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I went to one of the slower tracks tonight...

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Old 11-28-2008, 10:54 PM
  #41  
redline06
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so what exactly is wrong with the slave cylinder, whats the reason it makes the padal drop? tonight i launched at about 4500 and that never happened to me , is it a cooling issue fluid or something?
Old 11-29-2008, 07:57 AM
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Screamin350Z04
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I think a 12 second stock slip is possible in a HR car up here in the northeast. Not because our tracks are better but the DA advantage. The power to weight ratio seems about right to me. Its gonna take a solid pass and great conditions but I think its possible. If the slave is up to it is another story. Does keeping the fluid fresh help out at all?
Old 11-29-2008, 08:13 AM
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SOLO-350Z
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I take mine to road courses all the time and autox and never had a problem with my clutch ever! I even had the slave recall done when it first came out just to be safe.
Old 11-29-2008, 10:35 PM
  #44  
VeeTec
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Originally Posted by 3hree5ive0ero
Yeah, after driving so many HR Zs with the same issue and not seeing any definite resolution for the problem, that 12 second pass 100% stock is looking more and more out of reach.
I still think it is within reach, at the right track, during the right conditions.


I popped the cap off of the slave cylinder the other day, and noticed the fluid was down a little. I added fluid, then pumped the clutch for about 30 seconds, before placing the cap back on. I noticed a lot of dark matter coming up in the fluid, didn't look good.

After that, I noticed much improved clutch response, especially during a couple of hard launches. I may try it again at the track, and see what happens.
Old 02-27-2009, 07:49 AM
  #45  
KS0385
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Question about how you launch: You said you drop at 4k RPM. Does that mean you take your foot of the clutch pedal immediately as it reaches 4K rpms, or do you do it gradually? Also do you stomp on the gas right after you release the clutch pedal?
Old 02-27-2009, 09:19 AM
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blktrack350
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Originally Posted by KS0385
Question about how you launch: You said you drop at 4k RPM. Does that mean you take your foot of the clutch pedal immediately as it reaches 4K rpms, or do you do it gradually? Also do you stomp on the gas right after you release the clutch pedal?

no he dosent dump the clutch or else he would just spin. it is a slip of the clutch as you give it more gas.(just what i am thinking he does)
Old 02-27-2009, 10:53 AM
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S8ER95Z
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Originally Posted by blktrack350
no he dosent dump the clutch or else he would just spin. it is a slip of the clutch as you give it more gas.(just what i am thinking he does)
Yeah..the clutch slip is what you want.. my big V8 requires a low rpm slip (2200rpm) but your higher revving engines can use more RPM to get moving better... you just let out on the clutch slowly engaging it and progressively slip the clutch out while giving it more gas. Takes some time to master..

I wish someone had a good video of it in action...
Here is the best example I have ...
http://www.youtube.com/watch?v=EMgeJkCKOTQ



http://rangeracceleration.com/Launch_Tips.html

This has a nice description that has helped me out.

Last edited by S8ER95Z; 02-27-2009 at 10:59 AM.
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