Why remove the silencer ring?
04-09-2003, 06:50 AM
#1
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Why remove the silencer ring?
I still don't know about this silencer ring thing. I removed it, heard the sound, and after a couple of weeks, put it back on. Not that I didn't like the sound, but it became clear to me that the ring is there more to shape the air moving into the turbo blades than to silence the unit. If you look at the metal facing around the blade housing, it's deeply indented for structural strength and baffling. Without the ring, air flow in that area will be turbulent, and likely create a partial vacuum in front of the turbo inlet. It's the turbo blades overcoming that unnecessary turbulence that gives the bigger sound, but the turbo also has to work harder to straighten out the "messy" air. Not great for the turbo at 60K RPM, the quieter it is, the better it's working. Sure, the difference in HP is probably minimal, but I'll bet it has a measurable effect on the life of pinwheel bearings. <br><br>Seems like a small but unnecessary risk to me. <br><br>ascraeus
04-09-2003, 08:02 AM
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Re:Why remove the silencer ring?
I think that the only change that a little lower compressor inlet pressure would have is a slight increase in the thrust bearing load. I like the sound, and I don't think it is detrimental to the cartridge life. Other things, such as hot shutdowns and surging, have a much more profound effect on cartridge life-cycle.
04-09-2003, 10:36 AM
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Re:Why remove the silencer ring?
It is a dyno proven fact that removing the silencer ring has absolutely no affect whatsoever on power. And as far as I know, I've never heard of a turbo dying prematurely from removing the ring.
04-09-2003, 03:58 PM
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Re:Why remove the silencer ring?
If the ring were to make that big of a difference, wouldn't there be a longer intake to accomodate a more "cone" shaped "silencer" ring in order to create a better vortex of airflow to the turbo thus enhancing the efficiency and power?
04-09-2003, 05:02 PM
#6
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Re:Why remove the silencer ring?
[quote author=Jack Thorpe link=board=7;threadid=13388;start=0#126126 date=1049922254]<br>The only place you'll see this ring is on the Dodge trucks. ....[/quote]<br><br>I dont know about that Jack. <br>Ive seen them in glove boxes, hanging on garage walls, and if you want to see mine, just look in the tool box! 
<br><br> 
<br>Rich
<br><br> <br>Rich
04-09-2003, 07:49 PM
#7
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Re:Why remove the silencer ring?
Took mine out last night! Love the sound and everyone I have talked to said it will not hurt the turbo any. It was designed to keep the noise level down for a driving vehicle. I say if you want a quite rig, BUY A GASSER! ;D
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04-09-2003, 08:27 PM
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Re:Why remove the silencer ring?
[quote author=02DSLDOG link=board=7;threadid=13388;start=0#126211 date=1049935784]<br> I say if you want a quite rig, BUY A GASSER! ;D<br>[/quote]<br><br>I think quite = quiet.<br><br>small typo, but changes the whole meaning of the statement <br><br>phox
<br><br>phox
04-09-2003, 08:41 PM
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Re:Why remove the silencer ring?
[ I say if you want a quite rig, BUY A GASSER! ;D<br>
04-09-2003, 09:30 PM
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Re:Why remove the silencer ring?
[quote author=Spark Chaser link=board=7;threadid=13388;start=0#126238 date=1049938876]<br>
<br><br>HEHE- Ever hear a lil blown gasser Chevy small block turnin' 7200 RPM? It sounds way better than my CTD ;D<br>[/quote]<br><br><br>But didn't I see that small block torn apart on the garage floor???????!!!!!!! 
I think ur CTD pulls as hard as the small block did, but blower whine is hard ta beat! 
[ I say if you want a quiet rig, BUY A GASSER! ;D<br>
I think ur CTD pulls as hard as the small block did, but blower whine is hard ta beat!
04-09-2003, 10:15 PM
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Re:Why remove the silencer ring?
Y'all are saying it doesn't matter and you like the whine. Great! Go for it! ;D<br><br>I'm saying the whine has to come from somewhere, and it comes from increased turbulence in the air going through the blades. I'm saying that over a lengthy service life, there will be increased wear on bearings. I'm not saying the turbo is going to scatter or you're going to dyno 50 HP less because y'all took the silencer ring out. :
<br><br>Geez, now I feel like a troll(er?). <br><br>Somebody had a photo of a big cone welded to the turbo inlet to shape the air. He said it made a difference. Whoever you are, help me out here, guy!<br><br>ascraeus
<br><br>Geez, now I feel like a troll(er?). <br><br>Somebody had a photo of a big cone welded to the turbo inlet to shape the air. He said it made a difference. Whoever you are, help me out here, guy!<br><br>ascraeus
04-09-2003, 10:20 PM
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Re:Why remove the silencer ring?
Nah- you aren't a troll... Just the way forums go-
fan example. Sr-71 has a big cone in front of the fan blades.
F-14, 15, 16 no cone. They all seem to produce an enormous amount of thrust. To each their own ;D
fan example. Sr-71 has a big cone in front of the fan blades.
F-14, 15, 16 no cone. They all seem to produce an enormous amount of thrust. To each their own ;D
04-09-2003, 10:22 PM
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Re:Why remove the silencer ring?
<br>But didn't I see that small block torn apart on the garage floor???????!!!!!!! I think ur CTD pulls as hard as the small block did, but blower whine is hard ta beat! <br>
I think ur CTD pulls as hard as the small block did, but blower whine is hard ta beat! <br>
04-09-2003, 10:39 PM
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Re:Why remove the silencer ring?
[quote author=Jack Thorpe link=board=7;threadid=13388;start=0#126126 date=1049922254]<br>The only place you'll see this ring is on the Dodge trucks. Seems the other Cummins engines have done fine without it. I<br>[/quote]<br><br>This is just my opinion.<br>It makes sence to me that the reason the ring is mainly in the dodge application is because DC wanted to make there product quieter for all the old foggies out there that don't want to here their turbo.<br>Cummins does not require it in other apps. of the 5.9.<br>But this is about the only stipulation that Cummins would let DC put on their engine.<br>But at least you can take it out to hear it if you want. ;D<br>You can order a HX40 with a ring for about $100 extra. 
<br><br> : Eddie : 8)
<br><br> : Eddie : 8)