I've been having a soft clutch pedal problem on my 05 350z and I flushed the clutch line with new dot 4 with little change, and I justed ordered a new slave cylinder. BUT Anyway, I remember last year when I removed the clutch orfice from the clutch hardline I saw that there were 2 loops in my clutch line. I looked up the clutch line on courtesyparts.com and not all 350z's have this type of clutch line. Part number 30650+A

http://www.courtesyparts.com/350z-pa...5_778_782.html

As you can see in the pics, theres a clutch line with loops and another without?

I googled loops in clutch line, and found that manufacturers put loops in brake lines for flexability so they wont get damaged, then I read they are there for cooling, and last I read they are put on clutch lines to dampin vibration/pulsating through the fluid.

Are these ^ correct, if not what is the purpose? The only one that makes sense to me is the damping of the clutch fluid being forced to the slave and back to the MC.

 

And the correct answer is.....
"manufacturers put loops in brake lines for flexibility "

You'd have to do a LOT of clutching to generate much heat in the tubing.

Fluid cannot be compressed, so a short loop of it inside a steel tube isn't going to change anything.

 

^ yep...exactly...

I hate bleeding the Z clutch line........due to that, i did this for non HR models:
https://my350z.com/forum/engine-driv...ghlight=clutch

I know many people, even dealerships that order new slaves when in fact the original wasn't even bad, they just dont know how to flush correctly....

the HR's, since they dont have a "slave" can use the hand siphon style vacumm bleeders from the bottom of the system..
-J

 

how do you wash off old yellow solid fluid craps inside the Motive brake bleeder hose?
i bought a used one and it's full of craps..almost feel ilke i have to replace the hose.

 

ok thanks. I dont want to question your answer, I believe you guys when you say its for flexing. But why do other z's have clutch lines without loops??

I think when i replace my slave cylinder I think i'm just gonna remove the loops by cutting it out, flaring the lines and reconnecting them just for the ease of bleeding, since theres not gonna be a place for the air to hide.