Help: Cost of Overhauling E46 Cooling System

Help: Cost of Overhauling E46 Cooling System

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drophead

Original Poster:

1,056 posts

157 months

Tuesday 16th December 2014
quotequote all
Well known topic among high-mileage e46 owners!

105,000 mile 325ti with a bowed radiator and a weeping expansion tank. Think it's time to get the cooling system overhauled!

My question is what are the main parts that need replacement after 100,000 miles?

Also, how much is this gonna cost me?!

Apart from the cooling system, the tired sport suspension, bushes and window seals, it runs like a dream. biggrin

8Tech

2,136 posts

198 months

Tuesday 16th December 2014
quotequote all
Radiator, pump and belts should sort the cooling system.

Powerflex bushes on the front lower arms and front of the rear trailing arms should sort the bushes.

Loads of options for the suspension but I would not go cheap coilover kit. Either get a very good coilover kit or just new shocks and maybe Eibach springs, suspension sorted.

drophead

Original Poster:

1,056 posts

157 months

Tuesday 16th December 2014
quotequote all
8Tech said:
Radiator, pump and belts should sort the cooling system.

Powerflex bushes on the front lower arms and front of the rear trailing arms should sort the bushes.

Loads of options for the suspension but I would not go cheap coilover kit. Either get a very good coilover kit or just new shocks and maybe Eibach springs, suspension sorted.
Ta for the information, 8Tech. beer

andyiley

9,197 posts

152 months

Tuesday 16th December 2014
quotequote all
Just to add my experience to the above DO NOT FIT CHEAP COILOVERS!

Spax sets are about £650 & well worth it with adjustable damping also.

helix402

7,857 posts

182 months

Wednesday 17th December 2014
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+Thermostat.

andyiley

9,197 posts

152 months

Wednesday 17th December 2014
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Also make sure you get a metal pump, not plastic.

essayer

9,057 posts

194 months

Wednesday 17th December 2014
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May as well do the top hose while you're there...

helix402

7,857 posts

182 months

Wednesday 17th December 2014
quotequote all
essayer said:
May as well do the top hose while you're there...
Indeed, they often get a hairline crack on removal.

SuperHangOn

3,486 posts

153 months

Wednesday 17th December 2014
quotequote all
Just did this job on my E39, must be very similar price wise.

Stat £75 (mine was built into the housing with a sensor so not possible to change independently)
Rad £140
A/c & aux belts about £40
Water pump £75
Viscous fan £65
Expansion tank £30
Top & bottom hoses £30
Anti-freeze, the BMW stuff was a mental price so I used ECP pre-mixed stuff, about £25.

I paid my mechanic £150 to fit so just over £600 all in. I bought from the sellers motormec and c3bmw on ebay who were very good, main parts were BEHR and smaller bits Meyle.






Edited by SuperHangOn on Wednesday 17th December 16:01