Single Mass noise
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Single Mass noise
I just compleated a motor swap and a single mass conversion and now have a rattle under light throttle that sounds like it is in the trany. Is this normal for the single mass? I know that it makes some noise with the clutch pedal pressed in at idle but don't remember any other noises. I have the alum Fidenza if that maters.
Thnks in advance
Thnks in advance
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
I don't have a single mass FW but from what I've read what you described is what they do. You'll have gear rattle in neutral with the clutch out as well as very light throttle. Sounds like "rocks in a can". Apparently, it will not harm the transmission at all, just annoying.
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Originally Posted by chriswtx
I have a single mass. Rattles like crazy at idle but no rattle when in gear and accelerating. Spark knock maybe?
Last edited by FD2BLK; Nov 13, 2004 at 10:28 PM. Reason: Hooked up the CPU and no knock
Drifting
Joined: Aug 2004
Posts: 1,400
Likes: 0
From: Oceansaide CA
Umm, I have a dual mass, and it rattles when I shut the motor off, and once in a while under really low RPMs.. Kinda scarry, I was starting to think it's a loose clutch or something?
That normal?
That normal?
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
Originally Posted by ClarenceT
Umm, I have a dual mass, and it rattles when I shut the motor off, and once in a while under really low RPMs.. Kinda scarry, I was starting to think it's a loose clutch or something?
That normal?
That normal?
Team Owner
Joined: Sep 2002
Posts: 22,209
Likes: 12
From: OBAMA IS HITLER
I have a Fidanaza 13# FW as well, and while there is definitely that can of rocks rattling sound at idle (clutch engaged gets rid of about 80% of it)....which is annoying....there is NO rattling under acceleration. There is a low fluttering sound while in the lower RPMs (which isn't annoying), this is also normal with a lightweight FW.
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Drifting
Joined: Nov 2002
Posts: 1,365
Likes: 3
From: Huntsville AL
Originally Posted by ClarenceT
Umm, I have a dual mass, and it rattles when I shut the motor off, and once in a while under really low RPMs.. Kinda scarry, I was starting to think it's a loose clutch or something?
That normal?
That normal?
I had this same rattling on my '94, and I thought it was a bad dual mass. Turns out it was the clutch fork rattling around on the ball stud. Whoever reassembled the clutch the previous time didn't grease the ball stud and the clutch fork basically cut the stud down to the point where it didn't fit tightly in the fork pivot hole.
Don't replace your dual mass until you check the fork first!
Thread Starter
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Thanks for all the replys,
It sounds as if what I have is the norm and I will just have to live with it. What is more anoying is the on off characteristics of this stage 3 set up. The cluctch is either on or off no between and it is a bit of a PITA in trafic. The good news is this new motor is a cpmpleate beast and I cant wait for final tuning next week and some dyno #s
It sounds as if what I have is the norm and I will just have to live with it. What is more anoying is the on off characteristics of this stage 3 set up. The cluctch is either on or off no between and it is a bit of a PITA in trafic. The good news is this new motor is a cpmpleate beast and I cant wait for final tuning next week and some dyno #s
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
Originally Posted by FD2BLK
Thanks for all the replys,
It sounds as if what I have is the norm and I will just have to live with it. What is more anoying is the on off characteristics of this stage 3 set up. The cluctch is either on or off no between and it is a bit of a PITA in trafic. The good news is this new motor is a cpmpleate beast and I cant wait for final tuning next week and some dyno #s
It sounds as if what I have is the norm and I will just have to live with it. What is more anoying is the on off characteristics of this stage 3 set up. The cluctch is either on or off no between and it is a bit of a PITA in trafic. The good news is this new motor is a cpmpleate beast and I cant wait for final tuning next week and some dyno #s
Drifting
Joined: Aug 2004
Posts: 1,400
Likes: 0
From: Oceansaide CA
Originally Posted by HammerDown
ClarenceT,
I had this same rattling on my '94, and I thought it was a bad dual mass. Turns out it was the clutch fork rattling around on the ball stud. Whoever reassembled the clutch the previous time didn't grease the ball stud and the clutch fork basically cut the stud down to the point where it didn't fit tightly in the fork pivot hole.
Don't replace your dual mass until you check the fork first!
I had this same rattling on my '94, and I thought it was a bad dual mass. Turns out it was the clutch fork rattling around on the ball stud. Whoever reassembled the clutch the previous time didn't grease the ball stud and the clutch fork basically cut the stud down to the point where it didn't fit tightly in the fork pivot hole.
Don't replace your dual mass until you check the fork first!
So the super loud gear whine from my '89 ZF6 is normal then too, due to the straight cut gears? it was starting to worry me, though meybe it needs oil?
