I have a 97 7.3 with 4:10 gearing, my clutch is getting light and I doesnt pull like it use to, so I decided my tax return is going into a new clutch. I know south bend is one of the best, but what I dont understand what the "solid flywheel" conversion means and the " dual mass" fly wheel. Also I have herd a few others such as LUK and Centerforce. what do you all recommend, could yall give me some suggestions please?
boduke@ky
look at valairinc... www dot valairinc dot com. they have great clutches and their about to release their dual discs to us(i will have one soon). so the clutch you need will depend on what you do with your truck(do you tow, do burnouts, race, etc.) also how much power you intend to put to this clutch. valair has single discs that will handle 600hp then their dual discs will hold quite a bit more than that so they have you covered.
now, the dual mass flywheel has springs in the hub of the flywheel to dampen crank vibrations and the clutch has no springs, but yet is not solid. the single mass conversion changed to a solid flywheel(no springs) and the clutch now has springs in it. depending on where you get the clutch will determine the build of the clutch disc. LUK uses a non solid hub clutch to keep noise levels down in the tranny, but i hated my LUK big time and won't recommend them. no clue on centerforce, but i wouldn't recommend them either. Valair and southbend both use solid hub clutch discs for strength which may cause a slight amount of noise in the tranny at idle, but its not bad at all. i prefer Valair for several reasons. a few of them are CUSTOMER SERVICE, prices, and their stuff is ALL made in the USA.
now, the dual mass flywheel has springs in the hub of the flywheel to dampen crank vibrations and the clutch has no springs, but yet is not solid. the single mass conversion changed to a solid flywheel(no springs) and the clutch now has springs in it. depending on where you get the clutch will determine the build of the clutch disc. LUK uses a non solid hub clutch to keep noise levels down in the tranny, but i hated my LUK big time and won't recommend them. no clue on centerforce, but i wouldn't recommend them either. Valair and southbend both use solid hub clutch discs for strength which may cause a slight amount of noise in the tranny at idle, but its not bad at all. i prefer Valair for several reasons. a few of them are CUSTOMER SERVICE, prices, and their stuff is ALL made in the USA.
As was mentioned the earlier PSDs had a Dual Mass FlyWheel (DMFW) setup. It has two masses that are connected together with springs between them to dampen vibration. The problem with them is that they are expensive, can't be simply resurfaced when putting in a new clutch, and mainly they go bad from the spings/retainers going bad causing a nasty vibration problem. The clutch disk is solid and has no dampening springs in it as they are located in the flywheel. The clutches are also very stiff and require considerable pedal effort. Replacing both the clutch and flywheel with stock stuff will run $1100-1200!
The Single Mass FlyWheel (SMFW) kits will usually come with a single piece flywheel (more like everyone is used to), clutch plate, clutch disk, anf throwout bearing. The clutch disk now will have the dampening springs in it vice the flywheel (more traditional). The clutch has a larger diameter, lighter pedal feel, but more low RPM gear rollover noise (bothers some folks, but most live with it for the other advantages (incuding much less cost).
I went with the SBC Con-O on mine and have been happy with it. There are plenty of folks that like their Luk, ValAir, SBC, or Valeo. Cheers!
The Single Mass FlyWheel (SMFW) kits will usually come with a single piece flywheel (more like everyone is used to), clutch plate, clutch disk, anf throwout bearing. The clutch disk now will have the dampening springs in it vice the flywheel (more traditional). The clutch has a larger diameter, lighter pedal feel, but more low RPM gear rollover noise (bothers some folks, but most live with it for the other advantages (incuding much less cost).
I went with the SBC Con-O on mine and have been happy with it. There are plenty of folks that like their Luk, ValAir, SBC, or Valeo. Cheers!
South Bend Clutch# 1944-5OFEK
single mass flywheel, sprung disc, dual friction material (organic for smooth engagement & ferramic for holding power)...450hp rated...
sell dozens upon dozens every year with no failures (within the hp rating)...
There are dozens of good clutches out there...but South Bend has always stood behind their product, gone the extra mile for their dealers...and they have made HUGE investments & commitments to diesel performance events across the nation for YEARS...and will continue to do so.
take care~
Dave
single mass flywheel, sprung disc, dual friction material (organic for smooth engagement & ferramic for holding power)...450hp rated...
sell dozens upon dozens every year with no failures (within the hp rating)...
There are dozens of good clutches out there...but South Bend has always stood behind their product, gone the extra mile for their dealers...and they have made HUGE investments & commitments to diesel performance events across the nation for YEARS...and will continue to do so.
take care~
Dave
well if it helps any i have the luk single mass fly wheel and its very chatery when in 1st and 2nd at low rpms and speed its kinda agrivating but its not bad i also bought the luk clutch at the same time but im not a huge fan of that ill be switching to southbend when i get the money its jus realy realy tight at the top end of pushing the cluth in then gos to nothing and if your not carful it will jus throw your foot out and i dont like that to much plus bc it does that you kinda have to ride the cluth at certan times or it will jus throw u back in ur seat with out ur foot on the gas its agrivating and it has bout 12cthousand on the clutch and seems to be alot looser now but not happy so ill be buyin southbend at some point
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