Clutch Master Cylinder Identification

[240 in OZ]

Hello

It looks like I may need to have my clutch master cylinder sleeved and rebuilt. I am trying to ascertain if the unit that is currently installed in my car is correct/original equipment as supplied by the factory or if it has been replaced with an aftermarket unit. I dont want to invest money into having the unit done and find out that it isnt correct.

The car in question is a 1971 240z, Australian (RHD) specification.

Is anyone out there able to post pics or a description of the clutch master cylinder that they have installed in there car if they know it is correct/original equipment for a 71 240z. Im not sure if the LHD and RHD markets varied as to what was factory installed.

I have attached a picture of it. The text on the side visible when standing beside the drivers side front fender says 5/8" and then Japan. I havent been able to ascertain what text, if any, is on the other side as I cannot get my head in there to take a look. I tried sticking the camera in there blindly but the photo didnt work out.

If anyone is able to help me out asap it would be appreciated.

Regards

Joseph

[Zedrally]

Well it looks the same as the one in the 73, never gave it any thought as to OEM or AM ! The mention of 5/8" runs shivers up my back though?

[240 in OZ]

Mike

Thanks for the reply. I think that all master cylinders, both clutch and brake, are in imperial measurements, no matter where they were manufactured.

I have the original Tokico slave and it has an imperial size.

Please take a close look at the arrangement of the line into the cylinder body itself.

See how in mine, if you go from the firewall to the reservoir you come across the line first; others I have seen have the line past the reservoir, going from the firewall.

Joseph

[Zedrally]

Same as mine, I just checked.

[240 in OZ]

Hey Mike

Thanks for doing that. What text does yours have on it, both sides if you are able to see the reverse side.

I wouldnt mind a few more replies on this one so I have a bigger sample to base my decision on.

Thanks

Joseph

[Zedrally]

Would need to hit the engine bay with de-greaser at this time for for in-depth detail!

[260DET]

Your pics look similar to the one off my '71 parts car, it has the outlet in the same place, is marked 'NABCO JAPAN' on the right side and '5/8' on the left side. IIRC Nissan used a couple of different makes of master cylinders, etc.

[240 in OZ]

Richard

Thanks for the reply/info on the clutch master cylinder.

The thing that I am concerned with at the moment with mine is that I cannot find Nabco written on it anywhere.

On the side that is visible from the drivers side fender there is Japan and 5/8" only, no makers name. I am yet to see what is on the other side, but based preliminary investigation appears to be nothing.

Are you saying that in going from the firewall along the cylinder itself you hit the line BEFORE you hit the reservoir?

I have been doing some searching for details and have found this shape master used in Japanese home market cars, but am yet to see it in "export" models.

Would you have a pic of yours?

Thanks

Joseph

[240 in OZ]

Hello Interested readers

I removed the clutch master cylinder on may car and found the makers name on the side that I couldnt read while it was installed on the car. The makers name is Tokico, which matches the slave cylinder, rear wheel cylinders and also the brake master cylinder of my car.

I assume by this that the unit I have is the original/correct unit for my car. I do believe that it may have been removed in the past however as the flare nut on the line was a little rounded where someone has had a go at it with an assumed open end spanner. I removed the line successfully using a flare nut/line spanner.

What is interesting is that the makers name appears to have been ground away; ie if you wernt looking for the word Tokico or Nabco you wouldnt be able to recognise it.

Not sure what to offer re this.

The units (slave and master) are being sleeved and rebuilt this week.

Regards

Joseph

[240 in OZ]

I wanted to bring this one up again. I have received recent information stating that there may have been a recall done early on in production of the 240z of this master cylinder; does anyone know anything about this?

This would explain why I havent seen amny of them.

If this is the case and my car didnt go through the recall program, I am entertaining the thought of contacting Nissan Australia to see if I can get a replacement part.

Any help is appreciated.

Regards

Joseph Gauci