Noise after clutch install.

chris89 · Oct 24, 2012

So I upgraded to a Kevlar/ceramic valair clutch and it has rattled since I have started it up. With the clutch released it rattles and I have to push the pedel in about half way to get the rattle to stop. Has anyone seen this happen or know what it would be?

SoGrand · Oct 24, 2012

What year is the truck? If 94-97 it is very common. 99-03 still common but not as often. If you have the clutch releashed and idle up to 1500 rpm does the noise go away? I will bet it does. It is gear noise from engine harmonic going thru the transmission now. Nothing to worry about. The 94-97 have a dual mass flywheel to dampen the noise. When you put a solid flywheel on it it maginfies the problem. Like i said before nothing to worry about if the noise goes away when you do that test.

chris89 · Oct 24, 2012

Its 2000, makes the noise all the time. It had a solid before also.

Bigsexy · Oct 24, 2012

Call valair, any aftermarket clutch is going to make noise if its anything other then a single disk basic clutch. I know the dual disk clutch we just put in my buddy 2012 cummins sounds like a can of marbles rolling around. I know south bends are a little quieter but not much, but the triple disk is loud as hell.

chris89 · Oct 24, 2012

Yeah that's what mine sounds like buts it's a single disc.

Bigsexy · Oct 24, 2012

I've never put a single in, they've always been duels and triples. I know they've all sounds similar the triples usually the worst

SDstroker · Oct 24, 2012

My DD isnt any louder then my single was. You have everything torqued and loctite?

chris89 · Oct 24, 2012

SDstroker said:
My DD isnt any louder then my single was. You have everything torqued and loctite?

Yeah with blue locktite.

SDstroker · Oct 24, 2012

When you talk about how you have to push the pedal in half way, are you at the point slipping it or just applying pressure for the throwout bearing to make contact with the pressure plate? Sounds maybe spring related? I would call up Dan and ask for his input.
Food for thought look at this http://southbendclutch.com/instructions/sdd-fdd7.3.pdf

chris89 · Oct 24, 2012

I just found time to call valair and they assured me it we normal.

2000wa250 · Oct 27, 2012

Hows your fluid level in the tranny? I know when I put my Southbend DD in, I also changed the fluid. Didnt get enough in there the first time, and it was loud as hell. Pulled the fill plug and shifter, filled it from the shifter point until I could see it/it came out of the fill hole. Put the plug back in and added approximately another quart. Started her up and the noise was MUCH quieter. Also, did you rip your shifter boot? Whatever those things are made out of do an AMAZING job at dampening the noise, however if its not fully seated/sealed, it will let in a ton of noise that will sound like its coming from the trans.

Dieselfever · Oct 30, 2012

2000wa250 said:
Hows your fluid level in the tranny? I know when I put my Southbend DD in, I also changed the fluid. Didnt get enough in there the first time, and it was loud as hell. Pulled the fill plug and shifter, filled it from the shifter point until I could see it/it came out of the fill hole. Put the plug back in and added approximately another quart. Started her up and the noise was MUCH quieter. Also, did you rip your shifter boot? Whatever those things are made out of do an AMAZING job at dampening the noise, however if its not fully seated/sealed, it will let in a ton of noise that will sound like its coming from the trans.

This :whs: Check the fluid and make sure its full, could have been low before and you can loose some from the lines/ports when you pull the transmission(6-speed).

stroker2 · Oct 30, 2012

I have the same year truck and same clutch as you. Only time i have noticed rattle is around 900-1000 rpms in gear. It doesnt do it any other time even at idle