| Author | Message | ||
| Henryk (Henryk)
Member Username: Henryk Post Number: 780 Registered: 8-2001 |
Tim: From what I understand, that should not be a problem. That is, because the carbon clutch can be made to slip more while engaging, without causing ANY damage, supposedly....this would minimize the shock. My concern would be the lack of low end torque, due to less inertia. Would this be a big concern? | ||
| Tim N (Timn88)
Advanced Member Username: Timn88 Post Number: 3142 Registered: 6-2001 |
I dont think its the feeling of increased power that will hurt the tranny, but rather the increased "shock" that the driveline will take from a grippier clutch. Its sort of the same reason why slicks put alot more load on a tranny, instead of the tires slipping which decreases the load on the tranny, the tranny now has to deal with that. | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 650 Registered: 11-2002 |
Yes, you'll love it. I'm assuming you don't commute in LA, Chi-town, or NY traffic though. You just hesitate at the point of initial slip a bit longer. | ||
| Henryk (Henryk)
Member Username: Henryk Post Number: 779 Registered: 8-2001 |
Frank: Adding 20 Hp shouldn't really stress the transaxle, considering other people have turboed their TR's to over 800HP. Rob: Are they right when they state that the learning curve is not that bad, and that the car should be fine for the street? | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 649 Registered: 11-2002 |
That's what Tilton did for me on the F40 application, worked awesome. Really made a big difference. This was race-only, but I did street it a few times. | ||
| Frank Parker (Parkerfe)
Intermediate Member Username: Parkerfe Post Number: 2351 Registered: 9-2001 |
Be careful. I have heard that with a stronger clutch that you risk damaging the fragile Boxer transaxle. I would rather replace a clutch than a transaxle. | ||
| Jens Haller (Jh280774)
Member Username: Jh280774 Post Number: 756 Registered: 9-2001 |
Henryk, Sorry for the stupid question! Saw that it was already answered! Must be the heat here in Germany. Con saluti cordialissimi, Jens Haller | ||
| Jens Haller (Jh280774)
Member Username: Jh280774 Post Number: 755 Registered: 9-2001 |
Henryk, How much is such a carbon/carbon clutch if you don�t mind asking! Just curious since I installed a new stock clutch with new flywheel in my 348tb two years ago. Still remember the horror when I heard the price and the statement that "these clutches can last up to 40000km if you treat it right" (Oh man, good to hear!  ) Con saluti cordialissimi, Jens Haller | ||
| Henryk (Henryk)
Member Username: Henryk Post Number: 778 Registered: 8-2001 |
To make a long story short: 1) NEVER reline a used set of clutch discs.....porbably springs are sprung and metal is warped. 2) Buy the stock Ferrari clutch package, or; 3) Have carbon/carbon clutch, with flywheel made for the car. Tilton does not make sprung hubs with their carbon clutches......feels they aren't necessary. Recommended clutch for the Boxer would be a 3 disc (7 1/2 inch) clutch unit, and a custom flywheel. The 2 disc would not last that long......carbon is still softer than regular disc material. All this for ONLY $5,000, give or take. They need the old parts to measure, if a 3 disc clutch can be made for this car. If not, then I should go with the stock......2 disc carbon clutch just won't last long. They have not done a Boxer before.....that is the reason for sending them the parts. There is a small learning curve with the new clutch.......but not as bad as some make it out. Advantages: Less sprung weight.....less inertia.....equals about 20 HP more, with a very free revving engine. Rebuilding the clutch, when necessary, will cost about $300 complete. If an offer, on a building I have for sale, goes through, then this will be a treat for me.......why not?????????? | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1676 Registered: 11-2002 |
>>Ask Tilton if they will do a sprung hub to absorb shock of starting. I know Clutch Masters is doing carbon with sprung hubs for the street.<< I just posted my references to this on FTalk, but I'll repeat it here because it's relivant. The biggest complaint I have, and I've had from clients with these CF clutches is that they are too grabby and chattery. Which makes them very hard to use and master in slow traffic and/or traffic jams. You know this well Rob because you bring it up...many of these types Upgrades require "Compromise". The clutch last virtually forever, but they are a ••••• in slow traffic on the street. I suggested in my other post that I like these clutches, however they have not progressed and been developed enough "YET" to make them the final clutch solution. I suspect as we move into the future this will change and these clutches will become fully sorted and find a common home in street cars. I just don't think they/we're quite there yet. | ||
| Rob Schermerhorn (Rexrcr)
Member Username: Rexrcr Post Number: 642 Registered: 11-2002 |
Let Tilton know you're street driving, not racing, they may change their recommendation. As in Chris's F40 clutch thread, getting the mass of the car moving with an ultra-light clutch/flywheel is more difficult. More than likely, you'll learn the new technique and enjoy the increased rate of acceleration of the engine. Ask Tilton if they will do a sprung hub to absorb shock of starting. I know Clutch Masters is doing carbon with sprung hubs for the street. | ||
| Simon Campbell (Simonc)
Junior Member Username: Simonc Post Number: 100 Registered: 2-2002 |
Henryk, please post what you find out here. I am very interested in this. | ||
| Henryk (Henryk)
Member Username: Henryk Post Number: 777 Registered: 8-2001 |
Do you have a number, or web site? | ||
| JRV (Jrvall)
Intermediate Member Username: Jrvall Post Number: 1675 Registered: 11-2002 |
Did you call Bill @ GT Car Parts for a clutch price quote? | ||
| Henryk (Henryk)
Member Username: Henryk Post Number: 776 Registered: 8-2001 |
I am in the process of replacing the clutch in my 83 BBi. I am in contact with Tilton and they are talking of a carbon/carbon/ clutch, with lightweight flywheel. Has anyone had any experience with this type of clutch? I do not track my cars, but do drive aggressively, at times, by red-lining through the gears. Thanks |