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Discussion Starter · #1 ·
Gents, Ive gone through the archives (several years lookback) and was able to extract some baseline understanding on the Silver 453T turbocharger;
  • Detroit p/n 8926101 , T04E03 (latest iteration)
  • Compressor: Ind; 56.6mm, exd; 74.9mm, trim; 57, 6 blades
  • Turbine: Ind; 63.5mm, exd; 73.5mm, trim; 74, 11 Blades
  • Turbine housing: .81 A/R, T4 open plenum/scroll
  • No map published, that I aware of.

Helping a friend pick a more modern replacement bolt-on turbo for his silver 453T engine with following upgrades/mods;
  • 7A77 injectors, oem timing (thanks to past recommendations on this board)
  • Gen2 dodge intercooler
  • 4" downpipe & full exhaust with large truck muffler.
  • original silver blower with bypass (stock 5 to 8 psi spring I believe)
  • 3/4 ton pickup (~6500 lbs), 2wd, .78 OD, 3.54 rear, 33" tires, ~ 1800rpm cruise @ 65mph, occasional < 10k towing.

He's looking for a slight bump in power with smoke free cruising (slight hazing tolerable upon acceleration), reliable & shooting for ~20mpg cruise.


Im leaning toward suggesting the Borg Warner S257SX-E turbo with the following specs;
  • Compressor: Ind; 57.17mm, exd; 76.2mm, trim; 56, 7 blades
  • Turbine: Ind; 61.43mm, exd; 70mm, trim; 77, 10 Blades
  • Turbine housing: .83 A/R, T4 divided scroll (housing not available in open scroll apparently, to match the open plenum 453T exhaust manifold)
  • Max Flow Rate: 64 lbs/min


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Any suggestions or comments from the knowledge base on this board. Thanks for the input.
 

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Discussion Starter · #3 ·
Thanks Dougal,
Your input has been invaluable to so many on this board over the years. There's a .68 A/R housing available in T4 (divided scroll as well), should produce quicker spool up and still stay within acceptable back pressure limits. Ill look into it.
 

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Discussion Starter · #5 · (Edited)
Another option may be the Garrett GTX3576R GEN II :
  • Compressor: Ind; 58mm, exd; 76mm, trim; 58, 9 blades, forged billet
  • Turbine: Ind; 62mm, exd; 68mm, trim; 84, 11 Blades
  • Turbine housing: .82 -or- .63 A/R, T4 open plenum/scroll
  • Dual ceramic ball bearing, water (& oil) cooled CHRA
  • Max flow rate: 67 lb/min
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However, the price for these is not for the faint of heart. Over $2000 for genuine Garrett, or around $500 for the Chi'com knockoff versions (Pulsar etc.), which actually have mostly good reviews.

The "84" trim spec on the turbine wheel (vs. "74" of the oem TO4E03) indicates higher flow/slower spool, but the lighter billet wheel and better overall design improvements may offset that difference. Otherwise, a tighter .63 T4 open scroll housing is available for this one as well. As always, I'd run a pyrometer and pressure gauges to monitor EGT's, boost, drive, airbox pressures.
 

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Discussion Starter · #7 ·
I believe Ive finally stumbled across the flow map for the Garrett TO4E "57" trim as installed oem on the Silver 453T. The 453T Silver's compressor wheel specs at Ind; 56.6mm, exd; 74.9mm, which comes out to a 57 trim. Could be coincidence, but the data points seem to be within range.

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Next level up in aftermarket, would be the Pulsar "Next Gen 363D" with 2.5" compressor hose outlet (v-band option), 4.21" Marmon turbine outlet. This is Pulsar's equivalent to Borg's S363.

Pulsar 363D
Compressor: Ind; 63mm, exd; 87mm, trim; 52, 7 blades, forged billet
Turbine: Ind; 73mm, exd; 80mm, trim; 83, 10 Blades
Turbine housing: .88 A/R, T4 open plenum/scroll
Dual ceramic ball bearing, oil cooled only ..no water cooling CHRA
Max flow rate: 100 lb/min
Doesn't appear Pulsar publishes their compressor maps.


Whit, do you know what turbo Jason is currently running with those N90's ? is he contemplating the S363 to clean up smoke with those sticks ? From the archives it looked like he was running a TO4B "H" trim at one time. I'm assuming one would need at least N90's to run this S363 with minimal lag. Id be worried about low rpm smoke and response, or run the DD oem fuel modulator to cut back on the fuel in the lower rpm ranges ..again, to obtain no smoke, minimal hazing.
 

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Discussion Starter · #11 ·
Do not intent this thread but while on this subject thought to ask.
Any suggestions for factory 3-53T turbo engine?
Would a waste gate turbo be the way to go with 2 stroke?
Bob G. In Virginia
Start a separate thread with your question on the 353T ..."353T - modern turbo suggestions ?"... or something similar and Im sure you'll get some experienced folks chiming in.
 
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