[Jneal90]

so around a year ago the engine on my 335i spun a bearing and the day has finally come that I have sourced a new engine and have a garage to do the swap. My question is going from a my 2014 n55 sport package to a 2013 N55 out of a m sport edition are there any swaps that I need to do in order for this to work properly. I know that the turbo will need to be swapped due to the the EWG vs PWG , but is there anything else? Thanks for the help

[XutvJet]

I wouldn't do it. The 2013 N55 runs the old rod bearings that are more prone to spinning. At some point in 2014, BMW started using the S55 rod bearing in the N55s.

[Jneal90]

Originally Posted by XutvJet

I wouldn't do it. The 2013 N55 runs the old rod bearings that are more prone to spinning. At some point in 2014, BMW started using the S55 rod bearing in the N55s.

i plan to put new bearings into the motor before it goes in anyway. It will be getting new bearings (most likely VAC coated), new gaskets, and other odds and ends. I just could not pass up and entire running motor for $500

[thejeremyman9]

Originally Posted by Jneal90

so around a year ago the engine on my 335i spun a bearing and the day has finally come that I have sourced a new engine and have a garage to do the swap. My question is going from a my 2014 n55 sport package to a 2013 N55 out of a m sport edition are there any swaps that I need to do in order for this to work properly. I know that the turbo will need to be swapped due to the the EWG vs PWG , but is there anything else? Thanks for the help

Curious if you know the cause of the spun bearing? Miles on car and history of it?

In terms of your question, you might need to look into coding certain things like injectors, depending on differences between the engines. There may be some software changes needed in addition to any hardware swaps.

[Munchi435i]

I would source a 2014 or newer engine. I've read so many posts regarding random issues with model year 2013. Not to mention it has the smaller PWG turbo. If possible I'd look at the m235 engine or a m2(n55) engine.

[Boostedphil698]

Originally Posted by Jneal90

so around a year ago the engine on my 335i spun a bearing and the day has finally come that I have sourced a new engine and have a garage to do the swap. My question is going from a my 2014 n55 sport package to a 2013 N55 out of a m sport edition are there any swaps that I need to do in order for this to work properly. I know that the turbo will need to be swapped due to the the EWG vs PWG , but is there anything else? Thanks for the help

How'd you spin a rod in your old engine?

[Jneal90]

Originally Posted by 435i_Phil

How'd you spin a rod in your old engine?

Took the car in for an oil change and 2 days later noticed a little oil around the oil filter housing, wiped it down and carried on. Checked on it the next day and it was back so I took the car in to have the gasket replaced. Gasket was replaced and about a week later the engine seized on me driving home from work.

[Jneal90]

Originally Posted by thejeremyman9

Curious if you know the cause of the spun bearing? Miles on car and history of it?

In terms of your question, you might need to look into coding certain things like injectors, depending on differences between the engines. There may be some software changes needed in addition to any hardware swaps.

Took the car in for an oil change and 2 days later noticed a little oil around the oil filter housing, wiped it down and carried on. Checked on it the next day and it was back so I took the car in to have the gasket replaced. Gasket was replaced and about a week later the engine seized on me driving home from work. Hard around 97k. I’m the second owner so I don’t know the history before I had it. I bought it with 54k on it and had oil changed every 3500-4000 miles.

[Pussiwillow]

A lot of bearing failures after the ofhg replacement, I just changed mine and dumped oil down there and primed it per bmw and so far so good 1k miles later.
Made me nervous after hearing about it all, sorry for your experience with the problem.

[Boostedphil698]

Originally Posted by Jneal90

Took the car in for an oil change and 2 days later noticed a little oil around the oil filter housing, wiped it down and carried on. Checked on it the next day and it was back so I took the car in to have the gasket replaced. Gasket was replaced and about a week later the engine seized on me driving home from work.

That's why I think I may have the dealer do my OFHG when it's time. Kinda binds them to it, if my engine were to fail.

[thejeremyman9]

Originally Posted by 435i_Phil

That's why I think I may have the dealer do my OFHG when it's time. Kinda binds them to it, if my engine were to fail.

I have thought the same thing, but i think it would be very difficult to pin an engine failure on them from this service, especially if you are modded. They would probably blame the mods/tune, and you wouldn't really have any evidence except the timing.

I am wondering if OP tried anything similar with the shop that did the repair...

[Bl00DY F30]

Originally Posted by Pussiwillow

A lot of bearing failures after the ofhg replacement, I just changed mine and dumped oil down there and primed it per bmw and so far so good 1k miles later.
Made me nervous after hearing about it all, sorry for your experience with the problem.

Yeah wow when this happened to me I also heard a lot of bearings failing after a OFHG replacement This is oddly strange it happens right after the replacement.

[Boostedphil698]

Originally Posted by thejeremyman9

I have thought the same thing, but i think it would be very difficult to pin an engine failure on them from this service, especially if you are modded. They would probably blame the mods/tune, and you wouldn't really have any evidence except the timing.

I am wondering if OP tried anything similar with the shop that did the repair...

That's also true. Bearings only fail when starved of oil, or extreme detonation occurs. Considering the dealer never actually finds the true problem and just discards the engine, they'd probably blame a tune.

[XutvJet]

Originally Posted by Jneal90

Took the car in for an oil change and 2 days later noticed a little oil around the oil filter housing, wiped it down and carried on. Checked on it the next day and it was back so I took the car in to have the gasket replaced. Gasket was replaced and about a week later the engine seized on me driving home from work.

Was it a BMW dealer that did the OFHG replacement?

[Jneal90]

Originally Posted by thejeremyman9

I have thought the same thing, but i think it would be very difficult to pin an engine failure on them from this service, especially if you are modded. They would probably blame the mods/tune, and you wouldn't really have any evidence except the timing.

I am wondering if OP tried anything similar with the shop that did the repair...

Currently trying to work with them to cover the cost of my new to me engine. If it wasn't for living in a small town and knowing the owner and mechanic that worked on my vehicle I don't think that would be happening.

[Jneal90]

Originally Posted by XutvJet

Was it a BMW dealer that did the OFHG replacement?

No it was an independent shop that did it. My closest BMW dealer is 2.5 hours away versus this shop being 3 blocks from my house. The owner also races Porsche cars and has built a couple 3 series track cars in the past. So I trust him with his work versus the other shops in my area.