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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-18-2018, 01:57 PM
SneakyMofo SneakyMofo is offline
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Preventive maintenance help!

Hi.
Atm I am thinking about doing some preventive maintanance on my cooling system. My car is a E46 330i 2004 model, which has run for 120 000 miles on OE.

I am doing the renewal based on this thread; http://forum.e46fanatics.com/showthread.php?t=914109

Which means I will change;

Radiator
Expansion Tank
Expansion Tank Cap
Water Pump
Radiator Hose Lower
Radiator Hose Upper
Expansion Tank to Pipe Lower Hose (VERY important)
Thermostat
Radiator Fan Switch
BMW Coolant Temp Sensor
Water Pump Pulley
URO Aluminum
Coolant drain crush washer at engine-block
Water pump pulley bolts (You can reuse these if you are careful)
Belt Tensioner Pulley (Main central pulley)
Alternator Deflector Pulley
Coolant

The problem that I am having, is if it's necessary to change the radiator, the pulleys and the return hose; 11531436410.
Are all these things in the list really necessary?

I was also wondering if you guys are using torque wrenches, and what to recommend.

Best regards
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  #2  
Old 01-18-2018, 03:18 PM
MySTify MySTify is offline
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If the switch or sensor still works... leave it be.

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  #3  
Old 01-18-2018, 05:55 PM
98m3s2k 98m3s2k is offline
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If you are already spending that much money for the rest of the parts you might as well change fan switch and temp sensor. Why wouldn't you? Also as for torque wtenches I recommend Snap on or Armstrong. I use both as an aircraft mechanic and couldn't be happier. I believe cdi torque wrenches are decent also. Keep in mind if you buy parts from fcpeuro they have a lifetime warranty on the parts. Can come in handy.

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Last edited by 98m3s2k; 01-18-2018 at 05:56 PM.
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  #4  
Old 01-18-2018, 07:01 PM
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smolck smolck is offline
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I've fixed more BMWs than I can count and never use torque wrenches for most things unless torque is super important. But I know what to make tight and what not to make as tight (I.e. Water pump bolts vs lug nuts). I noticed URO something on your list. My opinion and experience, URO anything sucks.
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  #5  
Old 01-18-2018, 07:14 PM
98m3s2k 98m3s2k is offline
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Well I'm glad you have fixed many BMWs and you know what and how tight to get something. But op asked for recommendations for torque wrentches. By the way come torque the two halves of an aircraft wheel assy and gaurantee you will be 50 inch pounds over or under with that method. Just so it's noted I'm not trying to be a dick or trying to call you out. Your method works as good as any as I have done that too but if someone hasn't worked on anything mechanical before they may not know how tight or not too tight to get something.


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Last edited by 98m3s2k; 01-18-2018 at 07:17 PM.
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  #6  
Old 01-19-2018, 06:00 AM
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Aaustins14 Aaustins14 is offline
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Yea agreed that a torque wrench isnít very necessary for this job. There are only a few things that are bolted on. All the hoses have connections. The expansion tank as well. The only thing you will be bolting on will be water pump, pulleys, and the thermostat housing.

I did the job without a torque wrench.

I also agree that if you are already plan to replace everything, do it all.

98m3s2k, OP did ask if we are using torque wrenches. So we are giving an honest answer.

For this job it isnít necessary.


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  #7  
Old 01-19-2018, 07:17 AM
98m3s2k 98m3s2k is offline
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Fair enough Austins14.

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  #8  
Old 01-19-2018, 08:22 AM
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floydarogers floydarogers is offline
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The radiator, expansion tank, and hoses are the most important. The sensors and caps and stuff not so much. Even the water pump is not as important as those three.
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  #9  
Old 01-19-2018, 08:51 AM
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smolck smolck is offline
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Quote:
Originally Posted by 98m3s2k View Post
Well I'm glad you have fixed many BMWs and you know what and how tight to get something. But op asked for recommendations for torque wrentches. By the way come torque the two halves of an aircraft wheel assy and gaurantee you will be 50 inch pounds over or under with that method. Just so it's noted I'm not trying to be a dick or trying to call you out. Your method works as good as any as I have done that too but if someone hasn't worked on anything mechanical before they may not know how tight or not too tight to get something.


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Thankfully its an E46 and not a Boeing 747......A torque wrench is fine if he wants to use one. I never said he shouldn't nor was I attacking you. I didn't even mention your post in my response. Ease up captain. It's just a car forum, and I wasnt challenging your manhood.
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now, go burn your Man Card, and buy yourself a Camry....

Last edited by smolck; 01-19-2018 at 08:53 AM.
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  #10  
Old 01-19-2018, 09:20 AM
98m3s2k 98m3s2k is offline
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Quote:
Originally Posted by smolck View Post
Thankfully its an E46 and not a Boeing 747......A torque wrench is fine if he wants to use one. I never said he shouldn't nor was I attacking you. I didn't even mention your post in my response. Ease up captain. It's just a car forum, and I wasnt challenging your manhood.
Like I said. Wasn't trying to be a dick. Sorry if it came off that way. My apologies.

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  #11  
Old 01-20-2018, 06:21 AM
SneakyMofo SneakyMofo is offline
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Thanks a bunch for the response guys!
I meant the torque wrench for generally purposes, since I will do alot of DIY on this car.
As of now I am looking at this fully renewal set; https://www.oembimmerparts.com/BMW-E...astrkit-vl.htm
I see that all the parts included are not Genuine BMW, but does these keep the same quality?
I am really looking for an all inclusive set. The only problem is that I am a bit low on cash atm, so I am wondering to set of the pulleys and belts for next month. But do all the components that has to do with the cooling.

Would you advice using threadlocking on anything, and silicone spray on the ends of hoses?

But everywhere I see, there is no return hose included in the sets, are these not necessary to replace?

How long do you think this will take to do for a novice-med DIY dude?

Last edited by SneakyMofo; 01-20-2018 at 07:27 AM.
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  #12  
Old 01-20-2018, 08:38 AM
lincolnshibuya lincolnshibuya is offline
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I bought all my torque wrenches from Harbor Freight, you can buy each size for $10 with a coupon. They are really not bad, I have the 1/4", 3/8", 1/2" and the most expensive 3/4" drive. The 3/4" drive is for torquing the axle since they go over 200 ft/lbs (the 1/2" is only 150 ft/lbs)
I only use torque wrenches for lug nuts/bolts, valve covers, oil and transmission parts/components (such as valve body) and axle nuts. I used to do it on most stuff before but it's mostly by feel over time (in german "gutemteit") since in reality there's no space for that torque wrench..

the OEM radiator on mine lasted 185k before it developed a tiny crack at the neck (maybe caused by my mounts that broke the upper hose... too much tension), it's a small leak but it's due anyway. Not really sure if 120k is time for that..

btw, I got good experience buying from FCP euro.. get your parts there with lifetime replacement. I have issues with shipping before (missing items due to UPS mishandling it) and their customer service took care of it really fast.


https://www.facebook.com/diybmwe46/

Last edited by lincolnshibuya; 01-20-2018 at 08:42 AM.
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  #13  
Old 01-20-2018, 10:10 AM
SneakyMofo SneakyMofo is offline
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Quote:
Originally Posted by lincolnshibuya View Post
I bought all my torque wrenches from Harbor Freight, you can buy each size for $10 with a coupon. They are really not bad, I have the 1/4", 3/8", 1/2" and the most expensive 3/4" drive. The 3/4" drive is for torquing the axle since they go over 200 ft/lbs (the 1/2" is only 150 ft/lbs)
I only use torque wrenches for lug nuts/bolts, valve covers, oil and transmission parts/components (such as valve body) and axle nuts. I used to do it on most stuff before but it's mostly by feel over time (in german "gutemteit") since in reality there's no space for that torque wrench..

the OEM radiator on mine lasted 185k before it developed a tiny crack at the neck (maybe caused by my mounts that broke the upper hose... too much tension), it's a small leak but it's due anyway. Not really sure if 120k is time for that..

btw, I got good experience buying from FCP euro.. get your parts there with lifetime replacement. I have issues with shipping before (missing items due to UPS mishandling it) and their customer service took care of it really fast.


https://www.facebook.com/diybmwe46/
Wow, this site seems utterly amazing, instantly found a kit; https://www.fcpeuro.com/products/bmw...-mangocoolkit1

It got all the components which I am looking for atm, and it's the cheapest yet, thank you so much!
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  #14  
Old 01-20-2018, 10:11 AM
SneakyMofo SneakyMofo is offline
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Still got two questions though.
Would you advice using threadlocking on anything, and silicone spray on the ends of hoses?
Everywhere I see, there is no return hose included in the sets, are these not necessary to replace?
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  #15  
Old 01-20-2018, 10:48 AM
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smolck smolck is offline
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Quote:
Originally Posted by SneakyMofo View Post
Still got two questions though.
Would you advice using threadlocking on anything, and silicone spray on the ends of hoses?
Everywhere I see, there is no return hose included in the sets, are these not necessary to replace?
Threadlocker isn't required on anything in the cooling system. Short of flywheel bolts, no reason for it and it makes life more difficult. Silicone spray isn't something I use, but you can i you want. I've seen guys use anti-seize to make removal of things easier, but I don't use it.

The return hose can be purchase separately. Go to realoem.com and put in the last 7 digits of your vin # and get the part numbers you need.
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Quote:
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now, go burn your Man Card, and buy yourself a Camry....

Last edited by smolck; 01-20-2018 at 10:50 AM.
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  #16  
Old 01-20-2018, 11:08 AM
FredoinSF FredoinSF is offline
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Quote:
Originally Posted by SneakyMofo View Post
Wow, this site seems utterly amazing, instantly found a kit; https://www.fcpeuro.com/products/bmw...-mangocoolkit1

It got all the components which I am looking for atm, and it's the cheapest yet, thank you so much!
Good investment, and FCP Euro has been my go to place for parts since finding out about them and their replacement policy a couple of years ago. That policy is low risk for them, but nice for those of us who plan on hanging on to our cars for the long haul.
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  #17  
Old 01-21-2018, 06:07 AM
SneakyMofo SneakyMofo is offline
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Thank you so much for the help guys, parts ordered!

I have not yet changed the fluid in my man trans and diff yet, does these fit properly?
https://www.fcpeuro.com/products/bmw...er-07512293972
https://www.fcpeuro.com/products/man...ne-83522-50204
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  #18  
Old 01-21-2018, 07:10 AM
FredoinSF FredoinSF is offline
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Itís a manual? Nice!
Yes, redline is what Iíve been using in my BMWís for over 20 years. Redline also make gear oil for diff, but canít go wrong with bmw stuff.


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Current:
2018 540ix
2015 428i convertible
2013 Cooper S
2007 650i - 6 speed
2002 330ci convertible - 5 speed



Past:
2012 X5 Diesel
2012 Countryman S All4 - 6 speed
2006 Cooper S - 6 speed
2006 330i - 6 speed
1997 328is - 5 speed
1991 318is - 5 speed
1988 635csi - 5 speed
1988 325i convertible - 5 speed
1969 2002 with tii and 5 speed conversions
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  #19  
Old 01-21-2018, 07:18 AM
SneakyMofo SneakyMofo is offline
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Quote:
Originally Posted by FredoinSF View Post
Itís a manual? Nice!
Yes, redline is what Iíve been using in my BMWís for over 20 years. Redline also make gear oil for diff, but canít go wrong with bmw stuff.


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Yeah, got the 6 speed manual
I was thinking more of the viscosity of the oils, if it were okay. But maybe they're not that important?
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