6 Speed and 4 Puck Unsprung
Thread Starter
Senior Member
iTrader: (7)
Joined: Aug 2007
Posts: 1,369
Total Cats: -1
From: Southern Indiana
6 Speed and 4 Puck Unsprung
So, over the weekend, I installed a 6 speed with a 4 puck unsprung clutch and a 2000lb pressure plate. Overall, it was easier than the first clutch job I did on the car but, it was still a major bitch. My impression afterwards is, 1st is useless (I expected that). I find myself crusing in 5th then realizing there is still one more gear. The 4 puck is amazing. It grips so hard. The only eye candy I have however, is this: (yes, that's my crotch)
Reply
0
0
Reply
0
0
Thread Starter
Senior Member
iTrader: (7)
Joined: Aug 2007
Posts: 1,369
Total Cats: -1
From: Southern Indiana
I've not driven it in traffic and hopefully i never have to. It's not a DD. However, if i was caught in traffic, i could probably do it. It just takes a light foot on the clutch and knowing right where the engagement point is. It will slip, you just have to know how to do it.
I have heard that the springs are there to dampen the torsional vibrations. I originally thought that drivetrain stress was the issue but as I read more stuff on it, I find that a lot of people say the springs are there to reduce chatter/noise. The rotation of a piston engine is not smooth, it is jerky. This results in torsional vibration.
http://www.turbomagazine.com/tech/04...ics/index.html
I have heard that the springs are there to dampen the torsional vibrations. I originally thought that drivetrain stress was the issue but as I read more stuff on it, I find that a lot of people say the springs are there to reduce chatter/noise. The rotation of a piston engine is not smooth, it is jerky. This results in torsional vibration.
T: What's the difference between a sprung and unsprung center hub?
S: For a traditional flywheel design (not dual mass), springs are placed in the center of a clutch disc to reduce transmission noises caused by the torsional vibrations (rotational pulses) of the engine. A spring center disc will operate quieter and reduce wear on the center splines of the disc. A rigid center disc, being lighter, will shift faster, engage smoother with high-friction materials, and avoid spring failures. They're race parts and aren't intended for high-mileage applications, since the splines tend to wear out prematurely from the vibration.
Torsional vibration will increase with fewer cylinders, higher compression, hotter cams, higher boost, timing, lighter flywheel, or many aftermarket harmonic balancers.
S: For a traditional flywheel design (not dual mass), springs are placed in the center of a clutch disc to reduce transmission noises caused by the torsional vibrations (rotational pulses) of the engine. A spring center disc will operate quieter and reduce wear on the center splines of the disc. A rigid center disc, being lighter, will shift faster, engage smoother with high-friction materials, and avoid spring failures. They're race parts and aren't intended for high-mileage applications, since the splines tend to wear out prematurely from the vibration.
Torsional vibration will increase with fewer cylinders, higher compression, hotter cams, higher boost, timing, lighter flywheel, or many aftermarket harmonic balancers.
Reply
0
0
my unsprung clutch is just fine wes the 6 speed is very robust man. Once you get used to the clutch it will drive just like any other clutch just takes abit more feel to get good at it.
Reply
0
0
Thread Starter
Senior Member
iTrader: (7)
Joined: Aug 2007
Posts: 1,369
Total Cats: -1
From: Southern Indiana
On a side note, What do you do with your car? Ever go to the drag strip? I wanna see it.
Reply
0
0
Joined: Jun 2005
Posts: 19,338
Total Cats: 574
From: Fake Virginia
Reply
0
0
I have a 4 puck unsprung too. Been there for about a year, not really something I want to sit in traffic with but its never slipped! And I find the weak point is the Torsen not the trans.
One Clutch > Torsen 2 So far.
One Clutch > Torsen 2 So far.
Reply
0
0
Reply
0
0
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
graexodus
Miata parts for sale/trade
5
Oct 26, 2015 01:48 PM
Greasyman
General Miata Chat
2
Sep 28, 2015 10:44 AM
