Gotta love those valve deposits
03-23-2009, 03:26 PM
#1
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Gotta love those valve deposits
RS4 Engine is in the UK. 19K miles. Dyno shows power output of engine to be low by 20-30 HP. Engine was serviced normally at the dealer.http://www.rs246.com/index.php?name=...asc&highlight=
03-24-2009, 04:51 AM
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03-24-2009, 05:09 AM
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the same company who makes the cyclones makes a bunch of different types of seperators...
unfortunately the name escapes me... RS246 had some nice stuff on it, including the patent drawings for the cyclone mechanism...
found it:
this is one type by the same company as makes the cyclone
http://www.mann-hummel.com/group/upl...BLAXUCmOK5.pdf
patent drawings:
http://www.google.com/patents?id=9p9...159723#PPA1,M1
http://www.google.com/patents?id=zuy...rators#PPA1,M1
the device itself:
http://www.mann-hummel.com/company/i...=35&rec_no=319
unfortunately the name escapes me... RS246 had some nice stuff on it, including the patent drawings for the cyclone mechanism...
found it:
this is one type by the same company as makes the cyclone
http://www.mann-hummel.com/group/upl...BLAXUCmOK5.pdf
patent drawings:
http://www.google.com/patents?id=9p9...159723#PPA1,M1
http://www.google.com/patents?id=zuy...rators#PPA1,M1
the device itself:
http://www.mann-hummel.com/company/i...=35&rec_no=319
03-24-2009, 03:01 PM
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I think the problem is exasperated by not having fuel to 'wash' the valves...
not sure, but I would think once warmed up the erg gas would be pretty clean, relatively speaking, as compared to the crankcase stuff...but it's hard to quantify...
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03-25-2009, 06:15 AM
#8
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Chris,
Did you read the first several paragraphs of the patent? It is essentially a public admission of the current problem that Audi and VW FSI engines are experiencing.
Did you read the first several paragraphs of the patent? It is essentially a public admission of the current problem that Audi and VW FSI engines are experiencing.
03-25-2009, 11:46 AM
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hmmm, would a supercharger eliminate this? seriously...
not saying that I would get a supercharger for the purpose of eliminating the carbon deposits... but if I end up getting one and it eliminates that problem than it's an added bonus!
I thought I read in a recent post somewhere that Audi developed a cleaning solution for this problem? I can't remember what it's called or what to search for exactly..
not saying that I would get a supercharger for the purpose of eliminating the carbon deposits... but if I end up getting one and it eliminates that problem than it's an added bonus!
I thought I read in a recent post somewhere that Audi developed a cleaning solution for this problem? I can't remember what it's called or what to search for exactly..
03-25-2009, 11:56 AM
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hmmm, would a supercharger eliminate this? seriously...
not saying that I would get a supercharger for the purpose of eliminating the carbon deposits... but if I end up getting one and it eliminates that problem than it's an added bonus!
I thought I read in a recent post somewhere that Audi developed a cleaning solution for this problem? I can't remember what it's called or what to search for exactly..
not saying that I would get a supercharger for the purpose of eliminating the carbon deposits... but if I end up getting one and it eliminates that problem than it's an added bonus!
I thought I read in a recent post somewhere that Audi developed a cleaning solution for this problem? I can't remember what it's called or what to search for exactly..
higher crankcase pressure ~ more blow-by
higher gas velocity, less efficient cyclone operation
just a guess
maybe the increased intake airflow might offset some of that...
but who cares, 100 more HP would alleviate the concern
