BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > M3Forum Garage > M3 Track: Racing and DE
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

M3 Track: Racing and DE Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start!


Reply
 
Thread Tools Display Modes
Old Tue, Feb-15-2011, 11:48:10 PM   #21
SC_TR0JAN_M3
Registered User
 
SC_TR0JAN_M3's Avatar
 
Join Date: Jan 2008
Posts: 4,768
Reputation: 0 SC_TR0JAN_M3 is on a distinguished road
Location: Dallas

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

Quote:
Originally Posted by Gtfour View Post
I think if you track the car a lot you should do it before 100k cause they seems to melt-split around 100k

Mine melt at 105k.

It's an ''expensive'' part but it can save A LOT of problem in the end...

Also, i think vibration isn't the only issue. My car is a 2002, it's a 9 years old car and rubber isn't new anymore. And heat also destroy them. I think it's a good idea to duct some cool air to the damper.
were u running a lightweight flywheel? i forwarded your thread about the balancer splitting to mpeg, hence his questions
__________________
New Hotness
2018 Grigio Telesto F80 M3 DCT | :: Bone Stock ::
Gone But Not Forgotten
2004 Carbon Black E46 M3 6 Speed | :: Motion Control :: Performance Friction :: Autosolution :: Ground Control :: Mason :: APEX
Jump to top SC_TR0JAN_M3 is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Wed, Feb-16-2011, 12:24:33 AM   #22
Gtfour
Registered User
 
Gtfour's Avatar
 
Join Date: Jul 2008
Posts: 1,015
In the garage:
Reputation: 0 Gtfour is on a distinguished road
Location: Montreal

Canada




Default Re: Have you change your harmonic balancer on your E46 M3?

I was running a 10lbs aluminum flywheel with FX300 clutch but return to OEM clutch & flywheel for this year with the new engine
__________________
Jump to top Gtfour is offline   Reply With Quote
Old Wed, Feb-16-2011, 01:08:24 AM   #23
J Smith
Registered User
 
Join Date: Nov 2009
Posts: 220
Reputation: 0 J Smith is on a distinguished road
Location: Allentown, PA

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

Quote:
Originally Posted by wrcdave View Post
I have 5 track seasons on my jb flywheel with zero issues. The s54 revs much quicker with less rotational weight as would any engine. I have a 3" duct venting mine since last season as I have heard of this issue popping up but only recently which leads me to believe that the failue has more to do with age and mileage. The rod bearing upgrade is on my list of things to do soon but I wouldn't be afraid to run an aluminum flywheel. If you have a track only car and compete you have no choice but to do all of the mods the rules allow to be competitive. Just my .02
Good info Dave. 5 track seasons with the lightweight flywheel and no issues makes me feel much better about my recent purchase.

How many miles are on your stock harmonic balancer?
__________________
Josh
2011 NASA GTS3 National Champion
2012 NASA GTS3 National Champion
Jump to top J Smith is offline   Reply With Quote
Old Wed, Feb-16-2011, 11:12:57 PM   #24
wrcdave
Mr. Chicken rules!
 
Join Date: Feb 2006
Posts: 759
In the garage:
Reputation: 0 wrcdave is on a distinguished road
Location: Long Island

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

My car has 52k miles on it and about 15k open track miles with my average session time on Watkins Glen of about 50 minutes because I run out of fuel and have no choice but to pit. I put the aluminum flywheel on at about 24k miles and still have a stock clutch with no issues. I would be much more concerned about the rear subframe issue over replacing the hamonic balancer as a preventative measure if I had to choose between the two. You can visually inspect the balancer for rubber seperation but the rear subframe can go without seeing any cracks and than you will spend $$$ repairing it. Josh let me know your thoughts on your new setup. Why is it that my to do list never gets shorter even though I keep dumping money into the car, lol.
__________________
Jump to top wrcdave is offline   Reply With Quote
Old Wed, Feb-16-2011, 11:18:36 PM   #25
mpegripper
Registered User
 
mpegripper's Avatar
 
Join Date: May 2006
Age: 36
Posts: 8,117
Reputation: 0 mpegripper is on a distinguished road
Location: San Jose, Ca

United Kingdom




Default Re: Have you change your harmonic balancer on your E46 M3?

Quote:
Originally Posted by wrcdave View Post
Why is it that my to do list never gets shorter even though I keep dumping money into the car, lol.
i feel the same way, WTF

my main things are subframe, cooling system and harmonic balancer that i haven't done yet. then starter and fuel pump
Jump to top mpegripper is offline   Reply With Quote
Old Wed, Feb-16-2011, 11:52:42 PM   #26
kaiv
SoCal S54 specialist :P
 
kaiv's Avatar
 
Join Date: Jan 2008
Posts: 9,755
Reputation: 0 kaiv is on a distinguished road
Location: San Diego, CA

France




Default Re: Have you change your harmonic balancer on your E46 M3?

eeek scary stuff.

When the harmonic balancer goes, does it cause any other problems or will you be good to go with just replacing it?
__________________
E46 ///M325i Touring journal



Kaiv's SoCal Feedback! IG: limited.slip
Jump to top kaiv is offline   Reply With Quote
Old Thu, Feb-17-2011, 01:58:09 AM   #27
Gtfour
Registered User
 
Gtfour's Avatar
 
Join Date: Jul 2008
Posts: 1,015
In the garage:
Reputation: 0 Gtfour is on a distinguished road
Location: Montreal

Canada




Default Re: Have you change your harmonic balancer on your E46 M3?

Quote:
Originally Posted by kaiv View Post
eeek scary stuff.

When the harmonic balancer goes, does it cause any other problems or will you be good to go with just replacing it?
It depend, i think every case is different. I was kinda lucky since i didn't rev it after it melt, only a rattle coming from the loosse chain guide.

But a friend of mine also split a balancer a month after mine and it break the little bracket on the top of the balancer and it did a hole into the timing chain cover and his crankshaft is bent...

It was like is second time on a track and he did 15 laps... But he is running a standalone since he have a E36 M3 with S54 and he can rev it to 8900rpm... Stock internal and everything...
__________________
Jump to top Gtfour is offline   Reply With Quote
Old Thu, Feb-17-2011, 10:19:34 PM   #28
Mvez
RS-aholic
 
Mvez's Avatar
 
Join Date: Jul 2005
Posts: 2,062
Reputation: 0 Mvez is on a distinguished road
Location: KY

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

Quote:
Originally Posted by wrcdave View Post
I have 5 track seasons on my jb flywheel with zero issues. The s54 revs much quicker with less rotational weight as would any engine. I have a 3" duct venting mine since last season as I have heard of this issue popping up but only recently which leads me to believe that the failue has more to do with age and mileage. The rod bearing upgrade is on my list of things to do soon but I wouldn't be afraid to run an aluminum flywheel. If you have a track only car and compete you have no choice but to do all of the mods the rules allow to be competitive. Just my .02
It does rev amazing fast, god I miss that. BUT, do you not notice the huge resonance vibration at about 5500 rpms? I am talking about the harmonic resonance that is felt when, for example, you are on track in 3rd gear taking it up to 8000rpms , and then stay in 3rd as you slow down, and as the revs pass down through the 5500 range, there is a big vibration. It's the natural harmonic resonance of the S54 engine, and the harmonic balancer cannot adequately dampen that resonance when using a LWFW, hence the use factory use of dual mass flywheel on the other end.

Not saying a LWFW can't be done, just saying that the S54 doesn't like it, especially if you spend alot of time in gear up and down through that rev range. I do. 1 day on track and I pulled it out. I actually have a 20lb JB racing steel flywheel (a prototype, not the Grand-Am version) that they are waiting for me to test with their sprung-hub clutch disc assembly, but to be honest, I am still a bit apprehensive.
__________________
'13 E92 M3 Coupe - Daily
'00 Miata - DE toy
'11 E92 M3 Coupe - track build starting
'12 Cayenne
'09 Ford F350 DRW - tow rig
Jump to top Mvez is offline   Reply With Quote
Old Fri, Feb-18-2011, 02:37:50 AM   #29
J Smith
Registered User
 
Join Date: Nov 2009
Posts: 220
Reputation: 0 J Smith is on a distinguished road
Location: Allentown, PA

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

I dyno'd today for the first time with my JB Ultralite flywheel/clutch kit, and there was no vibration or any harmonic resonance at all throughout the entire rev range. It felt very smooth. This is with solid engine and trans mounts also.

We'll see how it feels on the track tomorrow.
__________________
Josh
2011 NASA GTS3 National Champion
2012 NASA GTS3 National Champion
Jump to top J Smith is offline   Reply With Quote
Old Fri, Feb-18-2011, 11:18:21 AM   #30
wrcdave
Mr. Chicken rules!
 
Join Date: Feb 2006
Posts: 759
In the garage:
Reputation: 0 wrcdave is on a distinguished road
Location: Long Island

United States




Default Re: Have you change your harmonic balancer on your E46 M3?

I have no vibration issues at 5500rpm or anywhere else with my setup. I would say that there are easily 60-70 track days with no issues but my car is track only the last 3 years and was dual purpose before that. The only thing that was annoying when I was street driving was the chatter at idle and this is common. Now that I have the BW race exhaust I can't hear anything other than blahhhh, blahhhh, lol. Do you think your harmonic balancer was shot before you put on the lightweight flywheel? The flywheel would have magnified any existing vibrations with less rotational mass for the crank to turn.
__________________
Jump to top wrcdave is offline   Reply With Quote
Reply

Bookmarks

Tags
balancer, change, e46, harmonic

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 11:33:52 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright 1999-2017 M3Forum.com
Discussing Have you change your harmonic balancer on your E46 M3? in the M3 Track: Racing and DE Forum - Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)