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#4670943 - 02/19/18 02:04 PM Walnut blasting dyno results
Tommiee Offline


Registered: 03/24/13
Posts: 161
Loc: The Netherlands
I work at a tuning company and also do some specialist things like DSG diagnosis/repairs, DPF cleaning( not the cheap way but the good way ), DPF removals, tranny flushes and intake cleaning.

Wanted to share this walnut blasting cleaning with you guys. I'ts my dads car, recently bought. '08 Mini clubman john cooper works 211hp. 1.6 direct injected turbocharged engine.

When i drove it i felt like it was holding back, hesitating and not delivering power.

I have put the car on our superflow 4x4 dyno and measured. Then cleaned the valves using our walnut blasting tool and after that used the tunap valve clean spray with running engine.

Let these results speak for themselves

Black lines stock before valve cleaning. Red lines after cleaning







Stock with dirty valves 191 hp
Stock with cleaned valves 211 hp ( exactly as per manufacterer! )

Testdrive after cleaning also confirmed a drive without hesitation and improved performance.



Edited by Tommiee (02/19/18 02:28 PM)
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#4670980 - 02/19/18 02:32 PM Re: Walnut blasting dyno results [Re: Tommiee]
DriveHard Offline


Registered: 11/24/03
Posts: 1070
Loc: Middle of Iowa
cool pics, some of the worst valves I have seen!!
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#4670981 - 02/19/18 02:33 PM Re: Walnut blasting dyno results [Re: Tommiee]
javacontour Offline


Registered: 06/26/03
Posts: 10306
Loc: Illinois
Looks like about a 10% improvement in most of the plots. Not bad.
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#4670983 - 02/19/18 02:34 PM Re: Walnut blasting dyno results [Re: Tommiee]
Tommiee Offline


Registered: 03/24/13
Posts: 161
Loc: The Netherlands
Me too drive hard
Could not believe my eyes when i saw these with only 70k miles on the car..
_________________________
Seat Leon 2.0T FSI 2007 380HP / 370 lb ft
Petronas Syntium 7000 0W40 + LM Ceratec
Mahle Filter

Suzuki Alto 1.0 2011
Shell Helix Ultra 0W20

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#4670985 - 02/19/18 02:36 PM Re: Walnut blasting dyno results [Re: javacontour]
Tommiee Offline


Registered: 03/24/13
Posts: 161
Loc: The Netherlands
@javacontour
Yes, and also notice the curve being more straight with a lot less pikes in the high rpm area.


Edited by Tommiee (02/19/18 02:37 PM)
_________________________
Seat Leon 2.0T FSI 2007 380HP / 370 lb ft
Petronas Syntium 7000 0W40 + LM Ceratec
Mahle Filter

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#4670993 - 02/19/18 02:42 PM Re: Walnut blasting dyno results [Re: Tommiee]
Reddy45 Offline


Registered: 08/15/08
Posts: 2973
Loc: USA
Does the blasting media get vacuumed out? Or what happens to it?

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#4670994 - 02/19/18 02:42 PM Re: Walnut blasting dyno results [Re: Tommiee]
HemiHawk Offline


Registered: 03/09/16
Posts: 842
Loc: PA,US
Thanks for doing this and sharing the results! I've been worried about build up on my GTI. It looks like catch cans reduce the problem somewhat, but not all together. And good cans for some of these cars are so expensive you might as well just drive it until it needs a cleaning.

That power number is also great, seeing the rated number at the wheels is always good. Is that torque number ft/lbs?
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#4671001 - 02/19/18 02:48 PM Re: Walnut blasting dyno results [Re: Tommiee]
Tommiee Offline


Registered: 03/24/13
Posts: 161
Loc: The Netherlands
@reddy45
Yes you vacuum it out during the blasting. Special adapters make you vacuum and clean during the same time.

@hemihawk
In europe we always talk about crank HP. These figures are crank hp and Nm. We first do a drivetrain loss measurement in the gear that we are going to use to measure te power ( 4th gear most of the times )

So its exactly 211 crank hp's and converter to lb ft its around 224 crank lb ft.
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Seat Leon 2.0T FSI 2007 380HP / 370 lb ft
Petronas Syntium 7000 0W40 + LM Ceratec
Mahle Filter

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Shell Helix Ultra 0W20

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#4671012 - 02/19/18 03:05 PM Re: Walnut blasting dyno results [Re: Tommiee]
supton Offline


Registered: 11/09/08
Posts: 11975
Loc: NH
Interesting. 20hp loss, or 9%. That's a lot of crud. I suspect 9% is a detectable seat of the pants measurement

I know every engine design is different. Is it a linear loss? as in, different engine with half that crud, is it 5% loss?
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#4671016 - 02/19/18 03:09 PM Re: Walnut blasting dyno results [Re: Tommiee]
Tommiee Offline


Registered: 03/24/13
Posts: 161
Loc: The Netherlands
I dont think the loss is linear. I think it it doesnt lose much power in the first build up phase. But seeing the valves like this i think a little more buildup would cause the engine not to deliver any decent power anymore.

Mostly you can feel that the engine is running right. Pulling strong and linear without shocks and hesitation.

Ofcourse we have tuned the engine after all of this was done. 228 hp and 350 nm if the best we got out of this engine in complete stock form.


Edited by Tommiee (02/19/18 03:11 PM)
_________________________
Seat Leon 2.0T FSI 2007 380HP / 370 lb ft
Petronas Syntium 7000 0W40 + LM Ceratec
Mahle Filter

Suzuki Alto 1.0 2011
Shell Helix Ultra 0W20

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#4671030 - 02/19/18 03:37 PM Re: Walnut blasting dyno results [Re: Tommiee]
KGMtech Offline


Registered: 10/17/14
Posts: 967
Loc: SW Ontario Canada
Impressive solution. What would this cost a non-family customer?
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#4671046 - 02/19/18 03:49 PM Re: Walnut blasting dyno results [Re: Tommiee]
OVERKILL Offline


Registered: 04/28/08
Posts: 36464
Loc: Ontario, Canada
That's nuts (pardon the pun).

And this is why some people seem to have at least a somewhat rational concern about DI. Not a problem on port injection applications.
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#4671056 - 02/19/18 03:57 PM Re: Walnut blasting dyno results [Re: Tommiee]
WhizkidTN Offline


Registered: 12/05/16
Posts: 491
Loc: E. Tennessee
Another reason I like the dual systems that have both Port and Direct Injection (ECU moves between the two depending on load/mode, etc.).
At least in this type of engine, the use of fuel tank based cleaners (and just running good Top Tier Gas) can keep the intake valves decently clean.
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#4671089 - 02/19/18 04:16 PM Re: Walnut blasting dyno results [Re: Tommiee]
Dylan1303 Offline


Registered: 10/14/15
Posts: 180
Loc: Washington
How many miles or km where on it before the cleaning?
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#4671095 - 02/19/18 04:19 PM Re: Walnut blasting dyno results [Re: Tommiee]
Trav Offline


Registered: 11/20/06
Posts: 18893
Loc: MA, Mittelfranken.de
That's quite an improvement. A walnut blaster that incorporates a shop vac is fairly easy to make from cheap HF stuff, they even have the shells.
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