Clutch master cylinder

[slowspeed]

What clutch master cylinder size to use in rb25det tranny swap? RB25DET clutch slave cylinder is 3/4. Can I use the stock 5/8 clutch master cylinder? Or is there an upgrade?

[mtnickel]

When I researched, the Skyline originally had the same size that the 240z had, so Should be able to use stock. I have and It works well.

[slowspeed]

Thanks mtnckel. Do you have a recommendation of brand for a stock clutch master cylinder? I tried napa brand and it didn't last for a year.

[mtnickel]

Thanks mtnckel. Do you have a recommendation of brand for a stock clutch master cylinder? I tried napa brand and it didn't last for a year.

Whats funny is after I posted this I went out to wash my car (it had wood working dust on it) and put it away for the winter on jack stands. Well when going to pull it out, the clutch pedal didn't do anything! How coincidental. I let the engine fully warm and it came back. I think I too got a cheap Rock auto one assuming the stock one had likely sat too long.

Never had one fail this way. it's like the plunger was stuck inwards. I'll have to do some research and let you know. I'll probably get a new one as well.

[slowspeed]

Thats what happen to me too. The Car sat for about 3 months and decided to take it out for a spin. But The clutch pedal had no pressure. I just decide to buy napa brand to get by. Just wanted to drive it. Works fine. Time will tell.