Hello. Do dual disc clutches have crazy pedal pressures? You may have noticed all my clutch quesitons lately. Everyone is swearing by a SB double disc, like they last forever & take much abuse.
Thanx.

 

They are harder to push in, yes, but you can get a hydraulic upgrade from Southbend for about $200 that will help with that a lot. It's still going to be more firm, but you get used to it after a week. It depends on what clutch you get too. The stronger the clutch, the more pressure it takes to push that pedal down.

 

i just got the 3600 and it is a big difference but u get used to it

 

A DD's life span is determined by what it is used for.

Pedal pressure is definitely increased than over stock.

The reason the SBC is sworn by is Excellent service (second to none) from SBC. Secondly the clutch uses a steel flywheel and pressure plate that are SFI rated w/ inserted rebuildable face on the flywheel.
Also a variety of plate loads, and puck configurations and material's to keep all crowds happy.

It doesnt get any better.

 

I just replaced an old OLD 3250 10CB clutch with a new 3250 12cb clutch...Pedal pressure is reduced, engagment is smoother, even with only 300 miles on it! The only thing I don't like better, is the new clutch is noisier...but not by much! My old clutch was really quite because the floater plate "bolted" in with metal tabs to cut down on chatter...the new clutch does not, and it is still very quiet!

South Bend Clutch is the ONLY place to go for clutches!
Chris

 

It looks like they have double discs with stock pressure. Anyone ever use one.

 

I ran the lightest clamp load dual disc for a while. I think it's the 3250#.

My girlfriend could drive it and she did not complain.

The clutch is definitely stiffer, but the most noticeable thing is that there's no breakover. With the stock clutch, the initial push is hard then it gets easy.

The DD requires the same pedal pressure all the way to the floor, but you don't need to get it to the floor. Just an inch or two disengages it completely.

I think you need to think about the rest of the DD drivability issues before pedal pressure. That you can get used to.

And by the way, SBC is definitely the place to go for any clutch!

 

not to hijack or anything, but what are they, I been looking at a DD myself.

understandable, but what is sortof a ball-park guess if you don't pull?

 

JC, what other issues are there to consider about DD's?

I mentioned before I was set on an ofe but I am now thinkin of a 6 cb 3250 or possible a 3600. I dont want to have to do this again, and besides the cost and noise what are the other downsides to a DD?

I do tow, not realy often but when I do it is usualy heavy, and/or livestock so enguagement and disenguagement are a huge factor.

 

im trying to get used to taking off tough. it grabs so hard its different to get used to.

 

Things I noticed about a DD-

-Loud idle (greatly reduced by spending $400 on a Fluidampr)
-Grabbiness (sp?) can be reduced by the occasional 3rd gear launch or sled pull
-The transmission becomes loud, especially in direct (4th or 5th, depending on trans), only worse when towing heavy
-Slow shifting-some DD's shift slower than others

If you're willing to deal with these things, then a DD is the way to go. If I was going to sled pull, I'd definitely get another DD. For me it's about driving and having fun in a congested area. Dual discs are not for that.

If I lived in a rural area, I would never have gone back to a single disc.

 

So its grabby enough to be trouble in traffic?

Im thinkin maybe I will just go with my original plan of doin an ofe and hydrolics. If I smoke it, oh well I guess I should have gotten a DD, you live and learn.

BTW, thanks for the help JC

 

I have a 3600 in my '98 WITHOUT the recommended hydraulic upgrade, and it's fine. Mine is the 12 cb ceramic model, and it's not too grabby for me. It's grabbier than stock, but that's where you get used to it. I do know this-at any foreseeable power level on my truck, when I let it out it WILL NOT slip.