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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Wed, May-15-2019, 07:41:39 PM   #21
stash1
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by Blaikenstein View Post
Would a before and after dyno show a change based on harmonics? I can maybe get a baseline pull Friday before putting this on Saturday.

If thereís another way of objectively measuring a change let me know.
Ima gonna say no.
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Old Thu, May-16-2019, 06:57:15 AM   #22
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by Blaikenstein View Post
Most people just replace the stock unit after 100kish. If your driving the car hard maybe every 70k and if itís a serious track car every season.
Are those timeframes really realistic? I have never heard of this part being such a consumable like that... At those timeframe I would expect to hear of people changing them at the same time as their rod bearings ~100kish...

I mean admittedly I never asked him about the balancer directly but when I got my S54 rebuilt through Andrew Lang we spoke heavily about making sure all the right parts on my rebuilt engine were fresh and my engine would be good for thrashing for the next 100+k's (not including valve shimming which is standard etc) and the balancer was never mentioned and I believe mine is just the one of the donor engine not a new one...

you have piqued my interest and I am going to have to go back and have a look at my invoice and our conversations now
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Old Thu, May-16-2019, 11:55:37 AM   #23
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Default Re: Ross performance s54 harmonic balancer

My factory original is still happy at 150,000+ miles, including ~20,000 track miles.
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Old Thu, May-16-2019, 05:12:28 PM   #24
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by STAATS View Post
Are those timeframes really realistic? I have never heard of this part being such a consumable like that... At those timeframe I would expect to hear of people changing them at the same time as their rod bearings ~100kish...



I mean admittedly I never asked him about the balancer directly but when I got my S54 rebuilt through Andrew Lang we spoke heavily about making sure all the right parts on my rebuilt engine were fresh and my engine would be good for thrashing for the next 100+k's (not including valve shimming which is standard etc) and the balancer was never mentioned and I believe mine is just the one of the donor engine not a new one...



you have piqued my interest and I am going to have to go back and have a look at my invoice and our conversations now

Iím going to mount the Ross damper this weekend so long as my crank bolts come in on time so Iíll let you know if thereís an immediate change. If everything goes as planned this will be a track worthy reliability upgrade for roughly what the stock unit costs. Iím also going to experiment with an over running alternator pulley to further smoothen out the forces on the damper.

I guess it depends on what your definition of thrashing is but here are a few older track focused threads on the subject. Those are reference points of the stock damper failing and in some cases taking the engine out with them. With the high red line and known rod bearing issues I think the damper is an overlooked maintenance item that can keep the s54 from eating itself.

Ian is a reference point on his not exploding but I also think his is more of a weekend car that sees ~13% track time. If your definition of trashing is getting after it on a regular bases with 30+ minutes of hard lap time I think itís a valid argument to replace it or at least keep an eye on it and run a cooling duct.

https://www.bimmerforums.com/forum/s...lancer-failure

http://www.m3forum.net/m3forum/showt...=326722&page=3
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Old Fri, May-17-2019, 01:30:29 AM   #25
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by Blaikenstein View Post
Iím going to mount the Ross damper this weekend so long as my crank bolts come in on time so Iíll let you know if thereís an immediate change. If everything goes as planned this will be a track worthy reliability upgrade for roughly what the stock unit costs. Iím also going to experiment with an over running alternator pulley to further smoothen out the forces on the damper.

I guess it depends on what your definition of thrashing is but here are a few older track focused threads on the subject. Those are reference points of the stock damper failing and in some cases taking the engine out with them. With the high red line and known rod bearing issues I think the damper is an overlooked maintenance item that can keep the s54 from eating itself.

Ian is a reference point on his not exploding but I also think his is more of a weekend car that sees ~13% track time. If your definition of trashing is getting after it on a regular bases with 30+ minutes of hard lap time I think itís a valid argument to replace it or at least keep an eye on it and run a cooling duct.

https://www.bimmerforums.com/forum/s...lancer-failure

http://www.m3forum.net/m3forum/showt...=326722&page=3
Interesting....

I still think that is a tiny sample size so statistically this doesn't sound common when you compare how easy it is to find posts on rod bearing, subframe or VANOS failures and normally if someone has had a failure the first place they come is a message board...

That said I am still interested in your test. Ross is an Australian vendor so if it turns out its a good product and I need one then I guess this would make that decision easy for me.
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Old Fri, May-17-2019, 12:18:28 PM   #26
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Default Re: Ross performance s54 harmonic balancer

You can find isolated examples of every component of every car failing. That doesn't make it prudent to replace it with an unknown.

2 examples from 8-9 years ago doesn't strike me as compelling. Even within those, I wouldn't be at all surprised if they were the result of the owner going to a a light weight flywheel on the other end of the crank.
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Old Fri, May-17-2019, 01:43:38 PM   #27
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by Obioban View Post
You can find isolated examples of every component of every car failing. That doesn't make it prudent to replace it with an unknown.

2 examples from 8-9 years ago doesn't strike me as compelling. Even within those, I wouldn't be at all surprised if they were the result of the owner going to a a light weight flywheel on the other end of the crank.


Iím not sure you went through the 4 pages of both of those threads but no big deal. Something your overlooking is the rubber throughout this car is not great and with them getting 10+ years old likely need to be replaced regardless.

Iím looking at this as an experiment and an alternative to the ATI damper. It may not be prudent for non dedicated track cars but I donít t see any reason to avoid upgrading the damper if itíll reduce the engine harmonics, especially on an engine that sees the 8k redline often.
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Old Fri, May-17-2019, 01:54:03 PM   #28
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Default Re: Ross performance s54 harmonic balancer

Another thread

http://m3forum.net/m3forum/showthread.php?t=415389
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Old Sat, May-18-2019, 12:04:16 AM   #29
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Default Re: Ross performance s54 harmonic balancer

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Originally Posted by Blaikenstein View Post
Hmm interesting...

In any case I am definitely interested in seeing your feedback and assessment of the Ross Performance damper. Given they are within Australia and apparently even shipping it to you in the US was cheaper than an OEM one then it sounds like a better option for me personally here down under if you come back with some positive feedback and I ever find myself in a position where i need one haha so I am at least sub'd out of pure curiosity on where this goes
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Old Sat, May-18-2019, 02:53:22 AM   #30
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Default Re: Ross performance s54 harmonic balancer

So how do you plan on quantifying the improvement? S54 damper doesn't fail all that often. Even if it was a 100k mile maintenance item, $560 every 100k isn't that big of a deal vs the same amount of money on a completely unknown product.
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Discussing Ross performance s54 harmonic balancer in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)