|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Walnut blasting problem
|
|
02-08-2017, 07:08 PM | #1 |
Second Lieutenant
56
Rep 221
Posts |
Walnut blasting problem
I started walnut blasting my n54 tonight and I did two valves and when I went to jump the starter to do the third, shells fell into the other valves from the top? I don't know why and I'm freaking out, please help me out. It definitely went into some of the open ones
|
02-08-2017, 07:41 PM | #5 |
Second Lieutenant
56
Rep 221
Posts |
I cleaned 1 and 2 and when I jumped the stars tree to close 3 so I could clean it, shells fell into 6. I didn't accidentally get them in there...
|
Appreciate
0
|
02-08-2017, 07:51 PM | #6 |
Major
124
Rep 1,151
Posts
Drives: 10 e90 335i
Join Date: Mar 2010
Location: jacksonville, FL
|
That makes zero sense! If you were cleaning 1,2 and didn't accidently get shells into 6, how did they get there to begin with?
As other's stated, just attach a small hose to the vac and shove it down the sparkplug hole. Then blow compressed air into the cylinder with the valves open. That should take care of them.
__________________
JB4, DP, VMR V710, Sonic Tuning S1 coilovers, Hybrid Ovations, Soundsplinter 10" and Zapco DC Ref amps |
Appreciate
1
Bimmer 808170.00 |
02-08-2017, 07:51 PM | #7 | |
Captain
225
Rep 807
Posts
Drives: 2011 335is 6MT
Join Date: Jan 2016
Location: Chicago
|
Quote:
Definitely tape off the other ports while your cleaning each one for the rest. |
|
Appreciate
0
|
02-11-2017, 12:32 AM | #9 |
E39
134
Rep 286
Posts |
I usually come across 4-5 banks that are closed when beginning the process. I've done over 20 cars and I'm having a hard time on what exactly the OP did. Did you not suck up all the excess Walnut shells prior to bumping the starter? Or did you blast while the valve was open? Always make sure the valves are closed when blasting. It's unrealistic to think you will get every single particle out. Some particles will get past but that's exactly why BMW uses Walnut shells, they will just burn off. We need more details OP on what exactly happened to be able to point you in the right direction.
|
Appreciate
0
|
02-11-2017, 07:34 PM | #11 |
Private First Class
52
Rep 165
Posts
Drives: 2011 335is
Join Date: Jun 2013
Location: Malibu, California
|
Just how much shells are we talking about? One of the reasons we are supposed to use walnut shells is because when a few get into the engine, they'd simply burn off. A small amount is no big deal. If it was a significant amount, then opening the valve and blowing air through the spark plug hole will probably clear enough that it won't be a problem.
|
Appreciate
0
|
02-25-2017, 06:25 PM | #12 |
Second Lieutenant
56
Rep 221
Posts |
Update: I bought a borescope and looked through the spark plugs and saw nothing. So I put everything all back together and it started up great with no issues. I appreciate the help. I guess I was just worried I was going to cause damage to my engine. In the end I guess I did it right.
|
Appreciate
0
|
02-26-2017, 01:28 AM | #13 | |
Captain
423
Rep 900
Posts |
Quote:
|
|
Appreciate
0
|
02-26-2017, 11:22 AM | #14 |
Private
27
Rep 64
Posts |
This thread got me to thinking about the whole process. What if a person were to have a second vacuum attachment going into the spark plug hole and have the valves open while doing the walnut blasting? Would this clean the valves better and possibly the seating area of the head/valve? The only post work you would have to do is like the OP did and bore-scope the cylinder to verify you retrieved all the walnut media.
I also wonder if post walnut would there be any benefit to running corn cob media through? |
Appreciate
0
|
02-26-2017, 12:37 PM | #15 | |
E39
134
Rep 286
Posts |
Quote:
|
|
Appreciate
0
|
02-26-2017, 01:08 PM | #16 | |
Captain
573
Rep 870
Posts
Drives: 2009 335i E90
Join Date: Jan 2017
Location: Fremont, CA
|
Quote:
Then I'll reverse the intake and exhaust sides so those same walnut shells will be expelled past what USED to be the intake valves, hence cleaning them as they blow by. Genius. Patent pending. Come to my seminar, you make lots of money. Your friends are losers.
__________________
2008 E61 535xi Sport Wagon / 100k Miles / Deep Sea Blue Metallic / Natural Brown Interior / MHD Stage 1 91 CA-Octane Tune.
SOLD - 2009 E90 335i M-Sport Sedan / 143k Miles / Alpine White Exterior / Chestnut Brown Interior / Mishimoto FMIC / xHP Stage 2. Last edited by MysticRob; 03-02-2017 at 01:13 PM.. |
|
02-26-2017, 08:43 PM | #17 | |
Captain
423
Rep 900
Posts |
Quote:
|
|
Appreciate
1
Jklad421.00 |
02-27-2017, 06:28 AM | #18 | ||
Second Lieutenant
56
Rep 221
Posts |
Quote:
|
||
Appreciate
0
|
02-27-2017, 12:10 PM | #19 | |
Slow.
3782
Rep 7,151
Posts
Drives: Single Turbo N54 on Meth!
Join Date: Jun 2012
Location: Boston, MA
|
Quote:
__________________
|
|
Appreciate
0
|
02-27-2017, 08:28 PM | #20 |
Captain
166
Rep 906
Posts
Drives: 2008 535xi / 2011 Z4 35Is
Join Date: Jan 2011
Location: Indiana
|
I used a lot more media than what is mentioned my first time. Supposed to be about 25lbs to do the job.
I could not get the air pressure/valve opening/tube angle correct. However... My shop vac was clean! I simply scooped out the media from the vac and put it back in the pressure tank and kept at it until unlearned how to do it! |
Appreciate
0
|
03-01-2017, 05:41 PM | #21 | |
First Lieutenant
69
Rep 310
Posts
Drives: 2007 BMW 335i M-Sport E90
Join Date: Jul 2012
Location: land of the long white cloud
|
Quote:
Is there a detailed explanation for this? |
|
Appreciate
0
|
03-01-2017, 06:10 PM | #22 |
Captain
225
Rep 807
Posts
Drives: 2011 335is 6MT
Join Date: Jan 2016
Location: Chicago
|
|
Appreciate
0
|
Bookmarks |
|
|