New Member F Type I came from Lotus
#22
10-03-2019, 07:47 PM
#23
10-03-2019, 09:06 PM
Veteran Member
[QUOTE=rbsj;2134700]
The clutch problem was never fully resolved until the gen 4. I was the first proponent of disabling the CDV (Clutch delay valve) when first experiencing the early clutch issues. Doing so had little positive effect. With the gen 4 clutch, I sense absolutely no need to disable it.
Thanks for the replies... No no one scared me off Im very thankful for the info as that was one of my first post I was going to leave is .. "Whats up with the clutch on these"
Looks like my car was manufactured in July 2016 and I guess I have the slippery goofy clutch as first time I drove it .. I didnt like two things.. The clutch was too high engaging.. like half way up.. Im used to it engaging right off the floor.. so now I have to feather it out a little before giving it gas.. a real pain.. second I noticed that driving it normal , the clutch seems fine but hit it hard and quick shift it slips and spins like crazy.. like Im holding my foot on the clutch while accelerating.. horrible.. I dont like that.
I believe from what has been determined, a manufacture date of July 2016 puts it in the second generation clutch assembly. My car, manufactured in 10/15 and appears to have been one of the first second generation clutches which is something that I have been curious about. Your description of the clutch operation is spot on with my experience (engaging about half way up) except that if I hit it hard it still responds well (even at 31K miles). The thing that drives me nuts is the "dump valve cutout" (not sure this is the right term but others on this forum have discussed it) that apparently protects the engine from over revving and those revs hitting the clutch. My reaction to the cost of the clutch assembly change currently is the same as yours but once the warranty period is over it will likely increase a bit.
Looks like my car was manufactured in July 2016 and I guess I have the slippery goofy clutch as first time I drove it .. I didnt like two things.. The clutch was too high engaging.. like half way up.. Im used to it engaging right off the floor.. so now I have to feather it out a little before giving it gas.. a real pain.. second I noticed that driving it normal , the clutch seems fine but hit it hard and quick shift it slips and spins like crazy.. like Im holding my foot on the clutch while accelerating.. horrible.. I dont like that.
I believe from what has been determined, a manufacture date of July 2016 puts it in the second generation clutch assembly. My car, manufactured in 10/15 and appears to have been one of the first second generation clutches which is something that I have been curious about. Your description of the clutch operation is spot on with my experience (engaging about half way up) except that if I hit it hard it still responds well (even at 31K miles). The thing that drives me nuts is the "dump valve cutout" (not sure this is the right term but others on this forum have discussed it) that apparently protects the engine from over revving and those revs hitting the clutch. My reaction to the cost of the clutch assembly change currently is the same as yours but once the warranty period is over it will likely increase a bit.
#24
10-04-2019, 07:54 AM
Veteran Member
I had a unique "privilege" of having each clutch in my car at some point. First Gen clutch is soft, very late and imprecise pick-up and lots of slipping. Second generation clutch was racing-like clutch, it was pick-up at the floor and operated as on/off - having driven many dedicated track cars, it didn't bother me much until it chewed up both differential and transmission (not enough damping in the drive train, you'd need flex disks on both ends of driveshaft to make something like that work). By comparison, forth generation clutch (what you will likely get) is much closer to first generation clutch but minus slipping and with a better pickup feel. Now, I think key difference between third and forth gen clutches is that 4th gen can be used with both 1st get and 2nd gen flywheels (I am not 100% certain about this, but I have seen reports of 4th gen being a direct swap from 1st gen without changing flywheel).
Personally, I find F-type shifting with 4th gen clutch just average. Clutch pedal feel isn't heavy enough for me. Flywheel too heavy, resulting in inertia jerking car if you over-rev with your blip on rev-matching downshifting, and going into gears takes too long (without short shifter). As a result of all of this, I can't shift as fast as I'd like to and it isn't the easiest car to heel-and-toe.
Personally, I find F-type shifting with 4th gen clutch just average. Clutch pedal feel isn't heavy enough for me. Flywheel too heavy, resulting in inertia jerking car if you over-rev with your blip on rev-matching downshifting, and going into gears takes too long (without short shifter). As a result of all of this, I can't shift as fast as I'd like to and it isn't the easiest car to heel-and-toe.
Last edited by SinF; 10-04-2019 at 08:02 AM.
#27
10-09-2019, 07:25 AM
#28
10-09-2019, 08:52 AM
[QUOTE=Unhingd;2134749]
Its comforting to know that the clutch issue has been addressed with the 4th generation clutch and it sounds like most of SinF's issues with it relate to him still using the original shifter (BTW Bruce, the short shifter is a must for the car as well). I believe this is the first time I've seen you guys endorse at least its "sturdiness".
It's also interesting to hear the CDV doesn't play as big role with the 4th gen clutch. How does that work?
The clutch problem was never fully resolved until the gen 4. I was the first proponent of disabling the CDV (Clutch delay valve) when first experiencing the early clutch issues. Doing so had little positive effect. With the gen 4 clutch, I sense absolutely no need to disable it.
It's also interesting to hear the CDV doesn't play as big role with the 4th gen clutch. How does that work?
#29
10-09-2019, 01:45 PM
Veteran Member
[QUOTE=rbsj;2137150]
Its comforting to know that the clutch issue has been addressed with the 4th generation clutch and it sounds like most of SinF's issues with it relate to him still using the original shifter (BTW Bruce, the short shifter is a must for the car as well). I believe this is the first time I've seen you guys endorse at least its "sturdiness".
It's also interesting to hear the CDV doesn't play as big role with the 4th gen clutch. How does that work?
The CDV just slightly reduces the hydraulic fluid flow rate to avoid drivetrain damage if your foot slips off the clutch pedal (or you like popping the clutch).
Its comforting to know that the clutch issue has been addressed with the 4th generation clutch and it sounds like most of SinF's issues with it relate to him still using the original shifter (BTW Bruce, the short shifter is a must for the car as well). I believe this is the first time I've seen you guys endorse at least its "sturdiness".
It's also interesting to hear the CDV doesn't play as big role with the 4th gen clutch. How does that work?
#30
10-09-2019, 02:55 PM
Veteran Member
Many cars use CDV's. My old E46 M3 had one as well which was a 2002 so it's not a new concept. They can cause some unneeded wear for those that know how to drive manuals, but it can also save some clutches from those that don't. I never removed mine in my M3, but I was highly tempted to do so as the delay was noticeable.
Thread
Thread Starter
Forum
Replies
Last Post
SteeR
S-Type / S type R Supercharged V8 ( X200 )
11
09-14-2011 05:56 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)