Has anyone gotten walnut blast done on N55?

harkes · 05-12-2015, 09:53 PM

FYI...

Oil in the induction air = carbon build up - period!

I will have my engine cleaned with my next service.

Turbod · 05-12-2015, 11:05 PM

I just had mine blasted at 48,000 miles and I should have waited closer to 70,000 miles. I will not have it done again since I only plan to keep the car till around 100,000 miles.

MiamiM3 · 05-13-2015, 08:35 AM

From everything I have seen, the N55 is good until 100K or more. I have the BMS OCC and I only ever see a slight oil film in it. I got paranoid when I saw all the N54 engines coked up, so I bought the OCC for my N55 which was a waste of money.

HP_HOUND · 05-13-2015, 10:22 AM

Daniel at Lilly Automotive sent me a reply to my PM requesting to have him walnut blast my N55. When I first contacted him he told me that he hadn't done a N55 blasting yet. Today his message said he just blasted a N55 and it could have waited. He was saying that he recommends getting it done at 120k miles on the N55. Daniel is well know on the forum for the Florida members are is a highly recommended BMW mechanic.

proTUNING Freaks · 05-13-2015, 10:26 AM

N55 doesn't see nearly as much blowby as the N54. There's very little point in modifying the PCV system on the N55 or adding an oil catch can.

Herakles · 03-11-2018, 11:32 AM

Search function is good!

I have new Eldor coils and plugs for my 2011 335- with 36k miles- was about to do anwalnut blast as was thinking about also going with a dinan as after 3 years stock getting bored and if I don’t mod might look for a 2016340 or something else

Pladi · 03-12-2018, 01:28 PM

Its literally a NON issue with N55. How do i know ?

I removed my intake manifold for other maintenance. When i looked down in ot the valves they look very good. Had 80,000 KM at the time.

What oil you use its also a big indicator. LL-01 oil was approved for reducing deposits and sludge. Clean PCV is a clean intake. They clearly fixed this issue with N55. Probably broke something else but engine is cleaner..

Pladi · 03-12-2018, 01:30 PM

Quote:

Originally Posted by proTUNING Freaks

N55 doesn't see nearly as much blowby as the N54. There's very little point in modifying the PCV system on the N55 or adding an oil catch can.

I dont think that the blow by is any different but how they deal with blow by is different.

Unklejoe · 03-15-2018, 04:27 PM

For what it's worth, I have over 193,000 miles on my N55 and haven't had it walnut blasted, and probably never will at this point.

The car has been running with a Pure Stage 1 (+ tune) for the last ~100k miles, and it makes the same power as it always has, and seems to run fine.

While I'm sure there's some build-up, it doesn't seem to matter.

eninet · 08-27-2022, 04:51 PM

thanks guys…I am having low power/no boost & wondered about buildup (‘11 335i N55 lci w/PPK) thinking while I’m diagnosing 1/2 CEL I wud just do blasting…
dealer sticker in driver’s door jam says to do plugs @46k miles also…I’m at 50k now. I did call local Indy and asked about blasting & he just said N55 “does t need it”….he didn’t give/offer any reasoning. Ohhh… and he said it would be min 2hrs labor @ $120/hr to diag 2C57 code…😏

Welcome to NBA Jam · 08-27-2022, 10:14 PM

I'm at 140k with an OCC and haven't bothered to walnut blast it. My OCC is almost empty every oil change. It really is a non-issue. The crankcase vent design is very good at preventing buildup on valves.

ferocity02 · 09-03-2022, 01:19 PM

At 56K w/o OCC I had no build up on the valves.

My N54 at about that same mileage had bad carbon build up and went in for a walnut blast.

05-12-2015, 09:53 PM	#23
harkes Colonel 1117 Rep 2,418 Posts Drives: M135i, E39 M5, NSX and AE86 Join Date: Apr 2014 Location: Xiamen, China iTrader: (0)	FYI... Oil in the induction air = carbon build up - period! I will have my engine cleaned with my next service. Attached Images __________________ M135i 8AT PWG, MHD, Pure Stage2, WMI via Torqbyte CM5-LT, Custom tuned by PureBoost (A Dane in China) Last edited by harkes; 05-12-2015 at 09:59 PM..
	Appreciate 1 StradaRedlands6468.50 Quote

05-12-2015, 11:05 PM	#24
Turbod Major 400 Rep 1,210 Posts Drives: 2014 E84 X1 35i M Sport Join Date: Mar 2015 Location: Oregon iTrader: (0)	I just had mine blasted at 48,000 miles and I should have waited closer to 70,000 miles. I will not have it done again since I only plan to keep the car till around 100,000 miles. __________________ 2011 E92 335i \| 11.7@125 SOLD 2017 Camaro SS \| 12.7@114 SOLD 2019 Audi TT RS \| 10.5@130 SOLD 2020 F97 X3M \| 11.0@123 2023 G80 M3 xDrive
	Appreciate 0 Quote

05-13-2015, 08:35 AM	#25
MiamiM3 Second Lieutenant 32 Rep 205 Posts Drives: 2011 335i E90 AT M-Sport Join Date: May 2011 Location: Sacramento CA iTrader: (1) Garage List 2011 BMW 335i M-Sport [0.00]	From everything I have seen, the N55 is good until 100K or more. I have the BMS OCC and I only ever see a slight oil film in it. I got paranoid when I saw all the N54 engines coked up, so I bought the OCC for my N55 which was a waste of money.
	Appreciate 1 whyzee1251992.00 Quote

05-13-2015, 10:22 AM	#26
HP_HOUND Private First Class 23 Rep 159 Posts Drives: 2011 BMW 335i Join Date: Sep 2013 Location: Gainesville, Florida iTrader: (0)	Daniel at Lilly Automotive sent me a reply to my PM requesting to have him walnut blast my N55. When I first contacted him he told me that he hadn't done a N55 blasting yet. Today his message said he just blasted a N55 and it could have waited. He was saying that he recommends getting it done at 120k miles on the N55. Daniel is well know on the forum for the Florida members are is a highly recommended BMW mechanic.
	Appreciate 2 upsidedownfunnel2006.00 StradaRedlands6468.50 Quote

05-13-2015, 10:26 AM	#27
proTUNING Freaks 4568 Rep 1,859 Posts Drives: powered by bootmod3 Join Date: Oct 2014 Location: www.protuningfreaks.com \| www.bootmod3.com iTrader: (0)	N55 doesn't see nearly as much blowby as the N54. There's very little point in modifying the PCV system on the N55 or adding an oil catch can. __________________ YouTube Channel [NEW] \| Facebook User Group (20,000+ members) \| Tech Support Website \| Wiki \| FAQ \| iOS App \| Android App \| bootmod3 Web Sales Support Email: sales@protuningfreaks.com \| Tech Support Email: support@protuningfreaks.com
	Appreciate 0 Quote

03-11-2018, 11:32 AM	#28
Herakles Captain 264 Rep 839 Posts Drives: United States Join Date: Jan 2015 Location: Pa iTrader: (0)	Search function is good! I have new Eldor coils and plugs for my 2011 335- with 36k miles- was about to do anwalnut blast as was thinking about also going with a dinan as after 3 years stock getting bored and if I don’t mod might look for a 2016340 or something else
	Appreciate 0 Quote

03-12-2018, 01:28 PM	#29
Pladi Lieutenant Colonel 722 Rep 1,753 Posts Drives: 2011 335i xdrive Join Date: Nov 2017 Location: Waterloo, ON Canada iTrader: (0)	Its literally a NON issue with N55. How do i know ? I removed my intake manifold for other maintenance. When i looked down in ot the valves they look very good. Had 80,000 KM at the time. What oil you use its also a big indicator. LL-01 oil was approved for reducing deposits and sludge. Clean PCV is a clean intake. They clearly fixed this issue with N55. Probably broke something else but engine is cleaner..
	Appreciate 2 Krauzen6.50 StradaRedlands6468.50 Quote

03-15-2018, 04:27 PM	#31
Unklejoe Second Lieutenant 101 Rep 292 Posts Drives: 335i Join Date: Feb 2014 Location: South Jersey iTrader: (0)	For what it's worth, I have over 193,000 miles on my N55 and haven't had it walnut blasted, and probably never will at this point. The car has been running with a Pure Stage 1 (+ tune) for the last ~100k miles, and it makes the same power as it always has, and seems to run fine. While I'm sure there's some build-up, it doesn't seem to matter.
	Appreciate 2 Pladi721.50 Krauzen6.50 Quote

08-27-2022, 04:51 PM	#32
eninet New Member 3 Rep 12 Posts Drives: 2011 335i N55 Msport PPK Join Date: May 2022 Location: Cincy iTrader: (0)	thanks guys…I am having low power/no boost & wondered about buildup (‘11 335i N55 lci w/PPK) thinking while I’m diagnosing 1/2 CEL I wud just do blasting… dealer sticker in driver’s door jam says to do plugs @46k miles also…I’m at 50k now. I did call local Indy and asked about blasting & he just said N55 “does t need it”….he didn’t give/offer any reasoning. Ohhh… and he said it would be min 2hrs labor @ $120/hr to diag 2C57 code…😏
	Appreciate 1 StradaRedlands6468.50 Quote

08-27-2022, 10:14 PM	#33
Welcome to NBA Jam Is it the shoes!? 3893 Rep 5,111 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	I'm at 140k with an OCC and haven't bothered to walnut blast it. My OCC is almost empty every oil change. It really is a non-issue. The crankcase vent design is very good at preventing buildup on valves.
	Appreciate 0 Quote

09-03-2022, 01:19 PM	#34
ferocity02 Colonel 551 Rep 2,085 Posts Drives: 2013 135is Join Date: May 2014 Location: USA iTrader: (8)	At 56K w/o OCC I had no build up on the valves. My N54 at about that same mileage had bad carbon build up and went in for a walnut blast.
	Appreciate 0 Quote