clutch options

[chevyCowboy]

when i pulled the clutch off the fly wheel i found the flywheel bolts to be worn and the inner springs on the clutch where worn as well where they rubbed on the bolts any one have any idea why this could have happened. the only thing i can think of is that the clutch is worn out and the disc is to close to the fly wheel. but it never sliped or any sign of be wornout.

going to put a new one in
i have looked at the sbc and luks not sure which to go with any recomendations

sbc seem to very pricey

what was in the truck was a luk and it never seemed to slip

 

[BigBlueChevy]

South Bend CON OFE :

 

[chevyCowboy]

CON OFE??? i thought i was uptodate on the abbriviations

 

[BigBlueChevy]

First check this out:
http://www.southbendclutch.com/rightclutch.html

As for the abbreviations, "Con O" is Souths Bends "organic lined clutch". "Con OFE" is an Organic and Feramic Facing. And "Con FE" is there 2 faced Feramic Clutch. The O engages the smoothest, the OFE has moderate engagement, and the FE is more of an aggressive clutch.

I've played with a lot of different clutches. Though I personally have never used a South Bend, I do enjoy a smooth engaging clutch. This "luk" one you mention? How did that hold up for you? Did you like it?

 

[packratt]

After I had the center section of an OEM (LUK) clutch disc fail I went with a Zoom High Performance clutch. No problems so far.

 

[chevyCowboy]

First check this out:
http://www.southbendclutch.com/rightclutch.html

As for the abbreviations, "Con O" is Souths Bends "organic lined clutch". "Con OFE" is an Organic and Feramic Facing. And "Con FE" is there 2 faced Feramic Clutch. The O engages the smoothest, the OFE has moderate engagement, and the FE is more of an aggressive clutch.

I've played with a lot of different clutches. Though I personally have never used a South Bend, I do enjoy a smooth engaging clutch. This "luk" one you mention? How did that hold up for you? Did you like it?

the luk seemed pretty good not sure how long its been on there but in the 3yr iv had it its been good im just not sure if it was the right one due to the way the fly wheel bolts and springs are worn ill take some pic the next time im over there its in my bros garage. never had any problems with it slipping and iv pulled some stumps and pretty stuck vehicals out dont do to much heavy towing i just want a good clutch that graps good and will hold up. these nv4500 are heavy and i dont like having to drop them

 

[chevyCowboy]

After I had the center section of an OEM (LUK) clutch disc fail I went with a Zoom High Performance clutch. No problems so far.

how long you had the zoom in

 

[packratt]

About 15-25,000 miles

 

[GmcLbz]

Give us a call I think we can help you out.:thumbsup:

 

[BigBlueChevy]

the luk seemed pretty good not sure how long its been on there but in the 3yr iv had it its been good im just not sure if it was the right one due to the way the fly wheel bolts and springs are worn ill take some pic the next time im over there its in my bros garage. never had any problems with it slipping and iv pulled some stumps and pretty stuck vehicals out dont do to much heavy towing i just want a good clutch that graps good and will hold up. these nv4500 are heavy and i dont like having to drop them

I'm NO proffesional with clutches, but it sounds to me like its an older clutch. From what I've heard, as the clutches start to get older, all the "clutching" (especially an around town truck), tends to naturally wear the bolts and associated parts...

Definatly give GMCLBZ a call. They may be better help than we are):h

 

[625fireman]

I have had a problem with the first Luk I put in. It failed (center section broke right out of it) Granted it was in a 1 ton dually that weighs 5700 Lbs and I was towing a load of scrap that weighed 10,000 tare so total weight was up to around 17-18 K with trailer and all. Luk are nice standard duty but SB, Zoom, Centerforce,Valair etc would work for heavy loads better by far. Defintly see what GMCLBZ can do for you. Agreed 110% NV4500's are not something you want to pull out every other day especialy with a transfer case behind it.

 

[chevyCowboy]

here are the pic of what is worn on the clutch/springs/and flywheel

 

[ak diesel driver]

That flywheel has definately been hot.

 

[chevyCowboy]

i guess no one has ever seen the likes of that???

 

[625fireman]

Sorry just got to the pics.... That is exactly what mine looked like when the disc seperated. Mine took out the input bearing and input shaft too.

 

[chevyCowboy]

Sorry just got to the pics.... That is exactly what mine looked like when the disc seperated. Mine took out the input bearing and input shaft too.

its ok figured no one say it thought i would make a post so it came to the top

oh well was going to put a new clutch in any way guess i will need a new flwwheel as well now

 

[packratt]

Go with the old style solid pilot bearing. They don't sieze and tear up the snout of the input shaft.

 

[chevyCowboy]

do any of you have experince with flywheel turning? how do i kno wif mine can be turned?

 

[chevyCowboy]

Go with the old style solid pilot bearing. They don't sieze and tear up the snout of the input shaft.

i have heard lots of different things concerning pilot bearings some say to go witht the kevlar bushing type and others say to go with the old needle bearing type. any advice?

these pics are for gmclbz

 

[6.2 turbo]

A bronze bushing for an older 350 will work fine.