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SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
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11-06-2020, 04:48 PM | #1 |
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Drives: 2003 BMW Z4 3.0i M-Sport
Join Date: Jun 2020
Location: Bay Area, CA
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Cooling System Refresh Supplies
Hello everyone! I've got an '03 Z4 with the 3ltr M54 engine, and I'm looking at refreshing and upgrading the cooling system in it. Nothing wrong with the car really, it's more preventative than anything. Does anybody have recommendations for aluminum radiators and silicone hoses? I know the hoses won't do anything but I figure if I have to do them anyways I might as well do silicone for the bling factor.
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11-12-2020, 10:42 AM | #2 |
Monkey Marshall
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I have a CSF Radiator, BMW radiator hoses, and a Stewart/EMS High flow water pump. If you're looking to track the car or want to upgrade the car down the road that would potentially cause the engine to create more heat, do this. When I was at the track I didn't see temps over 200F.
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11-12-2020, 12:11 PM | #3 | |
Captain
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Stewart pump flows more, but is also less likely to implode vs stock because the stock is plastic that can breakdown over time. |
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02-03-2021, 07:55 PM | #4 |
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Don't forget the expansion tank in that list. I also have an 03 and recently replaced my water pump (GEHA) and engine thermostat (wahler), performed a radiator chemical cleaning with Liquimoly, and flushed the radiator and refilled with BMW coolant. I regret not replacing the expansion tank as part of this job after seeing how easy it would have been to swap. There are a number of good DIY step-by-steps on this forum. Good luck and let us know if you have any questions.
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02-04-2021, 09:44 AM | #5 | |
Colonel
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02-05-2021, 11:21 AM | #6 |
Captain
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I now have a spare expansion tank added to my list of parts on hand at all times. Sneaky bugger tank last 15 years and then cracked
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