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| Dodge Competition and Performance General Dodge Competition and Performance Discussion |
07-18-2012, 01:20 AM
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#1
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Name: 'strokeThis_'07
Title: Too Much Time
Status: Not Here
Join Date: Dec 2006
Location: Riverton, WY
Member`s Gallery
Posts: 1,626
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S475, race cover or no?
After searching, it looks like the race cover is 5.5" inlet vs 5" for the standard cover, but that's about it. Is there any gain to be had with a race cover on a 475 in a compound arrangement?
Thinking 100% nozzles, dual pumps, 63/68 over 475, EFILive tuning of course. I'd like to be in the 850 range on fuel (thinking the 63/68 and 475 would still spool real good at 6-8k elevation, hence why I'm leaning smaller)
__________________
'07 3500 QC-Goerend-Hamilton-EFILive
'03 2500 QC HO 305/555 6spd-6.7 swap-TNT/R-Southbend
'84 W350 Crew/short. 360/727. Destined for a swap
Quote:
Originally Posted by roachie
Buy turbo - build race truck- get bishes.
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07-18-2012, 02:45 AM
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#2
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Name: mxhunter147
Title: Gear Head
Status: Not Here
Join Date: Apr 2011
Location: Cape girardeau, mo
Member`s Gallery
Posts: 187
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Please don't quote me on this, but IIRC ED told me a race cover is good for about another 50hp in a low pressure turbo.
__________________
06 Dodge 2500
Engineered Diesel, Exergy, Midwest Truck Products, MCN, Toops Performance
10.58 @ 129
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07-18-2012, 07:06 AM
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#3
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Name: homewrecker
Title: gear jammer
Status: Not Here
Join Date: Oct 2007
Location: Statesville, N.C.
Member`s Gallery
Posts: 2,137
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Race cover has a larger a/r.
__________________
05 ram 3500 4x4 QC dually SOLD
05 2500 QC Laramie sport
Garmon built tranny
FI 63/68/.91 ETR-HO S480/92/1.25
dual pumps
105% injectors
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07-18-2012, 02:54 PM
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#4
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Name: White Knight
Title: Too Much Time
Status: Not Here
Join Date: Aug 2007
Location: SLO/Ferndale California
Member`s Gallery
Posts: 1,380
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Quote:
Originally Posted by homewrecker
Race cover has a larger a/r.
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^^ what he said.
http://www.bullseyepower.com/news.asp about 2/3rds of the way down the page under " New Race Cover Test Results Are In" is a dyno comparison of the difference that a race cover makes.
Just like a larger turbine A/R and race cover allows for more flow at the cost of just a little spool. It's not free power as some believe but it is capable of more.
__________________
Derek
98 Dodge 2500 12 valve, 5-speed, 4x4
It's not what you buy, its what you build
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07-18-2012, 06:31 PM
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#5
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Name: UNBROKEN
Title: Ezekiel 25:17
Status: Not Here
Join Date: Apr 2006
Location: TEXAS
Member`s Gallery
Posts: 17,158
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go with a 478 from ED instead
__________________
I ain't got no damn diesel
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07-18-2012, 09:13 PM
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#6
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Name: 'strokeThis_'07
Title: Too Much Time
Status: Not Here
Join Date: Dec 2006
Location: Riverton, WY
Member`s Gallery
Posts: 1,626
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Quote:
Originally Posted by homewrecker
Race cover has a larger a/r.
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I was looking somewhere, maybe CPP or Stainless, and they had a standard cover 475, T6, 1.32 AR, 96 turbine wheel. Then a race cover 475, T6, 1.32 AR, 96 turbine. That's where I got lost and got me thinking
Quote:
Originally Posted by UNBROKEN
go with a 478 from ED instead
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That what you're running Rich?
I'm also trying to determine billet wheels or not, and this batmowheel stuff. Still need to get hold of ED, keep putting it off.
__________________
'07 3500 QC-Goerend-Hamilton-EFILive
'03 2500 QC HO 305/555 6spd-6.7 swap-TNT/R-Southbend
'84 W350 Crew/short. 360/727. Destined for a swap
Quote:
Originally Posted by roachie
Buy turbo - build race truck- get bishes.
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07-18-2012, 09:20 PM
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#7
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Name: AHall
Title: Hobbyist
Status: Not Here
Join Date: Apr 2007
Location: Western Slope, CO
Member`s Gallery
Posts: 4,603
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If you're considering changing turbos you want want to look into a smaller turbine wheel.
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07-19-2012, 06:39 AM
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#8
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Name: dieseljunkie
Title: Wasted Wages
Status: Not Here
Join Date: Dec 2007
Location: Littlestown, PA
Member`s Gallery
Posts: 1,068
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Quote:
Originally Posted by AHall
If you're considering changing turbos you want want to look into a smaller turbine wheel.
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Why? I have the same turbine wheels as the OP and my 2nd gen spools like lighting (faster than a stock 35!). just curious why you say smaller is better.
Id call E.D. and ask Chris.
__________________
02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine.
Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine.
2010 FPP 2.6 points champion
2010 NADM 2.6 points champion
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07-19-2012, 06:59 AM
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#9
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Name: UNBROKEN
Title: Ezekiel 25:17
Status: Not Here
Join Date: Apr 2006
Location: TEXAS
Member`s Gallery
Posts: 17,158
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Quote:
Originally Posted by 'strokeThis_'07
That what you're running Rich?
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Yea...with a 62 on top.
Not a big set of twins by anyone's standards but they can support a lot of power. Should be even more fun once the truck is 2000 lbs lighter.
__________________
I ain't got no damn diesel
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07-19-2012, 12:39 PM
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#10
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Name: homewrecker
Title: gear jammer
Status: Not Here
Join Date: Oct 2007
Location: Statesville, N.C.
Member`s Gallery
Posts: 2,137
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Quote:
Originally Posted by dieseljunkie
Why? I have the same turbine wheels as the OP and my 2nd gen spools like lighting (faster than a stock 35!). just curious why you say smaller is better.
Id call E.D. and ask Chris.
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Think he might have been refering to the s400. A 92 1.1a/r is a nice alternative
__________________
05 ram 3500 4x4 QC dually SOLD
05 2500 QC Laramie sport
Garmon built tranny
FI 63/68/.91 ETR-HO S480/92/1.25
dual pumps
105% injectors
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07-19-2012, 01:16 PM
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#11
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Name: 96strokerwg
Title: Diesel Enthusiast
Status: Not Here
Join Date: Sep 2008
Member`s Gallery
Posts: 149
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I switched from a s475/96/1.32 to a s478/92/1.1
Spool up was quicker as well as dropping a 100 deg on the top end.
I say go with the s478
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07-19-2012, 01:24 PM
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#12
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Name: 'strokeThis_'07
Title: Too Much Time
Status: Not Here
Join Date: Dec 2006
Location: Riverton, WY
Member`s Gallery
Posts: 1,626
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Hmm, interesting. I'll have to look at the 78 as well. Thanks fellas
__________________
'07 3500 QC-Goerend-Hamilton-EFILive
'03 2500 QC HO 305/555 6spd-6.7 swap-TNT/R-Southbend
'84 W350 Crew/short. 360/727. Destined for a swap
Quote:
Originally Posted by roachie
Buy turbo - build race truck- get bishes.
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07-19-2012, 01:37 PM
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#13
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Name: homewrecker
Title: gear jammer
Status: Not Here
Join Date: Oct 2007
Location: Statesville, N.C.
Member`s Gallery
Posts: 2,137
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Forced Inductions is running their sale again on the S400's starting Aug 1. Might want to give Jose a call.
__________________
05 ram 3500 4x4 QC dually SOLD
05 2500 QC Laramie sport
Garmon built tranny
FI 63/68/.91 ETR-HO S480/92/1.25
dual pumps
105% injectors
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07-19-2012, 01:42 PM
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#14
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Name: AHall
Title: Hobbyist
Status: Not Here
Join Date: Apr 2007
Location: Western Slope, CO
Member`s Gallery
Posts: 4,603
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A box s400 75/96/1.32 is a great cheap turbo and 5 years ago was thought to be the best. Just better options out there by today's standards.
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07-19-2012, 01:58 PM
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#15
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Name: UNBROKEN
Title: Ezekiel 25:17
Status: Not Here
Join Date: Apr 2006
Location: TEXAS
Member`s Gallery
Posts: 17,158
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If someone wants a decent amount of air they're hard to beat for 6-700 bucks.
Definitely better options out there now though.
I still laugh at the claims of 900+ on fuel from a 475 in a compound set up...I guess generous dynos can change the laws of physics. 
__________________
I ain't got no damn diesel
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07-19-2012, 02:02 PM
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#16
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Name: AHall
Title: Hobbyist
Status: Not Here
Join Date: Apr 2007
Location: Western Slope, CO
Member`s Gallery
Posts: 4,603
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Correction factor has been a great subject to laugh at lately. We all have 1000hp with the right CF.
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07-19-2012, 04:57 PM
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#17
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Name: dvst8r
Title: Unobtainium
Status: Not Here
Join Date: Feb 2008
Location: Airdrie, AB
Member`s Gallery
Posts: 2,053
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Quote:
Originally Posted by UNBROKEN
...I still laugh at the claims of 900+ on fuel from a 475 in a compound set up...I guess generous dynos can change the laws of physics. |
I don't...
Well as long as the 475 is the secondary I don't.
__________________
Brett
Assistant to the Manager, Ragged Edge Racing.
Quote:
Originally Posted by RonA
If i had some ham, I could have ham and eggs, if i had some eggs.
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07-19-2012, 09:31 PM
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#18
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Name: Big Swole
Title: MegaInterceptor
Status: Not Here
Join Date: Jun 2007
Location: Atlanta, GA
Member`s Gallery
Posts: 16,950
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What ED get for one of those 478's ?
Anyone know?
__________________
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