bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 09:34 PM Share Posted 09/09/15 09:34 PM Here's a good head scratcher for everyone. Just got a new xtreme twin plate clutch installed with arp flywheel bolts. When I picked up the car, as soon as I started it there was a rattle noise only heard on idle. I drove it home and by the time I got home it was a lot worse. The noise only comes when car is settled at idle, as soon as any revs are applied or the clutch is engaged the noise goes away, when driving the noise is gone. It sounds like a horrible metal on metal rolling/ vibration noise that's initiated when the revs drop right down to idle.So I took the car back to my mechanic and he pulled the box and clutch out again and replaced the throw out bearing with a solid brass bush as well as changing the flywheel bolts back to stock ones as they have a much bigger clamping surface than the arp bolts and torquing them correctly, re installed and noise was gone. Yay! Went for another short drive and the rattle slowly started coming back FML! would happen maybe 50% of stops. Then got worse and worse until it happened every stop again. Got back onto my mechanic and we are going to drop the gearbox oil and see what it looks like and go from there. Does anyone have any other ideas of what this noise could be? Car was fine before new clutch, only has 13,000kms on it, my mechanic has installed the exact same clutch in my mates f6 only Afew months before so it's not like he doesn't know what's going on. Here's a vid of the noise. https://vimeo.com/138801973Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 4m 4d Posted 09/09/15 10:06 PM Share Posted 09/09/15 10:06 PM Vid doesn't work for me. Is your clutch solid plates or sprung playes? I'm gonna guess that they are solid plates and it is the gearbox rattling at idle. Link to comment Share on other sites More sharing options...
bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 10:45 PM Author Share Posted 09/09/15 10:45 PM https://vimeo.com/138808331Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 10:47 PM Author Share Posted 09/09/15 10:47 PM Try this one, hopefully it works, I think clutch is sprung but not 100% sure, if anyone could confirm that would be good, 230mm xtreme twin plate ceramic Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 8m 3d Gender: Male Location: Adelaide Posted 09/09/15 11:09 PM Share Posted 09/09/15 11:09 PM Hahahaha welcome to owning a twin plate ceramic clutch That's normal the sound Best described as two dinner playes clanging away Enjoy Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 11d Gender: Male Location: Perth Posted 09/09/15 11:27 PM Share Posted 09/09/15 11:27 PM Yup, that'll be the intermediate plate clanking away with no load. Totally normal. The area circled red are the drive tangs, they engage into the slots in the flywheel (yellow arrow) to transfer the drive. With no load these plates float and the noise you hear is the tangs being knocked around by the minor variation in crank shaft speed at idle.NPC and MWA use nylon damper/isolators to prevent this noise, and the original FPV AP Racing twin plates in the b series uses a spring steal damper/retainer.How much power are you making? Going from ARP to stock and the Correct Sealed roller to a brass bush is a lose IMHO.A twin plate clutch has a fair bit of weight the need to be supported by the input shaft so the bush probably won't last long. Link to comment Share on other sites More sharing options...
bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 11:36 PM Author Share Posted 09/09/15 11:36 PM Yup, that'll be the intermediate plate clanking away with no load. Totally normal. The area circled red are the drive tangs, they engage into the slots in the flywheel (yellow arrow) to transfer the drive. With no load these plates float and the noise you hear is the tangs being knocked around by the minor variation in crank shaft speed at idle.VETWINPLATE1.jpgNPC and MWA use nylon damper/isolators to prevent this noise, and the original FPV AP Racing twin plates in the b series uses a spring steal damper/retainer.How much power are you making? Going from ARP to stock and the Correct Sealed roller to a brass bush is a lose IMHO.A twin plate clutch has a fair bit of weight the need to be supported by the input shaft so the bush probably won't last long. So it's normal to make that noise in neutral with the clutch out? That's ridiculous if it's normal! And you think it's got nothing to do with the gearbox? I'm making 380rwkw and my mechanic reckons the normal bearing is a weak point and the brass bush is the way to go, it's the first thing he replaces in all his cars as well (r32 with 550wkw). Is there any way to stop the noise on this clutch or is the only option to change clutches? My mates f6 has same clutch and is quiet as so I don't think it's normal Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 11d Gender: Male Location: Perth Posted 09/09/15 11:44 PM Share Posted 09/09/15 11:44 PM Yes, twin plate clutches that are setup as per the Extreme will rattle at idle. The cerametallic lining only make the noise transfer worse.The stock needle roller spigot bearing is junk. Again NPC and MWA supply a 63003-2RS sealed bearing to replace it. I disagree that the Bronze bush is a better solution, perhaps for the revs the R32 would see but not in your case. 1 Link to comment Share on other sites More sharing options...
bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 11:45 PM Author Share Posted 09/09/15 11:45 PM It's not the twin plate noise in concerned about, I know that noise is normal haha. It's when the car is idling in neutral with the clutch out. My mate has same clutch in his fg f6 and doesn't make a peep when idling in neutral with the clutch out. In making 380 rwkw and my mechanic reckons the brass bush is the way to go as the stock bearing is a weak point and allows the shaft to have too much free play, he changes them in his own cars to the bush (r32 with 550wkw) if it's normal looks like I just wasted ) $2400 cause I'm not having that hahaSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
bjacobs Member 143 Member For: 11y 2m 12d Gender: Male Posted 09/09/15 11:49 PM Author Share Posted 09/09/15 11:49 PM Sorry phone is absolutely wiggling outSent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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