Go Back  CorvetteForum - Chevrolet Corvette Forum Discussion > C6 Corvette, 2005 - 2013 > C6 Tech/Performance
Reload this Page >

[Clutch comparison] Katech LS9R::McCleod RXT::Mantic Twin Disk

Notices
C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

[Clutch comparison] Katech LS9R::McCleod RXT::Mantic Twin Disk

 
Old 03-18-2012, 12:53 PM
  #1  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default [Clutch comparison] Katech LS9R::McCleod RXT::Mantic Twin Disk

EDIT: Included the LS9X as Katech's website says it should be good to 700whp(but I'm not sure how much torque)

Ok, I'm having the hardest damn time narrowing down a clutch choice. I've gone round and round and round and have finally (I think) narrowed it down between these 3 clutches.

Car info
Car makes 517whp/462wtq and has been as fast [email protected] on stock clutch and it's time for an upgrade.
Car is my daily driver
I may add nitrous(150 wet) in the future, so that is a considering when choosing a clutch.
I frequent the drag strip often so it needs to be able to wishstand the abuse and provide reliability. I don't want to have to swap it out again anytime soon.

Here is my take on each of the three.
All 3 are comparatively priced

Katech LS9R
Essentially a stock clutch with an 'enhanced' pressure plate. 6 bolt flywheel and slave cylinder included.
Pricy for a 'stock' clutch
Nice driveability.
Proven.(I think)
Why can't I just order the LS9 pressure plate/disc and use a different flywheel? Gene lists the LS9 clutch for $471.

Can this clutch be slipped or is it on/off?
How long can I expect it to last?

Katech LS9X
Essentially a stock ZR1 clutch with a different flywheel I believe.
Katech includes a slave and all the other stuff necessary for the swap for $1300.
Will it hold up to drag racing abuse and a 150 shot?
How is the pedal feel compared to the LS9R?

McCleod RXT
I've of great reviews with this clutch, but also heard of some failures with the floater plate warping due to excessive heat.
Can it be slipped?
How long can I expect it to last?

Mantic Twin disk
ECS swears by them
No reviews that I could really find other than "oh its a great clutch"
Interesting design
I'm not sure I want to be the guinea pig and find out it doesn't slip or isn't daily driver friendly.


Any tips, reviews, opinions, or helpful advice is appreciated.

Thanks

Last edited by JUIC3D; 03-18-2012 at 01:10 PM.
JUIC3D is offline  
Old 03-18-2012, 01:13 PM
  #2  
gotjuice?
CF Senior Member
Support Corvetteforum!
 
gotjuice?'s Avatar
 
Member Since: Aug 2004
Location: NCM Lifetime#2195 Bulverde, Texas 78163
Posts: 5,891
Thanked 24 Times in 22 Posts
St. Jude Donor '13
Default

For a daily driver, The Katech LS9R would be my choice. The pricy part is the flywheel. You can use the Katech or Lingenfelter. That is you only option on the flywheel.
gotjuice? is offline  
Old 03-18-2012, 01:52 PM
  #3  
Joe_G
Tech Contributor
Support Corvetteforum!
 
Joe_G's Avatar
 
Member Since: Jul 2002
Location: Ft. Lauderdale, FL
Posts: 14,903
Thanked 216 Times in 184 Posts
St. Jude Donor '08
Default

Joe_G is offline  
Old 03-18-2012, 02:38 PM
  #4  
HC Mechanic
CF Senior Member
 
HC Mechanic's Avatar
 
Member Since: Nov 2009
Location: California
Posts: 1,031
Thanked 27 Times in 25 Posts
Default

I'm very happy with my ACT twin disc

It's rated for 900ft/lb and it's very linear in terms of engagement. A great clutch worth considering in my opinion. I went with it because Charlie (owner of RPM Motors) likes the design, and the fact they have great customer service.

In terms of street use, it's much easier to match revs on downshifts and easier to keep the rear hooked up while shifting mid corner. The ACT is very noticeably lighter than stock.
HC Mechanic is offline  
Old 03-18-2012, 02:46 PM
  #5  
Toxic c6
CF Senior Member
 
Member Since: Sep 2010
Location: Cleveland Mississippi
Posts: 244
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Katech ls9x coupled with a tick adjustable master cylinder and the clutch pedal feel will actually be softer than the stock clutch and master with spring removed. You can slip the crap out of it drives great I have nothing bad to say about it. The guys who installed it said it should withstand my future mods too Heads and nitrous.
Toxic c6 is offline  
Old 03-18-2012, 02:53 PM
  #6  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

9X or 9R Toxic?
JUIC3D is offline  
Old 03-18-2012, 06:14 PM
  #7  
Toxic c6
CF Senior Member
 
Member Since: Sep 2010
Location: Cleveland Mississippi
Posts: 244
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Originally Posted by Justinjor View Post
9X or 9R Toxic?
ls9x
Toxic c6 is offline  
Old 03-18-2012, 07:42 PM
  #8  
winters97gt
CF Senior Member
 
winters97gt's Avatar
 
Member Since: Dec 2007
Location: Somewhere in the Mid 9's TX
Posts: 8,257
Thanked 60 Times in 50 Posts
Default

Awesome driving, Justin. The ACT is junk, I toasted mine with a couple thousand miles and hard track abuse. You know how much I like the RXT. Good luck man!
winters97gt is offline  
Old 03-18-2012, 09:06 PM
  #9  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

Thanks Mark. It's such a tough decision as I'm sure you can understand. Right now, it's a tossup between the katech(not sure which one yet) and the McCleod
JUIC3D is offline  
Old 03-18-2012, 09:30 PM
  #10  
Streetk14
CF Senior Member
 
Streetk14's Avatar
 
Member Since: Mar 2007
Location: Santa Barbara CA
Posts: 2,391
Thanks: 0
Thanked 22 Times in 22 Posts
Default

For a daily driver, I think it's hard to beat the LS9 series. If your stock clutch is taking the kind of abuse it has, I don't think you'll be able to hurt even the regular LS9X. I also like that you can buy a new flywheel insert for ~$50 if you ever wear it out. The regular LS9 (X) pressure plate assembly goes for around $425 if you need a new one ever.
Streetk14 is offline  
Old 03-18-2012, 09:41 PM
  #11  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

^ good point. I am a fan of the OEM stuff as it has shown to persevere in some hard conditions.

If I went with the LS9X to start with, could I 'upgrade' it to the R with just a pressure plate change?
JUIC3D is offline  
Old 03-18-2012, 10:23 PM
  #12  
Streetk14
CF Senior Member
 
Streetk14's Avatar
 
Member Since: Mar 2007
Location: Santa Barbara CA
Posts: 2,391
Thanks: 0
Thanked 22 Times in 22 Posts
Default

Originally Posted by Justinjor View Post
^ good point. I am a fan of the OEM stuff as it has shown to persevere in some hard conditions.

If I went with the LS9X to start with, could I 'upgrade' it to the R with just a pressure plate change?

Yep, the 'R' version is identical to the stock ZR1 disc assembly but the pressure plate has been re-designed for 20% more bite (and pedal pressure) by the OEM parts manufacturer.

I'm actually doing the opposite right now -- going from the 'R' pressure plate assembly to the 'X' version. Decided I'd rather have a lighter pedal than the extra holding power. My drivetrain has to come out soon, so I figured I'd just do it. I'll most likely be selling the LS9R pressure plate/disc assembly for a really good price if you're interested. Has maybe 1000 miles on it.
Streetk14 is offline  
Old 03-18-2012, 10:25 PM
  #13  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

I might be interested but it would have to happen very soon as I have my clutch swap planned for the weekend of April 21
JUIC3D is offline  
Old 03-18-2012, 10:30 PM
  #14  
Streetk14
CF Senior Member
 
Streetk14's Avatar
 
Member Since: Mar 2007
Location: Santa Barbara CA
Posts: 2,391
Thanks: 0
Thanked 22 Times in 22 Posts
Default

Originally Posted by Justinjor View Post
I might be interested but it would have to happen very soon as I have my clutch swap planned for the weekend of April 21

It should be out within the next week or two.... I'll keep you posted.
Streetk14 is offline  
Old 03-18-2012, 10:31 PM
  #15  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

Sounds good, thank you. I'll give Katech a call tomorrow to see what they recommend based on my 517whp/462wtq motor that may be sprayed with a 150 shot in the future.
JUIC3D is offline  
Old 03-18-2012, 11:10 PM
  #16  
gotjuice?
CF Senior Member
Support Corvetteforum!
 
gotjuice?'s Avatar
 
Member Since: Aug 2004
Location: NCM Lifetime#2195 Bulverde, Texas 78163
Posts: 5,891
Thanked 24 Times in 22 Posts
St. Jude Donor '13
Default

Originally Posted by Streetk14 View Post
Yep, the 'R' version is identical to the stock ZR1 disc assembly but the pressure plate has been re-designed for 20% more bite (and pedal pressure) by the OEM parts manufacturer.

I'm actually doing the opposite right now -- going from the 'R' pressure plate assembly to the 'X' version. Decided I'd rather have a lighter pedal than the extra holding power. My drivetrain has to come out soon, so I figured I'd just do it. I'll most likely be selling the LS9R pressure plate/disc assembly for a really good price if you're interested. Has maybe 1000 miles on it.
Want to trade the 'R' for the 'X'? I need to install the 'R' and have an 'X' sitting here now. I don't think the one that I have will hold up to the power I plan on making. Just upgraded to a YSI from a T trim.
gotjuice? is offline  
Old 03-19-2012, 11:00 AM
  #17  
DOUG @ ECS
Premium Supporting Vendor
 
DOUG @ ECS's Avatar
 
Member Since: Oct 2004
Location: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Posts: 22,665
Thanked 341 Times in 289 Posts
Default

I am so positive that you will be in love with the Mantic twin the second you get in it that I will offer you a money back guaranty for you as a CF regular member. This is deal is for you specifically, not an open invitation to everyone, sorry.
We have plenty of guys using this clutch for their DD/track car and everyone is very happy with it. The slip and high RPM disengagement is just incredible, and it feels like your driving a stock clutch during normal street use.
You will also get longer life from this clutch over any of the OEM clutches from the clutch materials used without compromising street use.
If your interested PM me and I'll "make you an offer you cant refuse.."
DOUG @ ECS is offline  
Old 03-19-2012, 11:03 AM
  #18  
JUIC3D
CF Senior Member
Thread Starter
 
JUIC3D's Avatar
 
Member Since: May 2011
Location: Tampa FL (formerly Justinjor)
Posts: 5,025
Thanks: 0
Thanked 5 Times in 5 Posts
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Default

That's a pretty nice offer Doug, thank you.
What makes the Mantic twin so special? It's a new clutch and I researched, but could not find a lot of information about it. Quite frankly, the first I heard of it was when Cajun mentioned it.
How would you compare the ability to slip it to the stock clutch?
JUIC3D is offline  
Old 03-19-2012, 11:12 AM
  #19  
Streetk14
CF Senior Member
 
Streetk14's Avatar
 
Member Since: Mar 2007
Location: Santa Barbara CA
Posts: 2,391
Thanks: 0
Thanked 22 Times in 22 Posts
Default

Originally Posted by gotjuice? View Post
Want to trade the 'R' for the 'X'? I need to install the 'R' and have an 'X' sitting here now. I don't think the one that I have will hold up to the power I plan on making. Just upgraded to a YSI from a T trim.

I actually already have a new 'X' pressure plate sitting in a box in my garage, so I'm good on that. I will be offering my slightly used 'R' for sale sometime soon, though. I'm under 700 whp and don't do much drag racing, so I feel the 'R' is overkill for my uses. I would be keeping it, but my driveline has to come out for an unrelated reason.
Streetk14 is offline  
Old 03-19-2012, 11:22 AM
  #20  
DOUG @ ECS
Premium Supporting Vendor
 
DOUG @ ECS's Avatar
 
Member Since: Oct 2004
Location: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Posts: 22,665
Thanked 341 Times in 289 Posts
Default

Originally Posted by Justinjor View Post
That's a pretty nice offer Doug, thank you.
What makes the Mantic twin so special? It's a new clutch and I researched, but could not find a lot of information about it. Quite frankly, the first I heard of it was when Cajun mentioned it.
How would you compare the ability to slip it to the stock clutch?

I have always been extremely spectacle of any new clutch because I have seen a dozen clutch companies come and go over the years, so when we looked into the Mantic line we decided that we would use them on our own cars or regular local customers here for 1 yr prior to selling them to the general public.
What drew me to the clutch was the overall design and manufacturing process. Every clutch is dyno tested, every piece is individually balanced, it's simply a very well made piece of equipment.
So that caught my eye, but a pretty clutch is not going to sell me just yet. We installed these in several cars and what sold me was driving and racing them. Power shifting is effortless, it can be slipped just like a stock clutch without the on/off grabbing, yet holds the power.

To give another example, we had a customer with another well know twin disc in the car. The car would somewhat regularly miss shifts when drag racing, and on the street it was clear you were driving a race clutch. We swapped that clutch out for the Mantic twin and the WOT shifts became seamless, and he enjoys the street use a lot more now. Thats just one example, we have many like that now.
DOUG @ ECS is offline  
The Following User Says Thank You to DOUG @ ECS For This Useful Post:
HC Mechanic (06-05-2017)

Thread Tools
Search this Thread
Quick Reply: [Clutch comparison] Katech LS9R::McCleod RXT::Mantic Twin Disk


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: