Upgraded Clutch Slave Cylinder Fails Again!

Spooler · 09-23-2015, 02:27 PM

Quote:

Originally Posted by pbs370z

I'm no expert but that's what it looks like to me too Joe. I got some bad advice and only broke in the clutch for about 250 miles before tracking and they were not all city miles - combination of highway and city.

Ouch, that would do it. It looked to me like the clutch disk was not fully broke in yet. I just wasn't sure. I had never seen that before until this post.

Rusty · 09-23-2015, 08:42 PM

Quote:

Originally Posted by Spooler

One question. Were you relying on SRM completely during downshifting/braking zones? If so, you can't because you will do engine braking all the time which is not good for the clutch.

Quote:

Originally Posted by JARblue

Are you asking if he was only engine braking through turns on a track and not using the brakes? That would be ridiculous

Quote:

Originally Posted by Spooler

No, I was asking if he was totally relying on the SRM to REV match for him in the braking zone. You must apply some throttle to limit the amount of engine braking. I noticed an issue at the Dragon when only relying on SRM to rev match.

Quote:

Originally Posted by JARblue

Gotcha!

Makes perfect sense. And yet another reason to practice my spirited driving with SRM off. Although I still have trouble heel-toe in this car with the gas pedal pivot at the floor, and I wind up fat-footing it a lot. Maybe I'll practice some downshifting with SRM on and additional throttle input to minimize the engine braking. Thanks for the tip

Quote:

Originally Posted by Spooler

You can heel-toe with SRM on. SRM will not be affected. With the Z, you will want to use half your foot on the brake pedal and pivot your other half on the go pedal. It's not really heal-toe so to speak.

I use SRM all the time on the track with no issues. All the people who have ridden with me, thought that I heel&toe great.

pbs370z · 09-29-2015, 10:42 AM

Quote:

Originally Posted by pbs370z

I'm no expert but that's what it looks like to me too Joe. I got some bad advice and only broke in the clutch for about 250 miles before tracking and they were not all city miles - combination of highway and city. Not nearly enough break-in apparently. So it does look like it did get too hot in small areas which caused it to fail. Pressure plate plate looks good to me with all fingers evenly matched. Thanks for your diagnosis on these pictures. I'll get back with you. Phil

sent from nowhere significant

Update on my clutch disc:
Joe at Zspeed gave me an RMA for the clutch disc which he didn't really have to do, so you have to give Joe credit and also South Bend for repairing the clutch disk for me. Better than expected customer support. How often does that happen these days?
What can I say except thanks to both of them!

Update: this time I put 1000 miles (city/hiway) on the car before taking it to the track. Went out to the track back in early Nov and so far so good.

sent from nowhere significant

JohnneyC01 · 10-09-2015, 07:50 PM

Its great to know that Joe at Zspeed and Southbend stands by their products and offers help when needed. I just had my Southbend Stage 2 Daily Clutch Kit installed today. Currently in the breaking in stage until I reach about 750 miles. My initial impression: this is how the car should have came from the factory! I no longer have the sinking clutch pedal issue after shifting from normal city driving for 10 minutes.

10-09-2015, 07:50 PM	#49 (permalink)
JohnneyC01 Base Member Join Date: May 2015 Location: Houston Posts: 1 Drives: 09-370z-White-Manual Rep Power: 9	Its great to know that Joe at Zspeed and Southbend stands by their products and offers help when needed. I just had my Southbend Stage 2 Daily Clutch Kit installed today. Currently in the breaking in stage until I reach about 750 miles. My initial impression: this is how the car should have came from the factory! I no longer have the sinking clutch pedal issue after shifting from normal city driving for 10 minutes. pbs370z and Joe@ZSpeed like this. __________________ Stillen Gen 3 Intake - Southbend Clutch - Zspeed CSC

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