Upgraded Clutch Slave Cylinder Fails Again!

Spooler · 09-07-2015, 09:05 PM

What kind of fluid did you use is the big question. Dot 3 brake fluid is not going to cut it. Bleed it again with Motul 600,
It appears you overheated the fluid and caused it to boil.

ban25 · 09-07-2015, 10:34 PM

Quote:

Originally Posted by Spooler

What kind of fluid did you use is the big question. Dot 3 brake fluid is not going to cut it. Bleed it again with Motul 600,
It appears you overheated the fluid and caused it to boil.

Seconded. It's much more likely you boiled the fluid, especially after 30 minute track sessions. You should flush your clutch (and brakes) with Motul RBF 600, or if you're like me and never want to deal with a dead clutch pedal again, Castrol SRF.

pbs370z · 09-08-2015, 10:58 AM

Quote:

Originally Posted by ban25

Seconded. It's much more likely you boiled the fluid, especially after 30 minute track sessions. You should flush your clutch (and brakes) with Motul RBF 600, or if you're like me and never want to deal with a dead clutch pedal again, Castrol SRF.

30 min total. 10 minute track sessions.

ban25 · 09-08-2015, 11:25 AM

Quote:

Originally Posted by pbs370z

30 min total. 10 minute track sessions.

Doesn't sound like much, but then again, I've boiled my clutch fluid after one lap (2 minutes). When the pedal drops to the floor, you can lift it up with your toe and pump repeatedly to get it back. However, once this has happened, you need to flush the fluid. Motul RBF600 should last 2-3 track days, while reports are Castrol SRF might last half a season or more (I'll be trying it out at Willow Springs in two weeks).

pbs370z · 09-08-2015, 10:57 AM

Quote:

Originally Posted by Spooler

What kind of fluid did you use is the big question. Dot 3 brake fluid is not going to cut it. Bleed it again with Motul 600,
It appears you overheated the fluid and caused it to boil.

Correction: The kit came with the Motul (Dot 5.1) which was used in the install.

ban25 · 09-08-2015, 11:10 AM

Quote:

Originally Posted by pbs370z

The kit came with the Motul 600 (Dot 5.1) which was used in the install.

Motul RBF 600 or Motul DOT 5.1? They're different products, you want RBF 600.

pbs370z · 09-08-2015, 12:45 PM

Quote:

Originally Posted by ban25

Motul RBF 600 or Motul DOT 5.1? They're different products, you want RBF 600.

Oops! My bad. Its the Motul Dot 5.1.

Everyone: thanks for all your thoughts on this!

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09-07-2015, 09:05 PM	#1 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,109 Drives: 2013 Nismo 370z Rep Power: 2684394	What kind of fluid did you use is the big question. Dot 3 brake fluid is not going to cut it. Bleed it again with Motul 600, It appears you overheated the fluid and caused it to boil.