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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 Sun, Mar-13-2011, 04:10:42 AM   #31
IHatePosers
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Default Re: The cooling system thread - overhaul DIY

great write up! just used this today to -

-replace clutch fan
-replace upper/lower radiator hoses
-radiator
-water pump
-temperature sensor

Just a heads up regarding the pulleys and belts.

To remove the belts and to put them on - there is a torx located on the pulley to the bottom right of the water pump pulley. Using a LARGE torx (don't remember measurement) will allow you to relieve the tension in the belts and let you put them on easier!


Thanks again for this DIY!
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Old Sun, Mar-13-2011, 05:24:23 AM   #32
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Default Re: The cooling system thread - overhaul DIY

could you have sent the radiator out to be cleaned vs replaced? I don't know if that can be done etc...
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Old Sun, Mar-13-2011, 08:20:51 AM   #33
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Default Re: The cooling system thread - overhaul DIY

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could you have sent the radiator out to be cleaned vs replaced? I don't know if that can be done etc...
The common fear on the boards is that the plastic end-tanks will begin to leak and fail after a certain amount of time so its not a matter of it being clean...but just that it is getting old and needs to be replaced. Anyways, the OEM radiator isn't THAT expensive...
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Old Sun, Mar-13-2011, 09:55:59 AM   #34
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Default Re: The cooling system thread - overhaul DIY

Yeah, BMW radiators have a LONG history of failure, and a new one is only $150. Makes sense to replace it to me!
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Old Sun, Mar-13-2011, 03:04:34 PM   #35
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Default Re: The cooling system thread - overhaul DIY

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Yeah, BMW radiators have a LONG history of failure, and a new one is only $150. Makes sense to replace it to me!
ian - where are you seeing $150?

i paid $298 for mine from Bimmerworld. Tischer is slightly higher.

please let me know!!! thanks
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Old Sun, Mar-13-2011, 03:24:02 PM   #36
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Default Re: The cooling system thread - overhaul DIY

Pelican has it for 287$. Curious as well.
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Old Sun, Mar-13-2011, 03:24:35 PM   #37
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Default Re: The cooling system thread - overhaul DIY

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ian - where are you seeing $150?

i paid $298 for mine from Bimmerworld. Tischer is slightly higher.

please let me know!!! thanks
Hmm, looks like prices have gone up since I did it!

I think this is still the cheapest way to do it, though:

http://www.turnermotorsport.com/p-21...or-e46-m3.aspx
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Old Sun, Mar-13-2011, 03:30:02 PM   #38
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Default Re: The cooling system thread - overhaul DIY

oem radiator alone = $313

http://www.turnermotorsport.com/p-13...-radiator.aspx

oem radiator alone from forum sponsor bimmerworld = $289.99

http://store.bimmerworld.com/oem-rep...ators-p36.aspx

i remember people talking about the mishimoto but saying that the openings on the radiator were not in the right places - see that hard to be since the hoses have some flex in them, but I can understand.

wish there were a cheaper alternative.
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Old Sun, Mar-13-2011, 03:52:37 PM   #39
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Default Re: The cooling system thread - overhaul DIY

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Originally Posted by IHatePosers View Post
oem radiator alone = $313

http://www.turnermotorsport.com/p-13...-radiator.aspx

oem radiator alone from forum sponsor bimmerworld = $289.99

http://store.bimmerworld.com/oem-rep...ators-p36.aspx

i remember people talking about the mishimoto but saying that the openings on the radiator were not in the right places - see that hard to be since the hoses have some flex in them, but I can understand.

wish there were a cheaper alternative.
Is turner no longer a sponsor on here? The rad alone may be cheaper, but if you're doing the cooling system, buying it piece by piece is more expensive, more work, and you might miss something (random o-ring, etc).
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Old Sun, Mar-13-2011, 03:56:24 PM   #40
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Default Re: The cooling system thread - overhaul DIY

Like Ian pointed out, I think the TMS package is one of the best ways to replace the whole system.

On the topic of radiator longevity, mine actually looked to be in good condition when I removed it, aside from being dirty. I have a feeling the the life span of plastic and rubber components are significantly increased when the car is garage kept. In the end, I would still always recommend replacing it a little early. The chance of damaging something more expensive is not worth the risk.
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Discussing The cooling system thread - overhaul DIY 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)