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Spec E46 racing class forum
Official Spec E46 racing class forum.

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Old 11-28-2013, 06:43 AM   #1
Nick325xiT 5spd
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Oil Pump Failure

OK, so next question: SpecE46 has settled on the 330. Unfortunately, the M54B30 has that rather expensive oil pump shearing problem in race cars. Will there be a solution offered?
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Old 11-28-2013, 10:01 AM   #2
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Take a look around a little bit more Here is James' take on it.

http://forum.e46fanatics.com/showpos...78&postcount=5

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Old 11-28-2013, 10:50 AM   #3
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As per the rules, either weld the oil pump nut, or use safety wire to secure it.

Evice: that appears to be James' take on the problem with the harmonic balancer. At 8legs we haven't had a problem with our extremely well used ones (and we rev to 7500), but I have heard it can be a problem. A fresh balancer every year is a great preventative maintenance thing, but with the stock redline, I don't see a problem as long as you start with a good one.
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Old 11-28-2013, 10:57 AM   #4
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Quote:
Originally Posted by Lercs View Post
As per the rules, either weld the oil pump nut, or use safety wire to secure it.

Evice: that appears to be James' take on the problem with the harmonic balancer. At 8legs we haven't had a problem with our extremely well used ones (and we rev to 7500), but I have heard it can be a problem. A fresh balancer every year is a great preventative maintenance thing, but with the stock redline, I don't see a problem as long as you start with a good one.
Welding and safety wire do nothing when the problem is that the shaft actually shears off. It's a problem specific to the M54B30 when raced.
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Old 11-28-2013, 11:28 AM   #5
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Welding and safety wire do nothing when the problem is that the shaft actually shears off. It's a problem specific to the M54B30 when raced.
can you point us to specific examples of that happening? who was racing it, and in what class? what other modifications had been done?

Last edited by Spec E46; 11-28-2013 at 11:29 AM.
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Old 11-28-2013, 11:58 AM   #6
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Our team has been racing e46s for a while, with M54B30s and the only time we had a failure was when a bolt loosened off.

Just for reference (more than one engine has been run), we have custom pistons and rods, 11.5:1/12.5:1 compression, ported and polished heads, custom ground cams, solid lifters, springs, lightweight flywheels/clutches, stock and aftermarket harmonic balancers, rev to 7500-7800 rpm and produce well over 300hp.

We have since changed to a different oil pump bolting system, but only because we really didn't want it to fall off again. (it puts a damper in your weekend! lol)

I don't think at the stock RPMs that the oil pump will be a problem, especially if safety wire is added.
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Old 11-28-2013, 11:59 AM   #7
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Quote:
Originally Posted by Spec E46 View Post
can you point us to specific examples of that happening? who was racing it, and in what class? what other modifications had been done?
Talk to anyone who ran a 330 in GAC. Stock motors. TC Kline developed an oil pump that didn't fail, but that got discontinued LONG ago.
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Old 11-28-2013, 12:10 PM   #8
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VAC makes a part

http://store.vacmotorsports.com/vac-...kit-p1077.aspx

We have it on one of our engines, works as advertised (we have used it for the last season)
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Old 11-28-2013, 12:44 PM   #9
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Oil Pump Failure

Turner also have a BMW Motorsport kit.

http://www.turnermotorsport.com/p-18...eller-kit.aspx

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Last edited by Evice; 11-28-2013 at 12:44 PM.
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Old 11-28-2013, 03:43 PM   #10
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Quote:
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VAC makes a part

http://store.vacmotorsports.com/vac-...kit-p1077.aspx

We have it on one of our engines, works as advertised (we have used it for the last season)
I have the VAC kit, but it's still know to fail in 330s.
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Old 11-28-2013, 04:19 PM   #11
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Turner also have a BMW Motorsport kit.

http://www.turnermotorsport.com/p-18...eller-kit.aspx

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I don't think that that is in the spirit of the class either.
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Old 11-28-2013, 06:46 PM   #12
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I don't think that that is in the spirit of the class either.
as long as it doesn't provide a performance advantage, optional items that improve durability or reliability are well within the spirit of the class. they just need to be petitioned and written into the rules.
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Old 11-28-2013, 07:51 PM   #13
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as long as it doesn't provide a performance advantage, optional items that improve durability or reliability are well within the spirit of the class. they just need to be petitioned and written into the rules.
You're kidding, right? A $3,000 oil setup? What about dry sumping?
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Old 11-28-2013, 07:58 PM   #14
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Oil Pump Failure

It is an example. Stop derailing from the main topic.


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Old 11-28-2013, 08:07 PM   #15
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It is an example. Stop derailing from the main topic.


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I started this topic. How exactly am I derailing it? And really, a $3,000 oiling system in a spec class is not a serious solution.
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Old 11-28-2013, 08:22 PM   #16
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I started this topic. How exactly am I derailing it? And really, a $3,000 oiling system in a spec class is not a serious solution.
even if it were allowed, it would be OPTIONAL. relax.
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Old 11-28-2013, 08:27 PM   #17
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Quote:
Originally Posted by Spec E46 View Post
even if it were allowed, it would be OPTIONAL. relax.
Optional parts have the bad habit of becoming either mandatory or necessary...
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Old 11-28-2013, 09:36 PM   #18
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I'm working on being able to source the modified 4 bolt pumps again, but no promises. Similar to the pump that TCKline used to sell, several people on this forum run it as well as in Grand-Am 330's back in the day. It and the $2700 motorsport part are the only bulletproof solutions, IMO.

It would not provide a "performance advantage", unless you consider being able to stay on track by not blowing motors a "performance advantage" .

Last edited by vaio76109; 11-28-2013 at 09:37 PM.
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Old 11-28-2013, 11:14 PM   #19
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Originally Posted by vaio76109 View Post
I'm working on being able to source the modified 4 bolt pumps again, but no promises. Similar to the pump that TCKline used to sell, several people on this forum run it as well as in Grand-Am 330's back in the day. It and the $2700 motorsport part are the only bulletproof solutions, IMO.

It would not provide a "performance advantage", unless you consider being able to stay on track by not blowing motors a "performance advantage" .
my own *personal* definition is:

performance advantage = lower lap times
competitive advantage = enhanced durability/reliability

in spec e46 any modification that provides a competitive advantage without a performance advantage is fine, and will generally be permitted provided it has no other negative impact. the current rules permit many parts to be replaced for this very reason. in other series like chumpcar (which i am also intimately familiar with) where races are much longer and durability plays a larger role, such a modification may not be allowed or will affect your valuation. however, a modification that increases both performance and competitiveness is far less certain and will be rigorously scrutinized by the rules committee.

Last edited by jtower; 11-28-2013 at 11:19 PM.
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