Re: Just finished bench test my new intake valve cleaner
[Re: Stanton]
#1779836
03/14/15 06:57 PM
03/14/15 06:57 PM
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Joined: Jan 2003
Posts: 338 Montreal Quebec
STROKIE
OP
enthusiast
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OP
enthusiast
Joined: Jan 2003
Posts: 338
Montreal Quebec
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Quote:
Cool ! Good ol' Canadian ingenuity !!
Thanks I like to share my ideas to moparts fans...
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Re: Just finished bench test my new intake valve cleaner
[Re: Pacnorthcuda]
#1779838
03/14/15 07:14 PM
03/14/15 07:14 PM
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Joined: Jan 2003
Posts: 338 Montreal Quebec
STROKIE
OP
enthusiast
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OP
enthusiast
Joined: Jan 2003
Posts: 338
Montreal Quebec
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Quote:
Why not just drop the valves?
The reason I bench test first because I want to do it on engine with heads on it...
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Re: Just finished bench test my new intake valve cleaner
[Re: STROKIE]
#1779839
03/18/15 10:47 PM
03/18/15 10:47 PM
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Joined: Jan 2003
Posts: 1,759 Windsor, ON, Canada
Diplomat360
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,759
Windsor, ON, Canada
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Hmm...looks nice, I also happen to want to do that very same thing...because my old valve seals were leaking huge amounts of oil which is now nicely baked onto the valve head and the stem.
However...the vacum will not pull out all the blasting material...so is it that the wallnut stuff, being organic and easily burned (I am guesstimating this), is OK to be pulled into the combustion chamber???
I mean, it is still abrasive, no? So if loged between the piston ring and cylinder wall will it not score something? Or is it simply too darn soft to do any harm?
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Re: Just finished bench test my new intake valve cleaner
[Re: dogdays]
#1779845
03/20/15 01:27 AM
03/20/15 01:27 AM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Quote:
Walnut shell blasting to remove carbon buildup on valves was used extensively by BMW a couple of decades ago.
The walnut shells are organic and burn. They are softer than the metal so they can't damage it, but harder than the carbon deposits. Anything that doesn't burn when the engine starts up again, gets blown out of the chamber.
There isn't a downside to doing this. The upside is depending on engine controls, it may result in increased mileage. It will for sure increase power to pre-buildup levels.
R.
BMW still uses it. Still have problems. Valve stems leak oil.
Just saw techs at a BMW dealership using one today.
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