01-06-2019, 01:13 PM | #23 | |
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01-06-2019, 01:19 PM | #24 | ||
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01-06-2019, 03:03 PM | #26 |
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My assumption is that the intercooler core develops a small leak in it allowing fluid to leak over a span of time, it would be pretty hard to notice unless it was just dumping water in there. But again who knows, I'm just sharing what I've found from a buddies experience!
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01-06-2019, 04:40 PM | #27 |
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These Intercooler leaks have been popping up more and more lately jesus!
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01-06-2019, 05:13 PM | #28 |
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If you want to check for sure, removing cold side inlet pipe would be easiest
Still fair bit of work VRSF cold-side charge pipe DIY https://f80.bimmerpost.com/forums/sh....php?t=1544942 |
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01-06-2019, 05:22 PM | #29 | |
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01-06-2019, 08:15 PM | #30 |
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My charge reservoir emptied back in November and threw a code, refilled it and it hasn't drained yet. We pressure tested my whole system and found no leaks. I'm at a loss but now I think I'm just going to grab a CSF top mount for piece of mind.
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01-07-2019, 12:53 AM | #31 |
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The forge intercooler looks like a better engineered unit
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01-07-2019, 01:12 AM | #32 | |
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01-07-2019, 01:52 AM | #33 |
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Same problem on car of my friend. Intercooler damaged internally
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01-07-2019, 05:00 AM | #34 |
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01-07-2019, 05:40 AM | #35 | |
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01-07-2019, 08:48 AM | #36 | ||
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Anyways, I hope this thread does make the top intercooler more expensive because as of now they are ridiculously expensive. |
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01-07-2019, 03:55 PM | #38 |
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What did they replace? IC + tank or just the IC?
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01-07-2019, 06:22 PM | #39 | |
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Plenty of pics/info/data here https://www.forgemotorsport.com/BMW_...uct--1602.html Reality is nobody, not the forum vendors claiming they felt a noticeable difference, not even csf who make it, have released any data on the csf aftermarket coolers |
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01-07-2019, 06:48 PM | #40 |
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Had the same issue with the shop's M4, not sure what caused the leak (car was completely stock).
We have not had any issues since upgrading to the CSF cooler
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01-07-2019, 09:24 PM | #41 |
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Has anybody who has seen a failed charge cooler looked a bit deeper to possibly determine where the leak/failure is occurring inside the charge cooler? Does it have to do with the plastic end tanks (I would think not)? Something with the internal fin design? Where is the weak link in the OEM design and how did the aftermarket options (CSF or Forge) address this weak link?
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01-08-2019, 12:27 PM | #42 | |
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If that's not the case it could just be a weak fin pack inside the intercooler that weakens over time causing leaks. And many of the companies use thicker pieces of material for fins from what it looks like, it's like comparing a stock Intercooler core to a VRSF intercooler core, one is thin and brittle the other has more support, better material, thicker, etc.
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01-08-2019, 03:58 PM | #43 |
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The plastic end tanks are for air not water. The water would flow thru the metal radiator. The intercooler is basically just a radiator with enclosed air.
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01-08-2019, 08:29 PM | #44 |
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FWIW Sterling BMW in Newport Beach is not a "reputable" shop. Disconnected vacuum lines, missing lug nuts, broken bolts, and that's just on the M4.
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