n55 f30 walnut blast 2019

13blk335ix · 07-06-2019, 10:00 PM

i have 77k miles saw my valves and they were covered with carbon buildup. especially in the corners. i am most likely getting walnut blast done this friday.

curious to see others experiance with this on n55's. now that f30s have been out for 7 years.

EDWYER · 07-07-2019, 01:17 PM

After 70K should be a good time to do it and should help w/ rough idle.

13blk335ix · 07-07-2019, 04:02 PM

cool thanks for input.

amw896 · 07-07-2019, 08:03 PM

I thought they fixed this issue on the n55. What oil and interval do u run?

Munchi435i · 07-07-2019, 08:42 PM

Quote:

Originally Posted by amw896

I thought they fixed this issue on the n55. What oil and interval do u run?

Any direct fuel injection engine will have excessive carbon build up on the valves.

msquaredF33 · 07-07-2019, 10:23 PM

I blasted my F33 valves at 80K miles and while there was definitely some buildup, I would not describe it as “bad” and perhaps not even worth doing. But I was doing other work at the time so I had the manifold off anyway so why not?

Before image
https://www.dropbox.com/s/htsfp9ep5a...%20PM.jpg?dl=0

After image
https://www.dropbox.com/s/mfurdolcb4...%20PM.jpg?dl=0

msquaredF33 · 07-07-2019, 10:26 PM

Quote:

Originally Posted by amw896

I thought they fixed this issue on the n55. What oil and interval do u run?

They greatly improved the oil catching at the valve cover / PCV which greatly reduces the oil into intake (and therefore reduces carbon buildup) but all direct injection cars (lacking fuel flow to clean the valves) experience this buildup to some degree.

13blk335ix · 07-08-2019, 12:01 AM

my valves are no where near the pictures of the n54s i have seen. but i beleive mine could use a walnut blast. figuring since i do it at 78k and its there but not horribly bad, hopefully i wont have to do it again until 160k.

i did my oil changes religiously at 10k miles for two years. this last year its been every 5k miles. good oil, always use top tier 93.

i got the car with 42,000 miles so i cant speak for what went on then, which also leads me to want to do walnut blast.

thanks for pictures and replies!

e46m3to335i · 07-08-2019, 06:40 AM

Yeah. N55 are pretty clean in comparison to an N54. Here's a before and after from a 135i that I did a walnut blast on:

JaredG_F30 · 07-08-2019, 10:58 AM

I was curious about this since I'm at 77k and just got quoted $475 for the walnut blast. I'm thinking about taking that and going WMI since it will clean the valves and reduce IATs.

e46m3to335i · 07-08-2019, 11:09 AM

Quote:

Originally Posted by JaredG_F30

I was curious about this since I'm at 77k and just got quoted $475 for the walnut blast. I'm thinking about taking that and going WMI since it will clean the valves and reduce IATs.

Jared,

I still have all the stuff to walnut blast if you'd be interested. A lot cheaper than $475

-Nick

EDWYER · 07-08-2019, 11:13 AM

Quote:

Originally Posted by e46m3to335i

Yeah. N55 are pretty clean in comparison to an N54. Here's a before and after from a 135i that I did a walnut blast on:

Wow, what a difference.

XxThe_RemedyXx · 07-08-2019, 02:39 PM

Quote:

Originally Posted by e46m3to335i

Quote:

Originally Posted by JaredG_F30

I was curious about this since I'm at 77k and just got quoted $475 for the walnut blast. I'm thinking about taking that and going WMI since it will clean the valves and reduce IATs.

Jared,

I still have all the stuff to walnut blast if you'd be interested. A lot cheaper than $475

-Nick

Darn it, why can't you be in NY?

JaredG_F30 · 07-09-2019, 09:42 AM

Hey thanks man. I'm really leaning towards the meth route but I'll let you know if I change my mind. I've never done a walnut blast myself. I'll need to research the steps.

Quote:

Originally Posted by e46m3to335i

Jared,

I still have all the stuff to walnut blast if you'd be interested. A lot cheaper than $475

-Nick

BeerHerder · 07-09-2019, 10:08 AM

Quote:

Originally Posted by JaredG_F30

Hey thanks man. I'm really leaning towards the meth route but I'll let you know if I change my mind. I've never done a walnut blast myself. I'll need to research the steps.

Good reference there. Seems straight forward enough if you're patient and have the tools.

e46m3to335i · 07-09-2019, 10:43 AM

Quote:

Originally Posted by JaredG_F30

Hey thanks man. I'm really leaning towards the meth route but I'll let you know if I change my mind. I've never done a walnut blast myself. I'll need to research the steps.

Just let me know. My meth kit is arriving tomorrow and I plan on doing a walnut blast on my car prior to installing the meth kit. That video pretty much nails everything you need to know. Only thing I do differently is, I use a short wire to bump the starter to open and close the valves. Quicker and easier than hand cranking it IMO.

upsidedownfunnel · 07-09-2019, 01:43 PM

You can buy a portable blaster from Harbor Freight for $30. If you already have a compressor and are able to remove the intake manifold, should be a fairly decent weekend job. Even a portable compressor is only about $100 and it's a good thing to have.

That said, the improvements at 77k miles for the N55 are likely not going to be as dramatic as they were for the N54 at around that mileage. I did my N54 5 series at around 75k and it made somewhat of a difference although not drastic.

Before

After

07-06-2019, 10:00 PM	#1
13blk335ix First Lieutenant 75 Rep 323 Posts Drives: 2013 BMW F30 N55 335ix 6mt Join Date: Feb 2019 Location: New York iTrader: (0) Garage List 2013 BMW 335ix [0.00]	n55 f30 walnut blast 2019 i have 77k miles saw my valves and they were covered with carbon buildup. especially in the corners. i am most likely getting walnut blast done this friday. curious to see others experiance with this on n55's. now that f30s have been out for 7 years.
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07-07-2019, 01:17 PM	#2
EDWYER Yoda of mods 1674 Rep 3,006 Posts Drives: X5 RWD Join Date: Feb 2018 Location: NC iTrader: (40) Garage List 2015 X5 RWD [0.00] 2016 BMW M2 [10.00]	After 70K should be a good time to do it and should help w/ rough idle. __________________ Current: 2020 Explorer ST (Agate Black Metallic), F15 SGM RWD F87 AW (retired) F30 SBM 316rwhp/440rwtq (retired) Follow me on Twitter: https://twitter.com/EdwyerCLT YT: https://www.youtube.com/@DWYERGARAGE/videos
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07-07-2019, 04:02 PM	#3
13blk335ix First Lieutenant 75 Rep 323 Posts Drives: 2013 BMW F30 N55 335ix 6mt Join Date: Feb 2019 Location: New York iTrader: (0) Garage List 2013 BMW 335ix [0.00]	cool thanks for input.
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07-07-2019, 08:03 PM	#4
amw896 Major 583 Rep 1,117 Posts Drives: 2015 BMW M235i Join Date: Feb 2016 Location: ontario iTrader: (0) Garage List 2015 BMW M235i [10.00]	I thought they fixed this issue on the n55. What oil and interval do u run?
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07-07-2019, 10:23 PM	#6
msquaredF33 Enlisted Member 27 Rep 34 Posts Drives: 435i Join Date: Dec 2018 Location: East Coast USA iTrader: (0)	I blasted my F33 valves at 80K miles and while there was definitely some buildup, I would not describe it as “bad” and perhaps not even worth doing. But I was doing other work at the time so I had the manifold off anyway so why not? Before image https://www.dropbox.com/s/htsfp9ep5a...%20PM.jpg?dl=0 After image https://www.dropbox.com/s/mfurdolcb4...%20PM.jpg?dl=0
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07-08-2019, 12:01 AM	#8
13blk335ix First Lieutenant 75 Rep 323 Posts Drives: 2013 BMW F30 N55 335ix 6mt Join Date: Feb 2019 Location: New York iTrader: (0) Garage List 2013 BMW 335ix [0.00]	my valves are no where near the pictures of the n54s i have seen. but i beleive mine could use a walnut blast. figuring since i do it at 78k and its there but not horribly bad, hopefully i wont have to do it again until 160k. i did my oil changes religiously at 10k miles for two years. this last year its been every 5k miles. good oil, always use top tier 93. i got the car with 42,000 miles so i cant speak for what went on then, which also leads me to want to do walnut blast. thanks for pictures and replies!
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07-08-2019, 06:40 AM	#9
e46m3to335i Major 172 Rep 1,375 Posts Drives: 2015 F80 M3 Join Date: Feb 2010 Location: Fort Bragg, NC iTrader: (26)	Yeah. N55 are pretty clean in comparison to an N54. Here's a before and after from a 135i that I did a walnut blast on: Attached Images
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07-08-2019, 10:58 AM	#10
JaredG_F30 Lieutenant Colonel 1106 Rep 1,499 Posts Drives: 2014 335i, M-Sport, Manual Join Date: Dec 2016 Location: Raleigh, NC iTrader: (0)	I was curious about this since I'm at 77k and just got quoted $475 for the walnut blast. I'm thinking about taking that and going WMI since it will clean the valves and reduce IATs. __________________ 2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids
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07-09-2019, 01:43 PM	#17
upsidedownfunnel Colonel 1996 Rep 2,499 Posts Drives: 2014 335i Join Date: Jul 2017 Location: SoCal iTrader: (4) Garage List 2014 BMW 335i [0.00]	You can buy a portable blaster from Harbor Freight for $30. If you already have a compressor and are able to remove the intake manifold, should be a fairly decent weekend job. Even a portable compressor is only about $100 and it's a good thing to have. That said, the improvements at 77k miles for the N55 are likely not going to be as dramatic as they were for the N54 at around that mileage. I did my N54 5 series at around 75k and it made somewhat of a difference although not drastic. Before After
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