Clutch rattling when engaging in 1st

[Wufei]

Heya,

When my clutch is engaging as I'm starting from a stop in 1st gear, if the RPM's are below 1k it'll make metallic rattling noises. I recently had a guy install the clutch (brand new ACT 2600), flywheel (Fidanza with new flywheel surface), and rebuilt tranny. Is this normal or is something wrong?

Thanks!

 

[Old Mitsu Tech]

I've been reading a few posts about lightened flywheels making noise. Post a search about lightened flywheels and see what you turn up. The ACT 2600 has a whole book on it also. Mostly about difficulty getting into gear and such.

Good Luck

 

[DSM90AWD]

The ACT street discs are "sprung" to make clutch engagement less jerky. Unfortunately, every now and then, one (or more) of the springs becomes loose causing a disturbing sound on engagement. Friend of mine had such a situation several years back on a brand new 2600# w/street disk and it went away on it's own after several weeks.

Then again others have posted of more serious issues.

The sound could also be caused by a worn T/O bearing which should always be replaced when installing a new clutch to be safe

 

[Wufei]

It's kind of like a clunking noise. I ordered the 2600 kit from Slowboy around Xmas, and it came with a T/O bearing, just not sure if it's OEM. Did a search a while ago on Fidanza's and couldn't find anything like this, searching again though.

Thanks for the quick replies!

 

[Wufei]

I think it also does it a bit when engaging from 1st to 2nd gear. The sound is coming from the tranny part (in front of passenger side).

My friend took a drive in it today. Right now, we're suspecting either that one of the bolts holding the tranny may be loose, the TOB (from Slowboy, do they give OEM ones?), a spring on the clutch, that the new friction surface didn't have the bolts loctited, or that the new friction surface may be a tiny bit out of spec.