I need to buy another ecu license/phone flash if I already have it on my ECU tune? The TCU is its own computer module. It is completely separate from the ECU. Because of this, you will be required to purchase a TCU license and, if your tuner has it, the phone flash license required to tune it via phone/bluetooth.   Do I need TCU tuning? TCU tuning is NOT required. However, the faster your setup, the more it will assist in track and dragy time consistency.   If I’m ECU tuned by (tuner A) can I get my TCU tuned by (Tuner ? Yes, since it’s a different module and a completely separate flash, you can have two different tuners. However, it is highly recommend that you have both tuned by the same tuner. For me, my TCU tuning will directly complement my ECU tuning style and features and running my ECU and another TCU or vice versa MIGHT cause some issues. At this time and for the foreseeable future, I will only be tuning my current ECU tuned customers TCUs.     I have a SYVECS AWD controller. Do I still need it? Yes! The AWD controllers main job is to control your AWD system. However, with TCU tuning, you will no longer need the auto-shift function as that will be done through the TCU. The AWD controller will still be very beneficial for racers looking to maximize traction on the launch.     Shift schedule changes: holding gears longer at lower pedal input as well as max shift rpm changes. Please note, the new ECU race rom coming out will address 90% of the shitty drivability issues these cars have through custom maps from myself and Racebox—as well as others I am sure.   Increase shift speeds: as seen in the videos I’ve been posting, the TCU shifts much faster once tuned.   Increased shift pressures: as also seen in the videos, much firmer full throttle shifts.      
    • The fancy pants red shock tower brace is finally incoming from MX5 Mania, getting it shipped from 'Merica has been a long and problematic process, and GWR, the 'Merican supplier will not ship directly to consumers outside of the US, Mania basically had to order a heap of them, the colour choice was silver, or red, and we all know anything red adds 5 killerwasps of dynotorques..... Whilst it does fit over a 2.5, and I've seen a few photos and videos of it being installed and fitting, google also says it might get real close to the FAB9 intake front runner, people in the US says it does fit with the FAB9 intake, except for one person who said it slightly touched.......so there is that.....LOL..... As it seems that I am the first in AU to have this combination of parts there's no local knowledge about fitment, so I'm just a willing guinea pig in this endeavour, I'll cross my fingers and toes and hope for the best In other news, I ordered stuff from China  on the same day I ordered the 23° silicone bend from Victoria, the stuff from China arrived a day ago, the 23° silicone bend is still travelling around Australia thanks to Australia Post, and "may" be here next week
    • Very good news...I contacted Racebox about it last night. My car is a 2016 so remains to be seen if it is compatible, requires a TCU swap, or is impossible.
    • What ECU are you running? This is probably the biggest question. If it's a PowerFC, I'd probably change the ECU and get something newer that will handle the injectors in a nicer way.
×
×
  • Create New...