turbo silencer ring replacement

[Diesel Freak]

I got my prototype from the machine shop. Preliminary tests show higher boost at partial throttle, and faster turbo spool up... . I can not give you a time to achieve full boost since I do not have a data logger. But I can tell you there is 1 psi at idle, 2 psi at 1200 rpm under compression, and 3 psi at 2000rpm under compression. I have an Ashcroft 0-30 psi gage . 5psi increments I will be hooking up once the aluminum piece is done. The engine also seems more responsive at lower rpm's. A 60 to 90 6th gear WOT run showed only 900F for EGT. Ambient air temp was 52F with no wind on a level road. Turbo noise is almost absent compared to the stock turbo without the silencer ring. You do not even know the turbo is there untill 15 psi, and even then you have to strain to hear it. I will be doing WOT testing once I have an aluminum one that can withstand the heat. So far it is looking good! In case you want to know my truck is a 2001 ETH DEE QC SB 4x4 3. 55 gears 35" tires, 3"lift 275 injectors, boost module and elbow set for 30 psi max boost.

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http://www.mudrunner.sites.cc

 

[CumminsAholic]

Sounds like a pretty cool idea. I used to like hearing the turbo... even had the ring out for a while, but now the "fun" is over and I'd be interested in what you're designing. Even with the ring in it's too loud now. Except when I give someone else a ride. #ad

Corey

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1998. 5 2500, 4x4, SB, Red Sport, Agate Interior, Quad Cab, O. H. Console, Auto, 4. 10 LSD, Trailer Tow and Camper Special Packages, Mopar Aluminum Nerf Bars, Spray In Bedliner, Pioneer/Jensen System, 255/85's, Bd Adjustable Preformance Box w/boost module, Boost Elbow, 4" Exhaust Split Into Two 3" w/5" cans, K+N Scotty Style, Exhaust Blanket, Bill K's Valve Body, Mopar Tow Hooks, Front Bumper Step, 55 watt Back-up Lights, Etc, Etc... .

 

[C Schomer]

Cdaledh, make sure you secure it good! I didn't think it could go anywhere, so I put some Lexel on it and let it set up overnight. The turbo sneezes still blew it into the hose and it turned crosswise. That's when I put the setscrews in! Craig

 

[RKohn]

cdaledh,

got a drawing?

 

[Diesel Freak]

I am not worried about it comming off... it secures to the outside of the housing... where the hose attaches. I do have a drawing. It is on CAD release 14. The aluminum piece will cost me $500 to have it CNC machined from billet 5" round bar.
[This message has been edited by cdaledh (edited 02-22-2001). ]



[This message has been edited by cdaledh (edited 03-02-2001). ]

 

[Todd T]

what do you plan on doing for filtering and does your intake tube still fit with the ring installed?

 

[Diesel Freak]

the tolerance around the housing is . 005" and I will be using an "O" ring between the cone and the housing to prevent the admission of foreign particles. the stock air hose fits on the end of the cone... there is about . 25" clearance between it and the alternator.

 

[Paul]

I have my piece of stock setting in the garage. I am waiting for some time to work on the lathe, in between making parts for my '26 IHC and helping my son rebiuld the engine in his CJ 7.
Did you use a single angle?

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Paul A. Schmidt
95, 4X4, SLT 2500, 5 spd. , 4. 10, 270 hp. ,675ft. lb. TST, AFC spring kit,215hp. injectors,16cm2 turbo housing, Pacbrake, Walker muffler,
GearVendor O. D. , CenterForce Dual Friction clutch.
Eastern PA.

 

[Diesel Freak]

Yes I used a single angle... inlet and outlet are chamfered to ease the transition.

 

[Diesel Freak]

The silencer ring is done!
There are pics on my site

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http://www.mudrunner.sites.cc

 

[PRout]

wow, gee wiz. .

I remember when I got BLASTED by the BIG BOYS for saying it'll run better with something in there to smoothen out the airflow. . I'll be darned...

Nice job CD...

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2k, 30k miles, QC, SB, 4x, 6sp, 3. 54, 285/75r16 bfg/at, stock air cleaner (reliable), silencer ring "in" (runs better), Sunnybrook 28' fiver, 16,780 lbs. 18mpg (unloaded), 12-14 mpg (loaded). VA, DD1's, PS Boost module & elbow, BD brake... also, Nitrous Oxide piped direct into the block (stealth - to keep the warranty), 10 gallon per minute fuel pump, ECM right out of Don Garlit's Top Fueler (he gave it to me) (for letting him ride in my truck), Super Modified DD1 Injectors ("Hand Honed" with a 1/4" reamer & my 12v Makita). More BOMBING to come. .

 

[jmeehan]

Any chance of getting some dyno numbers with and without your new part? Will you be selling these? How long is the waiting list?

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ex Ford tech, now driving '01. 5 2500 4X4 QC LB ETH/DEE SLT 3. 54, Patriot Blue

 

[Gary C]

#ad


What's the nozzle for?

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2001. 5 2500 QuadCab SLT, Auto, 3. 54 Anti-Spin Axle, 4X2, SWB, White/Tan, Stockland Camper, Interior kit, Debadged, Custom CUMMINS Logo Sticker, Gauges on their way with Pillar Mount, EZ Box on the Table, Front Spoiler, Sport Tail Lenses, Valentine One, Rancho Transmission upgrade, DunRite TC, VB Blueprinting, and the H3ll with the warranty, BOMBing shall commence.
www.ProwlerOnline.com
View my Cummins Sticker

[This message has been edited by Gary C (edited 03-02-2001). ]

 

[Diesel Freak]

Propane or Nitrous Oxide

 

[Bart Timothy]

We just tested an inlet ring simular to that today (no nozzle though) on Edge's dyno. Guess what?? Absolutely no difference over the stock ring in power or boost. Didn't check for EGTs though. It may help there.

 

[kevin1]

these turbo's all have what is called "bleed air" by putting that gismo in you will be loosing the bleed air effect and your egt could quite possibly go up in stead of down Im not a fan of anything restricting the airflow into the turbo from tractor pulling we have found that nothing in the way works best my . 02

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2001. 5 ETH/DEE 4x4, DRW QC DD3's, EZ, HX40 machined out for more flow, Custom 4" exhaust turbo back staight pipe with 5" chrome tip in front of rear tires,spa's, mcleod clutch, fuel lines,mag hytech rear end cover,psycotty air system,relocated blow by bottle,Lucerix power heated mirrors,more to come

 

[Diesel Freak]

Bleed Air? sounds like some sort of recirculation from discharge back to the inlet internal to the housing (like a recirculation line on a centrifugal pump)... . would make discharge temp go up. As for restriction, there is none.
Also, adding more air to a diesel engine does not make more power..... The cone is designed to reduce turbo lag, and provide a convienent place to introduce N2O or C3H8 into the engine without drilling any holes. the most effective way to add power is to modify the fuel curves with either a box or injectors.
The HX-40 adds power only because it takes less turbine drive pressure to generate high boost, (lets the engine breathe easier at high power levels and RPM) and it also allows more aggressive fueling because of that fact... . lower back pressure on the engine.
I actually saw a slight drop in egt with the prototype UHMW cone (50F), but do to safety concerns I have had to wait until now to do some extended duration full load testing.

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http://www.mudrunner.sites.cc

[This message has been edited by cdaledh (edited 03-03-2001). ]

 

[drawson]

The cone Bart is talking about was supplied by me to the Edge for testing and as Bart said there was no recordable gain on the Dyno. I have had one in mine for about a month and my milage is up by . 3 MPG and I do see 1 PSI high boost. 38 to 39PSI. On the down side it dropped the noise from my PSA(wife liked this) and I can now hear the turbo back wash when shifting.

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EAT'M UP
97 2500 Club 4X4 3. 54, Forrest Green/Driftwood, LSD 5 speed, & Psychotty Air System, TST #11, 370 HP injectors, timing at 16 deg. , 16CM2 housing, AFC spring kit, Geno's Exhaust Blanket, TST EGT gauge & 0-60 boost gauge in A Pillar, Cat-be-gone, 4" Dynomax Bullet muffler, Crome 4" turn down, Rad fan removed, AmsOil Through out, Geno's trans filter kit, AmsOil Bypass system, Lund Winter front, Leer Cab Level Shell Driftwood , 255/85R16, Dyno'd 342 HP pre injectors & turbo housing *NRA/USPSA member and proud of it*

[This message has been edited by drawson (edited 03-03-2001). ]

 

[Paul]

Finished mine and installed it tonight. Response seems alittle better. Alot better than running with no ring, wich is the way I drove the last day so I could get some final dimensions. The turbo noise is definitly different. I made my ring using the shape of a velocity stack or venturi, rather than a single angle cone. I checked with an engineer and that was his rcommendation for a better flow. If anybody is interested I will post some photos.



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Paul A. Schmidt
95, 4X4, SLT 2500, 5 spd. , 4. 10, 270 hp. ,675ft. lb. TST, AFC spring kit,215hp. injectors,16cm2 turbo housing, Pacbrake, Walker muffler,
GearVendor O. D. , CenterForce Dual Friction clutch.
Eastern PA.

 

[Diesel Freak]

I get almost no noise from the turbo except when shifting or backing off the throttle also... . sounds like someone is depressurizing an air line in the airbox. I used a single angle cone for ease of manufacture. now I just need to put my Dad's Massey Furgeson 360 4x4 front end loader on the trailer and tow it around for a month