04-23-2024, 09:44 AM | #1 |
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N55 OFHG Replacment
Next week my 435i goes in to have it's OFHG replaced. How much should I worry about an engine seizure afterwards? Lol.
Car has 44k miles on the clock. Thr gasket isn't leaking yet but I'm doing the mosselman T STAT so I figured I'd have it all done in one shot.
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04-23-2024, 09:57 AM | #2 |
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Depends how much you trust the shop to know exactly how to do it and torque everything to spec. Mine was butchered once at first, then redone the same day because it leaked immediately. It leaked again after two months, then again after two months, and yet again after two months. I then finally took it to a specialist (should have in the first place but I had warranty on the first job) who told me the bolts weren't torqued to spec and they were coming off from vibration. Finally it looks like it's fixed and done right, but the specialist shop also noticed glitter in the oil filter and I had to redo my rod bearings. Had I driven for 500 miles, the rods would have spun. I doubt the original shop even primed anything. All this because I decided to also do the gasket before it leaked, so it was fine before all this.
Lesson learned, pay the extra in labor to someone who actually knows what they are doing. |
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04-23-2024, 10:02 AM | #3 | |
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04-23-2024, 10:03 AM | #4 | |
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04-23-2024, 10:06 AM | #5 |
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Sad part was they were a BMW shop. That one instance of not owning up to a mistake just pissed me off enough to never return.
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04-23-2024, 10:50 AM | #6 |
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Highly recommend the Viton OFHG (so you never have to change it again). DuPont Viton is superior to the OE/OE-style rubber ones.
Turner might still carry it, or look for this Premium URO part: 11427537293PRM-URP Last edited by visionaut; 04-23-2024 at 01:38 PM.. Reason: viton.. citon. Lol |
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04-23-2024, 01:07 PM | #7 | |
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Haha
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04-23-2024, 01:08 PM | #8 |
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Or ELRING (They sell both types)
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04-23-2024, 01:42 PM | #9 | |
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"Why did he bring it in if he's so smart, he clearly doesn't respect us. We work on these cars for a living and know this very well." OR "What does that mean? Oh well." - Proceeds to not prime it or just take out a fuse and go oops. |
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04-23-2024, 02:54 PM | #10 | |
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04-23-2024, 09:07 PM | #11 |
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I don’t trust even the dealer to do work the correctly. Had an N55 oil pan gasket changed at the dealer under warranty and got my vehicle back with oil everywhere to include a pile of oil soaked rags stuffed in the drivers side fender liner forward of the strut tower. Other issues as well. Dealers are only as good as the techs they hire and it only takes one to not prime your oil system for you to have major issues. I’ve done this job myself several times (X3 35i with N55 with 175k miles and 2014 335i with 82k). Don’t use the Elring gasket between the housing and the oil thermostat housing as I’ve had it leak when the BMW one doesn’t. Have the manifold o rings on the intake ports done at the same time you do this. I recommend you DIY so you know the priming procedure was done correctly. Get ISTA and follow along with the detailed manual.
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04-24-2024, 04:56 AM | #12 | |
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04-25-2024, 06:49 AM | #13 |
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LMAO. I solid jinxed myself. It literally leaked the next day AGAIN. Cue a new post..pretty sure it's the cap. I hate these cars at times so much.
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04-25-2024, 06:57 AM | #14 |
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That definitely leaked at the cap.
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04-26-2024, 09:07 AM | #15 |
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I bet that isn’t the cap leaking but rather the Oil Thermostat housing to Oil Filter Housing. It’s part number 11428637820. Use the BMW one. Aftermarket gaskets have leaked both times I’ve tried them.
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04-26-2024, 09:57 AM | #16 | |
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I made a new thread: https://f30.bimmerpost.com/forums/sh....php?t=2099930 |
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04-26-2024, 10:29 AM | #17 | |
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Recommend you get a Viton gasket for that one too… |
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04-26-2024, 11:10 AM | #18 | |
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08-06-2024, 12:46 AM | #19 | |
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Sorry to hijack thread but this is good discussion and recent members posting. Im getting no EXTERNAL leaks after fixing my ofhg gaskets 7000 miles ago but oil is now mixing into my coolant really bad so it must be the internal part of the gasket? I torqued everything to spec too… Just drained my oil and dont think i see any evidence of coolant getting into the oil. Its oil getting into the coolant which is sludgy. I will work on OFHG when new gaskets arrive. Again… no external leak, oil in my coolant and sludgy in coolant reservoir. The gasket i used was Elring. I guess they are suck? Anyone have any ideas how this happened? What are the odds the internal part of the gasket failed? Really weird!!! Last edited by SlumsToMills; 08-06-2024 at 12:53 AM.. |
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08-25-2024, 02:35 PM | #20 | |
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08-25-2024, 02:37 PM | #21 |
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I've seen gaskets on jobber filters leak. Just take a look while the car is running.
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