3rd Gen High Performance and Accessories (5.9L Only) Talk about Dodge/Cummins aftermarket products for third generation trucks here. Can include high-performance mods, or general accessories. THIS IS FOR THE 5.9L ONLY!

Which Nathans Twins to go with?

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Old Aug 15, 2008 | 01:04 PM
  #46  
JCLeary's Avatar
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Originally Posted by jaredb900rr
I'm curious about this too. If someone knows what the cost is to swap wheels, I'd like to know.
IIRC it's about $400, but you get all fresh bushings and seals
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Old Aug 15, 2008 | 01:28 PM
  #47  
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From: Fort Lupton Colorado
hey guys, could someone pm me Nathan's number, i misplaced it and would like to call him
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Old Aug 15, 2008 | 05:45 PM
  #48  
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From: Georgia... Iowa Bound
Originally Posted by osci
Depends on what your' goals are! I ran the stocker / gt 4202 for several months and if you tow or want more than 500 usable hp forget using the stocker. The biggest problem is drive pressures../egts. The set works great for daily driving and lites the same as stock, but put a load behind it or anything above 35 psi and drive pressures go through the roof. At 35-40 psi drive pressures were 70-80 and at 52-55 psi drive pressures were 100+. Due to pressures and temps I could barely tow with just my injectors 350 hp and could use no additional power. I spent many hours working on the wastegate and tuning with 0 results. My last attempt was to modify the exhaust housing on the stocker. This did help reduce some but overall the same issues were present high drive pressures and egts. I finally gave up and went with a II ps 62-12 as a sec which resolved all issues. Driive pressures are 1-1 at 55-60 psi, egts average 900 and with a load of 12k 1100 max and this was with additional power. When I was shopping last Oct, there were very few people running this set up and feed back was next to nothing with all not having a clue on drive pressures. Save yourself alot of grief and go with a larger sec over the gt 4202.
Not doubting you, but I swear Ive read on here that Nathan has said the stocker/s400 drive pressure is 1:1 at 55 PSI
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Old Aug 15, 2008 | 06:17 PM
  #49  
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From: Claxton, GA
Originally Posted by wap
Judgeing from your other posts about turbos and lag and such I think the 62/65 over an S400 would be your best bet. It should spool nice and be enough air for 700. Also (I figure you are aware of this but I am unsure of costs) but you can just send your turbo in and have them put a 65 mm wheel in it and it may be cheaper.
Yeap, very aware but I might want that nice shinny one on top LOL.... Cost will be $400.00 plus shipping....
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Old Aug 15, 2008 | 10:59 PM
  #50  
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From: seattle
Originally Posted by Hintz
Not doubting you, but I swear Ive read on here that Nathan has said the stocker/s400 drive pressure is 1:1 at 55 PSI
I was also told that many times well before I bought my set with both the gt 4203 and 400 and the stocker. I run the gt 4202 and although I never ran the 400 I don't know. Since they are very similar in flow the 400 may be a little better but seriously doubt 1-1 @ 55. The exhaust housing on the sec was the problem, way too small to flow enough air. The modded sec turbo confirmed this along with many hours of tuneing.
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Old Aug 16, 2008 | 12:32 AM
  #51  
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From: seattle
Originally Posted by goose2w1
So much info!!! Thanks everyone! Well after talking over things with the Mrs., I don't think I can afford anything over the stocker/S400 set-up and still be able to afford the injectors/studs/and springs, plus a couple little touches here and there. I e-mailed Nathan and asked him for some other prices, so we'll see. If I do go with the Stocker/S400, does this give me enough room to grow later? Would I be able to keep the S400 and replace the stocker with something else down the road?
It will give you room to grow since you will already have the primary and pipeing. You will need to modify for the set as I did. Changing from the stocker to a s300 var moves the new set back 1" to the fire wall because of the new placement to the flange. Ie exhaust and all needs to move back 1" You will need to make a 1/2" spacer for the manifold/flange because the sec won't mount since the compressor will hit the manifold. Then, all you have to do is make a mounting bracket to support it all because the one that comes on the hot pipe is no where supportive. IMHO, 75lbs for the primary 40lbs or so for the sec all the pipeing and engine stress puts alot of dead verticle stacked weight 2' high on a 1/4" th x 1 1/2 h piece of flat stock.
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