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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 12-06-2012, 09:19 AM
gulshan gulshan is offline
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Mein Auto: e92-n54
help with n54 walnut blaster service info

I have a 2007 e92-n54, 6MT (zhp,zpp) with about 32k miles. I plan to keep the car for another 5-6 years at least). I am a DD and do not track or heel toe and all that stuff. I do not granny the car either. Occasionally drive hard. I plan to follow good old Mike Miller maintenance. From a maintenance perspective when do you guys do the walnut blaster service for a n54 ? (at what mileage or after how many years ? ) Mark does not talk about this in his guide or maybe he uses a different term for this. Apparently you need a special tool to do this and not all Indy shops do it. Costs about $500 i think at the dealer. thanks
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  #2  
Old 12-06-2012, 09:53 AM
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KAP8 KAP8 is offline
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I had never heard of a "Walnut Blaster" service until now. I found this thread, and the guy seems very happy with the results.

http://www.bimmerboost.com/showthrea...-*pics-inside*
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Old 12-06-2012, 10:06 AM
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CALWATERBOY CALWATERBOY is offline
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Mein Auto: 2009 E93 N54
Quote:
Originally Posted by gulshan View Post
I have a 2007 e92-n54, 6MT (zhp,zpp) with about 32k miles. I plan to keep the car for another 5-6 years at least). I am a DD and do not track or heel toe and all that stuff. I do not granny the car either. Occasionally drive hard. I plan to follow good old Mike Miller maintenance. From a maintenance perspective when do you guys do the walnut blaster service for a n54 ? (at what mileage or after how many years ? ) Mark does not talk about this in his guide or maybe he uses a different term for this. Apparently you need a special tool to do this and not all Indy shops do it. Costs about $500 i think at the dealer. thanks

60k mi is the rule o'thumb.

DIY

$600 dealer service.

Best: Use boroscope to evaluate; do when needed.
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Old 12-06-2012, 10:28 AM
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KAP8 KAP8 is offline
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Quote:
Originally Posted by CALWATERBOY View Post
60k mi is the rule o'thumb.

DIY

$600 dealer service.

Best: Use boroscope to evaluate; do when needed.
I'm at 64k. I may consideer having my Walnuts Blasted. They certainly look brand new once they are clean. I'm really surprised that I haven't read about that process before.
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  #5  
Old 12-06-2012, 10:49 AM
gulshan gulshan is offline
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Quote:
Originally Posted by CALWATERBOY View Post
60k mi is the rule o'thumb.

DIY

$600 dealer service.

Best: Use boroscope to evaluate; do when needed.
Thanks CALWATERBOY
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  #6  
Old 12-06-2012, 10:50 AM
gulshan gulshan is offline
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Location: usa
 
Join Date: Nov 2011
Posts: 115
Mein Auto: e92-n54
Quote:
Originally Posted by KAP8 View Post
I had never heard of a "Walnut Blaster" service until now. I found this thread, and the guy seems very happy with the results.

http://www.bimmerboost.com/showthrea...-*pics-inside*
great link. Never saw this when i googled. thx
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Old 12-06-2012, 12:16 PM
Leekay07 Leekay07 is offline
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Mein Auto: X5 35D, Former X1 and 335
I just did mine yesterday. What a pain by hand but my car is back now. before it would misfire when I put my car in 5th at 35mph and then press the gas to about 75% and let it pull to 70mph.
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Old 12-06-2012, 04:23 PM
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fun2drive fun2drive is offline
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Mein Auto: 335 vert//M3/4/ 13Outback
I'm at 54K miles and most of that is hiway. I have a borescope and plan to check this out in a few months. I do plan to go to 70K miles if the intake valves look good. Otherwise I will pull the intake and do the walnut blasting. This has been around for over 2 years now and is caused by oil vapor blow by under both vacuum and boost from the PCV. BMWs version leaks some and there is another source of a better valve that has been produced but works only for boost. Under vacuum the oil vapor still gets by. I don't know how much gets by under vacuum and I hope to be able to take some pics with my borescope to see how bad it looks. I have not run the piss out of my 335, that is what my M3 is for so I don't know how typical I would be as a driver.

RBturbo.com is the person supplying an alternative. I bought one and will install it when I do the intake valves...
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