New Clutch-South Bend

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After a lot of research, talking to TDR members, my bombing, driving habits etc. I've decided to purchase and install South Bends ceramic button and kevlar pilot bearing clutch. It's rated at 350HP and 900 ft. + of torque. the manufacture isn't sure what the limit in terms of HP is as no one that has purchased this clutch has exceeded 350HP. So I guess I will be the R&D guy. Plan to install this coming friday and I'll post my results. #ad


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2001 HO 6-sp 4x4 "stock as the day it was born" or should I now say "re-born"

 

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HeberRam,
Will be looking forward to the test results!

 

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Ok. . Ok. . What is the benefits of the ceramic clutch?

Rick

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RICK
97 2500,CC,5 SPEED, 3. 54 Limited Slip,Psychotty System,K&N, ISSPRO 3" Pyrometer,Silencer Ring Removed
12,000 RBW 5th Wheel Hitch,25' Excel 5th Wheel,Rancho RSX17000 Shocks,Amsoil Dealer,Straight Piped

 

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Pls. keep us informed. I have alot of interest in that clutch. thanx... ... ... .

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2001 2500 QC, ETH/DEE,4:10s, LSD, VA Magic Box, Boost/Pyro Guages, 4" Turbo back, BD Brake,Mag- Hytec Cover, Kleen Wheels, Energy Release, 70 gal. fuel, 20K Reese. (RV Dealer)

 

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Coooool.

Let's see if this works.


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Alright HeberRam:

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[This message has been edited by Forrest (edited 12-21-2000). ]

 

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RHarvey... The question you asked about the benefits of ceramic pad or button type clutch would probably better be answered by our own TDR clutch Guru. . Joe Donnelly. However, to simplify, the South Bend clutch, is designed to handle more torque than stock. Its a sprung hub single disk clutch with a Luk pressure plate. This material provides additional holding power and resistance to glazing than the usual organic based lining.
There are other makes such as the Mcleod dual disk and Joe Donnelly's modified Sachs. All have their pros and cons, I'm hopefully the South Bend clutch will react more like stock in regards to pedal pressure, ease of disengagement, vibration dampening and of course handle increased HP and Torque over stock.

 

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I talked to Andy at Southbend Clutch about a month ago. He was telling me about a new clutch similar to this one, that was rated at 400 HP! Is this the same clutch?

Ynott does alot of testing for them, he told me he hadn't had a chance to test this product, but was planing on installing one shortly.

HeberRam, how much HP are you putting to the ground?

I have alot of interest in this clutch also, hopefully between Ynott and HeberRam we can get the inside info on this new product.

Keep us informed!

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<font color=blue>"WHITE OBSESSION" 99 Quad Cab, White, SLT, 4x4, 5-sp, 3:54's, Raven cap (cab high), Rhino liner, Stainless Nerf Bars, Stainless Rocker Panels, Tow package, Pro-flap mud flaps with Stainless Cummins "C" add to rear flaps, Valentine One, Uniden PC78LTW CB, Hadley Bully Air Horns, HOT Power Edge, Psychotty Air Induction, Braided SS Fuel Lines, 4" Jardine Exhaust (Love the deep throaty sound), 285/75R16 Cooper A/T's, Navigator 55w backup lights. </font>

<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1086000&a=9265455" TARGET=_blank><font color=red>My 99 Dodge Cummins</A></font>
<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1086000&a=9815423" TARGET=_blank><font color=green>BD Dyno Days 10/28/00</A></font>

<font color=purple>
Things to come; The clutch has let me know it is going to need attention very soon!
Pyro, 50# Boost and Fuel Pressure gauges (have Ultra lites will install shortly), PE EZ timing module and injectors (have Bully Dog step III injectors ordered), have 2 KC Daylighters (Stainless with 385,000 candlepower each), have 2 KC Fog lamps(Stainless 100w each) and waiting for Smittybilt Stainless Outland Brush Guard to arrive, then will mount guard and lights.

NRA Life Member! (Need to protect our rights and FREEDOM!!)<font size=-2>

[This message has been edited by BIG BOB (edited 12-20-2000). ]

 

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Big Bob. . The South Bend clutch that you are refering to that is rated for 400Hp and 900+ torque is available, but it's for the 5-speed NV4500 transmission. The one I'm getting is for the 6-speed NV5400 transmission. It is simular in design and I believe the only difference is the size difference for the imput shaft? South Bend appears to be (hopefully) understating the HP rating for this new clutch as nobody according to South Bend has put more than 350HP on the clutch. My understanding is that the torque capability is more important that the HP of the engine. I'm currently at 360HP and 740ft. torque at the flywheel. I plan future mods. that will take me to or near the 400Hp+ range. I'm optomistic this clutch will handle this range. #ad


[This message has been edited by HeberRam (edited 12-21-2000). ]

 

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What have you done to your engine to achieve those numbers?

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http://www.mudrunner.sites.cc

 

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HeberRam,

Thanks, you are right, I was talking to Andy about a 5 speed.

Look forward to here from you after you get it installed.




<marquee><font color=red><font size=+2>Have a Merry Christmas!</marquee></font></font><font size=-2>







[This message has been edited by BIG BOB (edited 12-21-2000). ]

 

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How would this work with a slightly 'BOMBED' truck? It will have the BD 2nd or 3rd level cam plate, straight piped and Scott's induction system.

Rick

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RICK
97 2500,CC,5 SPEED, 3. 54 Limited Slip,Psychotty System,K&N, ISSPRO 3" Pyrometer,Silencer Ring Removed
12,000 RBW 5th Wheel Hitch,25' Excel 5th Wheel,Rancho RSX17000 Shocks,Amsoil Dealer,Straight Piped

 

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My concern in addition to going forward is backing up. I have heard these new zoom bombmy clutches like to be hooked up or free. There is no in between. If I am backing a 35ft. 5th up a hill onto a pad, even with my 4:10s, some slipping has to take place. I replaced my stock clutch with stock last month because I was not convinced we had all the info yet. My question, I guess, is how user friendly are these clutches in "real world" operation. Based on my first clutch, I think I have about another 20K miles for someone to sort this clutch thing out.

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2001 2500 QC, ETH/DEE,4:10s, LSD, VA Magic Box, Boost/Pyro Guages, 4" Turbo back, BD Brake,Mag- Hytec Cover, Kleen Wheels, Energy Release, 70 gal. fuel, 20K Reese. 22,000 miles on 12/19/00 (RV Dealer)

 

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Barry, I'm not sure there will be any more magic in the near future, but today's clutches pretty well address what you need. For example, the Sachs clutch with higher clamp load has a massive pressure ring and the facing is almost 3" wide, and of a very high quality organic material with fiberglass and brass wire in it. It will resist hot spotting and glazing as well as anything with an organic resin base. It is very smooth and shudder free. The extra clamp load on the pressure plate gives the deired torque capacity.

Once you get away from an organic facing so it can't glaze, you also get into more aggressive friction facings, like the brass pucks. The brass will slip just fine if engine revs are kept at or above 1100 when creeping along. Eventually wear could be an issue, of course, but it should be OK for occasional slipping.

Until a facing is made with unobtanium impregnated on cantgettium, I suspect we will be dealing with the above types of materials (organic and brass). Bottom line is that they work well enough, and much better stuff than stock LuK is available, for a higher price than LuK.

[This message has been edited by Joseph Donnelly (edited 12-21-2000). ]

 

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Joe: As always you are comprehensive and detailed. And once again I thank you for sharing your expertise with me. Right now, I am leaning toward the South Bend unit.

 

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Well put the clutch in today and have driven approx. 50 miles. Observations so far as follows:

1. It doesn't slip anymore!
2. Pedal pressure. . slightly stronger than
stock.
3. Shifting same as stock, no gear grinding or problem engaging gears.
4. Engagement is direct. . no slipping of clutch when releasing pedal.
5. Slight "chatter" or "shudder" when starting off in 2nd gear. This may be felt more because I'm running with BFG's 315x75x16's
6. When starting off in 1st. gear the "shudder" is gone.

So far I'm pleased with the results, however, haven't pulled any loads yet! It takes a little getting used to the as the clutch engages differently then stock. a little more "grabby" and After a few miles it becomes natural. I know this doesn't help you guys much at this time but I've haven't put many miles on this new clutch. #ad
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[This message has been edited by HeberRam (edited 12-21-2000). ]

[This message has been edited by HeberRam (edited 12-21-2000). ]

 

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There is a good article in issue 29 of the TDR. Page 122, TD RELEASE, on the South Bend Clutch.

I guess it has a kelvar pilot beaing.

HeberRam,

Was the clutch under or over $1,000? #ad




[This message has been edited by HEMI®Dart (edited 12-21-2000). ]

 

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Hemi. . Since we are not suppose to talk about $$$$$'s all I can say it cost 900 smiley's #ad
delivered!!!<img src=http://cwm. ragesofsanity.com/s/owen/council.gif>

[This message has been edited by HeberRam (edited 12-21-2000). ]