Not sure if you guys are aware, you can run a hydraulic TOB with these, I'm using a QM unit myself.

 

Yea the decel noise was actually my dp rattling against my works skid plate. The clearance is so tight that it needs to be installed in a certain way. Now I get nothing.


I've noticed the soft cold engagement too. The weather is consistently 30-40 farenheit here. But the softness goes away with a little driving. So all in all pretty good.

Good to know! I might do this the next time my car is apart. I don't particularly like how the rods and stuff for the push-pull conversion fits.

 

Anybody running this clutch having issues holding power in cold weather? My clutch has begun to slip upon acceleration in 4th and 5th gear in the meaty part of the torque curve. Seems to go away after it slips once or twice. I assume the heat that's created when slipping is helping it grab harder. I'm not making that much torque. I also might have a issue with my slave cylinder that could be affecting it. The output rod started squealing when I disengaged the clutch. Put some synthetic grease on the rod and it seems to be fine now. Any thoughts?

 

Aren't carbon clutches known to have a lower coefficient of friction when cold?

 

Ya but I had no idea that cool weather would affect it that much. It's held the power Curt Brown was making, 550ish torque IIRC and he only mentioned it slipping during hard launches. I'm hoping the temps are the case but I'm only talking temps between 30-60 degrees.

 

For the guys who are launching hard, are you doing their prescribed method of pre-warming it before launching?

 

I did. Maybe not enough. Who knows but I definately did the repeated soft half engagement technique to get some heat into it prior to launch. I've only done six drag launches on it.

 

I haven't had any issues holding power in the cold. Its almost 0* F where I live and with 300vtq it doesn't slip in 5th gear. I've never launched on it though.

 

Whereabouts does your clutch engage pedal wise? Have you adjusted the master? Sounds like an adjustment issue.

 

Mine slipped like crazy on the highway when new, had the 2.3 and stock IX turbo(418/438), tq hit so hard down low in 4th and 5th it would just slip, after a while it got better. Never slipped on the JB Red, left it at low boost as it was a borrowed turbo, held 573 wheel on Buschurs dyno. Slipped like mad at the track on BB Black at 30+ psi, ran 12.8@85 with it when launched on WG pressure(24 ish) and rolling it off the line with very gentle shifting it ran 10.8@139 holding perfect. FP BB Green 605/59 dynojet power and held perfect but no track time, did hold top of 4th 9000rpm on highway no issues. Now will try BB Red with it fingers crossed

 

Curt do you know if hydraulic bearing has an effect on pedal pressure? I have this clutch here I am going to install soon. Cant decide on the TOB. I am not really crazy about the idea of having potential clutch ruining fluid leak inside bell housing. I have driven a couple with the exterior conversion type and they seem to work great...

 

Engagement is near the top of the pedal travel. I haven't adjusted the master. I'll be candid and say that I didn't even know I could adjust the master.

 

temperature has a huge affect on carbons ability to grab. just had similar experience with RPS carbon clutch that slipped when cold. grabbed great with some heat it. friction material looked minty when clutch was removed. driver thought clutch was bad since any organic clutch is simply done once it first shows signs of slipping.

my carbon/carbon tilton grabs noticeably harder when hot. my carbonetic twin doesnt seem to change much with heat. at least I dont notice it grab different. drives super smooth all the time. prolly favorite clutch I have used so far.

 

I'm just finding it hard to believe in my case that cool weather in the 40's is gonna make it slip and temps in the 70's and up it won't. Although since I've had the issue we haven't had warm weather to determine if the slipping goes away. We're not talking a huge difference in temps. Not to mention that once I do heat the clutch up it will hold fine but if I haven't shifted in a couple minutes and try to recreate the issue it will slip again. Maybe I just don't understand the nitty gritty science of this disc or I possibly have a separate issue. All in all I still enjoy this setup.

 

They were the same, I just like the internal TOB vs that BS "contraption" set up