E90Post
 


Coby Wheel
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 Reliability (rod bearing problems?)



Reply
 
Thread Tools Search this Thread
      07-15-2018, 06:05 PM   #243
Dsinewave
New Member
3
Rep
8
Posts

Drives: E92 335i
Join Date: Jun 2018
Location: Australia

iTrader: (0)

I was preparing the car for an MHD tune by finally upgrading to fully FBO, with the parts I mentioned a few posts ago. (And I have a DV+ diverter valve too, I forgot to mention)
The downpipe had been fitted literally the day before and I was out taking it for a run to see how all the new parts were working, and to let the ECU adapt.

The car had never felt better, or pulled harder. It was just about perfect.

Then in about 10 seconds the oil temp went from 120 to 170 degrees (Celsius as I’m in Australia), I immediately backed off to 80kmh to let it cool down. 5 seconds later I heard a knocking noise for a couple of seconds, the DCT went into neutral by itself and the engine shut off.
It could not be restarted.
I had no indication whatsoever of its imminent demise. No temp warning on the dash, no gear symbol indicating an issue with the gearbox or anything at all.
It had never run rough or had any issues at all.

I had installed a complete cooling system refresh a month before as I had a small leak from water pump and radiator. Replaced with OEM pump, all new hoses and a CSF radiator.

I love this car as it is spectacular in what I require it to do. It’s my daily, I take it for long trips interstate, and enjoy it every day. It has never been anything less than fantastic since I bought it.

Although now I certainly am hesitant to go to Pure stage 2 as I was intending.

I will have to build an engine with a closed deck and forged internals.

Last edited by Dsinewave; 07-19-2018 at 01:09 AM.. Reason: Mistakenly said US engine builders required my engine to be sent to the US
Appreciate 1
      07-16-2018, 12:52 AM   #244
Dsinewave
New Member
3
Rep
8
Posts

Drives: E92 335i
Join Date: Jun 2018
Location: Australia

iTrader: (0)

Attached Images
 
Appreciate 0
      07-16-2018, 11:22 AM   #245
Pladi
Lieutenant Colonel
Pladi's Avatar
Canada
717
Rep
1,753
Posts

Drives: 2011 335i xdrive
Join Date: Nov 2017
Location: Waterloo, ON Canada

iTrader: (0)

wow thank you for sharing. Looks like you are better off buying a used engine. In North America You can find one for about 3500 dollars. Rebuilding will be more costly and not worth it in my opinion.

So Multiple bearings failed because of shavings from one bearing.. We still cant say why that happened. That oil should have been sent to lab to check for fuel/coolant contamination. The oil would have obv been contaminated with metal so that wont tell us much but if you detect fuel or coolant it could have been the issue.
Appreciate 0
      07-18-2018, 10:04 AM   #246
Bigugly
sheesh!
Bigugly's Avatar
United_States
14
Rep
195
Posts

Drives: 2015 M4
Join Date: Apr 2012
Location: Houston

iTrader: (2)

Quote:
Originally Posted by Dsinewave View Post
ABR required me to send my engine to the US - which seemed a bit excessive.

We've not required this, ever. You simply can pay the core charge if you are out of the country (which we typically option for, as shipping is too much back/forth)
Not sure where you got this information from, as I'm the one that responds to all engine related emails.
Appreciate 0
      07-19-2018, 01:00 AM   #247
Dsinewave
New Member
3
Rep
8
Posts

Drives: E92 335i
Join Date: Jun 2018
Location: Australia

iTrader: (0)

My apologies! I was in communication with MMP and assumed that any US builder would need the entire engine, as some parts are re used in the build.

I did not mean to spread rumours or misinformation.

Thanks for your clarification, as a built engine with closed deck and forged internals would be an awesome option for me. I’d certainly be happy to pay a core charge.
Appreciate 0
      07-19-2018, 10:29 AM   #248
9krpmrx8
Clean is the new cool, keep it that way.
9krpmrx8's Avatar
808
Rep
1,683
Posts

Drives: 11' Alpine White 335i Sedan
Join Date: Jan 2016
Location: San Antonio, Texas

iTrader: (0)

Does MMP even build their own engines or do they outsource? I sure as hell would not use anyone who hasn't built a bunch of them.
__________________
Appreciate 0
      07-20-2018, 08:40 AM   #249
Bigugly
sheesh!
Bigugly's Avatar
United_States
14
Rep
195
Posts

Drives: 2015 M4
Join Date: Apr 2012
Location: Houston

iTrader: (2)

Quote:
Originally Posted by Dsinewave View Post
My apologies! I was in communication with MMP and assumed that any US builder would need the entire engine, as some parts are re used in the build.

I did not mean to spread rumours or misinformation.

Thanks for your clarification, as a built engine with closed deck and forged internals would be an awesome option for me. I’d certainly be happy to pay a core charge.
No worries at all. ABR can do whatever you need- just let us know. We have 6? N55's in process right now- Bearings are on backorder which is killing our N54/N55 production. We've been waiting for 4 months now :/

Quote:
Originally Posted by 9krpmrx8 View Post
Does MMP even build their own engines or do they outsource? I sure as hell would not use anyone who hasn't built a bunch of them.
Outsourced.
Appreciate 0
      07-20-2018, 09:02 AM   #250
weehe126
Brigadier General
1156
Rep
3,179
Posts

Drives: 2017 340i
Join Date: Apr 2014
Location: San Antonio

iTrader: (2)

Quote:
Originally Posted by Bigugly View Post
Outsourced.
That would actually make me feel better about going with them lol.
Appreciate 0
      07-20-2018, 09:06 AM   #251
9krpmrx8
Clean is the new cool, keep it that way.
9krpmrx8's Avatar
808
Rep
1,683
Posts

Drives: 11' Alpine White 335i Sedan
Join Date: Jan 2016
Location: San Antonio, Texas

iTrader: (0)

Yeah that is what I figured. I recall they stole the pictures they use on their site from Motiv so I figured they didn't rebuild them in house if they had to steal pics.
__________________
Appreciate 0
      07-20-2018, 03:19 PM   #252
katatonia
Private First Class
katatonia's Avatar
Canada
43
Rep
151
Posts

Drives: 2011 e92 335xi 6mt
Join Date: Apr 2016
Location: Victoria BC

iTrader: (0)

Noob question but what do you typically do if your engine completely shits the bed? Do you have to source a used n55 yourself or do indie shops know how to do this? What does it cost to do a full engine replacement aside from the cost of the engine?
Appreciate 0
      07-20-2018, 04:03 PM   #253
9krpmrx8
Clean is the new cool, keep it that way.
9krpmrx8's Avatar
808
Rep
1,683
Posts

Drives: 11' Alpine White 335i Sedan
Join Date: Jan 2016
Location: San Antonio, Texas

iTrader: (0)

It depends, not every shop can rebuild engines. Typically the most cost effective route is to install a used engine. Install cost also vary depending upon location.
__________________
Appreciate 0
      07-20-2018, 05:48 PM   #254
katatonia
Private First Class
katatonia's Avatar
Canada
43
Rep
151
Posts

Drives: 2011 e92 335xi 6mt
Join Date: Apr 2016
Location: Victoria BC

iTrader: (0)

Where do you typically source a used engine?
Appreciate 0
      07-23-2018, 01:04 PM   #255
9krpmrx8
Clean is the new cool, keep it that way.
9krpmrx8's Avatar
808
Rep
1,683
Posts

Drives: 11' Alpine White 335i Sedan
Join Date: Jan 2016
Location: San Antonio, Texas

iTrader: (0)

http://ghassanauto.com/

or any salvage yard, I plan on buying a car at auction.
__________________
Appreciate 0
      07-23-2018, 03:34 PM   #256
SnapCoupe
BMW Portland
United_States
224
Rep
524
Posts

Drives: Z4M Coupe/E90 335i
Join Date: May 2015
Location: Portland, OR

iTrader: (0)

Quote:
Originally Posted by katatonia View Post
Noob question but what do you typically do if your engine completely shits the bed? Do you have to source a used n55 yourself or do indie shops know how to do this? What does it cost to do a full engine replacement aside from the cost of the engine?
It depends on what went wrong within the motor. When my rod bearings went out, I drove with the knock as the car drove fine and the knock was very hard to hear. Lesson learned, as this meant I warped my crank journal and therefore lost my opportunity to swap in new bearings/rebuild the motor in a cost effective way. My used motor options ranged from 50-85k miles and were between $5,000 and $6,500 a pop. These motors came with anything from no warranty at all, to a parts only warranty, to a parts and labor warranty for up to 90 days. The descriptions on the motors also didn't specifically say what they included with them. On top of all of this they were all 2011 model year motors, so there was the oddball chance that I could spin another bearing.

With all of this in mind, I went with a brand new N55 from BMW. It came with everything except the turbo, HPFP, and a few other accessories. I was able to get it at cost for around 11k with a 2 year unlimited mileage BMW factory warranty. I figured considering I was going to hold on to the car, this was the best route to go down.
__________________
2011 335i N55/6MT/M-Sport
MHD Stage 2+, VRSF Downpipe, VRSF 7" FMIC, BMS Intake, BMS Chargepipe, Performance Exhaust Mod, F10 550i Clutch, BMS CDV, BMW Performance SSK, M3 Control Arms, ST Coilovers, Apex ARC-8 wheels, Michelin PS4S
Appreciate 0
      07-23-2018, 05:57 PM   #257
9krpmrx8
Clean is the new cool, keep it that way.
9krpmrx8's Avatar
808
Rep
1,683
Posts

Drives: 11' Alpine White 335i Sedan
Join Date: Jan 2016
Location: San Antonio, Texas

iTrader: (0)

Damn, that is one hell of an investment.
__________________
Appreciate 0
      07-23-2018, 07:44 PM   #258
SnapCoupe
BMW Portland
United_States
224
Rep
524
Posts

Drives: Z4M Coupe/E90 335i
Join Date: May 2015
Location: Portland, OR

iTrader: (0)

Quote:
Originally Posted by 9krpmrx8 View Post
Damn, that is one hell of an investment.
Yeah, tell me about it...

If it was any other E90 or if the circumstances were even slightly different I probably wouldn't have done it. Though now I have a pretty near to brand new car with a warranty on the scary stuff for the next two years. I enjoy the hell out of the car for a daily too, so I don't have too much guilt hanging over my head for how much I have invested in the damn thing.
__________________
2011 335i N55/6MT/M-Sport
MHD Stage 2+, VRSF Downpipe, VRSF 7" FMIC, BMS Intake, BMS Chargepipe, Performance Exhaust Mod, F10 550i Clutch, BMS CDV, BMW Performance SSK, M3 Control Arms, ST Coilovers, Apex ARC-8 wheels, Michelin PS4S
Appreciate 1
9krpmrx8808.00
      07-23-2018, 11:43 PM   #259
MTK24
Lieutenant
MTK24's Avatar
No_Country
485
Rep
599
Posts

Drives: 2011 335I X Drive
Join Date: Nov 2017
Location: Seattle

iTrader: (0)

Quote:
Originally Posted by SnapCoupe View Post
Quote:
Originally Posted by katatonia View Post
Noob question but what do you typically do if your engine completely shits the bed? Do you have to source a used n55 yourself or do indie shops know how to do this? What does it cost to do a full engine replacement aside from the cost of the engine?
It depends on what went wrong within the motor. When my rod bearings went out, I drove with the knock as the car drove fine and the knock was very hard to hear. Lesson learned, as this meant I warped my crank journal and therefore lost my opportunity to swap in new bearings/rebuild the motor in a cost effective way. My used motor options ranged from 50-85k miles and were between $5,000 and $6,500 a pop. These motors came with anything from no warranty at all, to a parts only warranty, to a parts and labor warranty for up to 90 days. The descriptions on the motors also didn't specifically say what they included with them. On top of all of this they were all 2011 model year motors, so there was the oddball chance that I could spin another bearing.

With all of this in mind, I went with a brand new N55 from BMW. It came with everything except the turbo, HPFP, and a few other accessories. I was able to get it at cost for around 11k with a 2 year unlimited mileage BMW factory warranty. I figured considering I was going to hold on to the car, this was the best route to go down.
You dropped 11k for a N55 engine and a HPFP?




Sorry but with the depreciation of these cars I would not spend more than 5-6k max on an N55 engine. If my engine went bad I would just buy another 335i
__________________
Vermillion Red
Appreciate 0
      07-24-2018, 08:20 AM   #260
Pladi
Lieutenant Colonel
Pladi's Avatar
Canada
717
Rep
1,753
Posts

Drives: 2011 335i xdrive
Join Date: Nov 2017
Location: Waterloo, ON Canada

iTrader: (0)

Quote:
Originally Posted by Vampire335i View Post
You dropped 11k for a N55 engine and a HPFP?




Sorry but with the depreciation of these cars I would not spend more than 5-6k max on an N55 engine. If my engine went bad I would just buy another 335i
He got a brand new engine.. So thats not bad. What i think is bad, he started tuning it right away with MHD beta maps lool
Appreciate 0
      07-24-2018, 10:58 AM   #261
SnapCoupe
BMW Portland
United_States
224
Rep
524
Posts

Drives: Z4M Coupe/E90 335i
Join Date: May 2015
Location: Portland, OR

iTrader: (0)

Quote:
Originally Posted by Vampire335i View Post
You dropped 11k for a N55 engine and a HPFP?




Sorry but with the depreciation of these cars I would not spend more than 5-6k max on an N55 engine. If my engine went bad I would just buy another 335i
I wish it came with a new HPFP. It still has long cranks on cold starts even with the new motor. Though, like I said, if it was any other E90 I probably wouldn't have done it, as I was looking for this particular spec for around 6 months before purchasing. Plus, I spent around 3k out the gate in maintenance and mods right before the motor went. I started down the rabbit hole and now I just have to keep going I guess.

Quote:
Originally Posted by Pladi View Post
He got a brand new engine.. So thats not bad. What i think is bad, he started tuning it right away with MHD beta maps lool
Eh, I broke in the engine with 1200 miles on the stock tune before playing with the beta maps. It's not like they are/were unsafe in anyway, as plenty of people were running them with no mechanical issues. Plus, the motor is under a warranty for 2 years.
__________________
2011 335i N55/6MT/M-Sport
MHD Stage 2+, VRSF Downpipe, VRSF 7" FMIC, BMS Intake, BMS Chargepipe, Performance Exhaust Mod, F10 550i Clutch, BMS CDV, BMW Performance SSK, M3 Control Arms, ST Coilovers, Apex ARC-8 wheels, Michelin PS4S
Appreciate 1
9krpmrx8808.00
      08-22-2018, 07:43 PM   #262
Bours
Lieutenant Colonel
Canada
165
Rep
1,700
Posts

Drives: 2011 335i x-drive LCI sedan
Join Date: Nov 2014
Location: Montreal

iTrader: (0)

UPDATE : my engine spun a bearing as some ppl know....my car is at MMP getting rebuit with ceramic coated main bearings., forged rods, forged pistons, and full cleaning of the head. + new seals and gasket...

will get the engine back in 2 weeks and the car ready in three...

the whole process took 3-4 months....i hope its worth it since i have pure stage 2 fbo on meth @
Appreciate 0
      08-22-2018, 09:40 PM   #263
Xdrive35i2014
Second Lieutenant
56
Rep
254
Posts

Drives: X1 35I
Join Date: May 2016
Location: Canada

iTrader: (0)

Quote:
Originally Posted by Bours View Post
UPDATE : my engine spun a bearing as some ppl know....my car is at MMP getting rebuit with ceramic coated main bearings., forged rods, forged pistons, and full cleaning of the head. + new seals and gasket...

will get the engine back in 2 weeks and the car ready in three...

the whole process took 3-4 months....i hope its worth it since i have pure stage 2 fbo on meth @
Did you get your head ported as well? How much did that all cost?
Appreciate 0
      08-23-2018, 12:38 AM   #264
MTK24
Lieutenant
MTK24's Avatar
No_Country
485
Rep
599
Posts

Drives: 2011 335I X Drive
Join Date: Nov 2017
Location: Seattle

iTrader: (0)

Quote:
Originally Posted by Bours View Post
UPDATE : my engine spun a bearing as some ppl know....my car is at MMP getting rebuit with ceramic coated main bearings., forged rods, forged pistons, and full cleaning of the head. + new seals and gasket...

will get the engine back in 2 weeks and the car ready in three...

the whole process took 3-4 months....i hope its worth it since i have pure stage 2 fbo on meth @
How much did the rebuild cost?
__________________
Vermillion Red
Appreciate 0
Reply

Bookmarks

Tags
n55, rod bearing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 05:32 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST