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-   -   boiling clutch fluid? (http://www.clubcobra.com/forums/tech-tips/100082-boiling-clutch-fluid.html)

brettco 10-04-2009 09:26 PM
boiling clutch fluid?
 
I have a Hi-Tech replica thats close to an original and with the original type brake- clutch canisters and when driving around town for long the clutch pedal will go to the floor.I assume the clutch fluid is boiling because if I wait a few minutes It will disengage the clutch again and I head home.The thing that worries me is the brake lines are right there as well. Anyone have any advice-ideas experience in this? Thanks Brett.

MaSnaka 10-04-2009 10:46 PM
Not a Hi-Tech but a Classic Roadster, I noticed after about a 25 mile drive this weekend that my clutch pedal went spongy on me. It took very little foot pressure to push it in and didn't seem like it wanted to return although it did with hesitation. I just had my clutch replaced and the hydraulics worked on and was not very confident I was going to make it home. After a 10-15 minute rest with the hood open it seemed to return to normal and was not a problem the rest of the way home. I have the clutch line sleeved with an insulator but not the brake lines that run right next to it, both just behind the drivers side headers. Do you think it's the result of the clutch fluid boiling? Is that what I'm experiencing? The first time I noticed this condition in 12K miles of driving the car. I'm with Brett on this one.

Thanks, John

PANAVIA 10-05-2009 12:10 AM
Space blanket tube covers , high temp fluid , heat sheilds , wrapp header down pipes - and relocate the reservoirs so they dont pickup the exhaust heat.

I am relocating them on CSX 4985 as the stock location is ludicrous and prone to failure.

Tommy 10-05-2009 05:59 AM
I agree with the above advice. I noticed how close the brake and clutch lines in my car were to the exhaust, so I sleeved the lines with the space blanket style covers and run high temp fluid. Even on the track, I've not had any problems with soft pedals.

brettco 10-11-2009 01:52 PM
So, was this a known problem on the 427 cars with sidepipes then? Thanks Brett.

Clois Harlan 10-12-2009 01:42 PM
I think you may still have air in your lines? I have fought these same issues as you have and in each case it came down to air either in my master cylinder or in my hyd clutch line. Just a thought for you to consider.


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