QuarterMaster clutch daily driver feedback?

[Lonnie gandee]

Hey guys. Anyone out there have a QM clutch in their ride and wanna give some feedback..

Especially if your car is DD... I drive mine at least 3-4 days a week....

I've heard a little about the chatter, and the instant engagement....


Thanks for any input...

 

[SethA]

I run a PTT twin daily driven. Yes it does chatter, makes noise when not under load and while decelerating, and is on/off. Once you are rolling though it is great. Shifting and rev matching are like a dream. At first it was much harsher. It has mellowed or maybe I have figured it out?

The on/off part is greatly reduced by installing the isuzu slave cylinder. I initially ran the stock slave and it was much more abrupt. I have been wondering about acually looking into an even slower slave....

Now I only hate it when I have to travel in stop and go traffic up a hill. Starting up hill with a couple people in the car requires right foot braking while 3 pedaling the throttle and taking the clutch up to just engage before taking off. The whole trick to the thing is finding that take up point before trying to go. I have only ran the clutch for about 6 months and have not dropped the transmission to examine the disks but the PTT seems to handle this sort of abuse just fine.

At my power level I wish I had ordered organic disks. Other than that I don't regret choosing it over a single disk one bit.

Seth

 

[JackM]

An employee of mine runs a QM and he likes it a lot and DDs his car. He has over 12k miles on the clutch now and no issues.

Jack

 

[prostreetdsmx1]

I would personally not recommend the QM for anyone as a daily driver. it is SUPER LOUD and engagement is far too rough and clampy to work well in a stop and go type drive.

 

[JayRolla]

A buddy of mine has one and yes engagement is loud and rough, but it will handle whatever you through at it. Jacks employee hes talking about puts down a lot of power and it takes all the abuse he throughs at it which is a lot.

 

[sbiggi]

I have a PTT. Once you get use to the engaugement, its not bad. Stop and go is pretty annoying though. My PTT doesnt make hardly any noise like others that I have heard.

 

[JayRolla]

Well I guess your lucky. My buddy has one on his GVR4 and I laugh at him everytime we drive it. He hates it, and I recommended the clutch when he did his stroker/tranny build so it was done right and he gets mad at me when I laugh at the sounds it makes.

 

[Slippi84]

This is a big question about a lot of parts for dsm guys. To be honest it's all what you can tolerate. Like I plan on running a dogbox and PTT clutch in my talon which I will drive on the street at times not as a DD but still a street/track machine. I'm not worried about it because I know what to look for and what it's gonna do and I can live with that. That's what you need to find out for yourself if you can live with the side effects of a certain part and determine for you if you can live with that.

 

[FonZ454]

I'm also interested in this.

Noise I can deal with, engagement I can deal with, but long term effects on the transmission and clutch is what I'm concerned about. I put ~15,000 miles or more on my car a year, would I see parts failing?

Everything I read and hear is twin disks make the car shift amazingly and hold whatever power you throw at it . I want that. I'll learn to re drive the car again, I just don't want to be dropping my tranny more than I need to because of issues.

 

[VETTE_50_TH]

I'm also interested in this.

Noise I can deal with, engagement I can deal with, but long term effects on the transmission and clutch is what I'm concerned about. I put ~15,000 miles or more on my car a year, would I see parts failing?

Everything I read and hear is twin disks make the car shift amazingly and hold whatever power you throw at it . I want that. I'll learn to re drive the car again, I just don't want to be dropping my tranny more than I need to because of issues.

QFT. I'm in the same boat. I am getting my tranny rebuilt before putting my AWD talon together but i dont know what clutch to get. 400-500 hp and tq is a lot for a DD which is about what i want/will have, and a ACT HD2900 or 3200 is not what im looking for. I don't want to workout to drive my car.

Can you guys explain the noise it makes a little more. Or take a video. That would be awesome. Esp. for us guys who dont know anyone with a PTT or QM within 40 miles of home.

James

 

[SethA]

With the clutch in, the floater plate rattles around. It sort of sounds like a transmission growl or when an inspection cove is rubbing on flywheel (but more muffled).

Lazy engagement sounds like sliding a chair or table in a big room. Kind of a loud squeek. Slipping while doing a launch is silent. I think this is typical of all unsprung disks.

Coasting and deceleration sound sort of like a loose piece of exhaust shielding that is vibrating.

I'll see if I can make a video.

Seth

 

[SethA]

Here is a video.

YouTube - MVI_5227.avi

The first part is the floater plate at idle. You can't really hear it very well. Frankly my fuel pump is louder inside the car. Outside the car it is a little louder.

The chair scooting sound is next. I pushed the clutch in while rolling, waited for the rpms to fall, then let out the clutch making the momentum of the car pull the engine RPMs back up. This only happens in the real world if you are a lazy shifter and don't rev match. Sometimes you will get a much quieter version of this sound while taking off.

The third higher RPM sound is the no load / deceleration tinny noise. Sorry it is hard to hear over the exhaust. Maybe I will try to do another video sometime with my big muffler on.

I know everyones idea of acceptable is different. But I would think for the average dsm guy with a modified car the sound will not be an issue. More ponderous is the grabbiness- low inertia-quick engagement issue for a daily driven stop and go car.

The other issue is the effect on the transmission reliability over the long hall. I have seen posts from guys who have been running the clutches for a while (15k?) and have nothing but good things to say. The only negatives I have heard are people referring to EVO twin setups, not DSM. I guess when more people start running them and after we get some miles we'll all know for sure.

Seth

 

[1992awdlaser]

http://www.dsmtuners.com/forums/drivetrain-tech/306947-twin-disk-cons-pros.html

 

[VETTE_50_TH]

So wait, that part where it sounds like a a man a with a deep voice is saying, "uoooop" is where the discs are grabbing? Also i hear the tinny sound you are referring to and that doesnt seem so bad.

Thank you for the video!!

James

 

[JamiesTSI]

The organic disks will allow you to slip the clutch more then the metallic disks. The organics will hold more torque then the metallics also. But the organics will heat up faster then the metallics under numerous hard launches.

 

[JackM]

The organic disks will allow you to slip the clutch more then the metallic disks. The organics will hold more torque then the metallics also. But the organics will heat up faster then the metallics under numerous hard launches.

That is wrong. Organic disks do not hold more torque.

Jack

 

[sbiggi]

That is wrong. Organic disks do not hold more torque.

Jack

PTT organic discs hold more tq then their standard Sintered Bronze discs. Less then their Sintered Iron disc though.

http://www.powertraintech.com/Files/PDFs/Clutch Facts.pdf

From Extremepsi.com:
- High Torque Plate w/ Organic Disc: 800 Lbs./Torque
- High Torque Plate w/ Metallic Disc: 650 Lbs./Torque
- Standard Torque Plate w/ Organic Disc: 600 Lbs./Torque
- Standard Torque Plate w/ Metallic Disc: 475 Lbs./Torque

 

[SethA]

So wait, that part where it sounds like a a man a with a deep voice is saying, "uoooop" is where the discs are grabbing? Also i hear the tinny sound you are referring to and that doesnt seem so bad.

Thank you for the video!!

James

Yes, if you are you referring to the two "uooooop"s just after I start to move. Those are when the clutch is in, the car is rolling, the transmission is in gear, and the engine is idling when I then pop the clutch making that noise. If the rpms where higher than car speed-gear then it wouldn't make that sound. It only makes that noise because the engine is idling when I let the clutch out.

As long as you upshift fairly quickly (so that the rpms don't fall below the next gear) and rev match to down shift you will rarely hear that uoooop-chair/table scooting sound. Sometimes you will get a little of that uooop when you take off and shift, but most of the time taking off is silent except for some occasional chatter.

Seth