SXE Turbo Dyno Testing - Dodge Cummins Diesel Forum
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post #1 of 77 (permalink) Old 08-01-2016, 09:26 PM Thread Starter
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SXE Turbo Dyno Testing

This week we decided to perform multiple back to back runs on the dyno with several of the popular 300 series SXE turbos with multiple exhaust housings. The purpose of the dyno runs and testing is to compare spool-up and overall power potential on our 1995 12valve Cummins test vehicle, and overlay dyno graphs to help customers make educated decisions on their turbo/housing selection.

Truck Facts:
1995 Dodge Ram 2500 2wd Auto w/3.55 gear ratio and 33" BFG AT's
290k miles, stock engine with original head gasket/retorqued headbolts
PDD 650 HP 47rh Automatic Transmission
PDD 5x018" sac 145* injectors with edge filters removed and mild needle work
Farrell Diesel 640 cc maxed 215 pump set to 25* timing
Hamilton 182/214 cast cam
PDD Beehive 165# valve springs, retainers, locks
PDD 7/16" .120 wall stage 1 pushrods
24v OEM Tappets
PDD Hotrod stock-style Cummins lift pump
PDD 15w-40 Conventional Oil
AFC LIVE tuned to maximum HP on each turbo, anywhere from 500 to 600 cc's typically made the best HP.
PDD Turbo Tuner for wastegate tuned for max power on each turbo, anywhere from 38 to 55 psi depending on the turbo/housing combination.

Dyno:
Mustang MD 1750 dual eddy w/52" rollers and 1200hp worth of eddy current brake capacity.
5700' elevation
90*F high humidity summer monsoon weather


There will be at least two graphs posted for each turbo/housing combination to display the following tests:
1. Unloaded run 1300 RPM to 3200 RPM (meaning 3000# drum weight only similar to an overweight DynoJet)
2. Loaded run 1800 RPM to 2800 RPM (dyno eddy current set to simulate a 5500# load plus wind resistance for a Dodge Ram brick at 70 to 105 MPH)


The first video is up and posted to our homepage at Diesel Performance | Power Driven Diesel
We will upload a new test video each day so check back to our website for the earliest updates, but I will also post updates to this thread in the evenings when I get free time.

The first turbo is a 362sxe/68 turbine with a .70ar T3 wastegated housing and HX40 downpipe bolted to the stock cast T3 manifold.





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post #2 of 77 (permalink) Old 08-01-2016, 10:40 PM
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Thank you, that is useful. The sx-e chargers are nice units.

-2008 6.7l QCLB 4x4,g56,J-67(23ME),valair DD,64.5/72/14,2nd gen mani,arp 425's,boost and pyro... -1993 W250 CCLB...
-1996 brewed s14 w/ 386 rwhp & 341 rwtq @19psi twinscroll baby!!!(gt3076r)
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post #3 of 77 (permalink) Old 08-02-2016, 01:35 AM
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This is something I always wanted to do/see. Thank you for sharing on the forum.
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post #4 of 77 (permalink) Old 08-02-2016, 02:56 PM Thread Starter
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Today's test was the 364.5 SXE w/68mm turbine and the same .70AR T3 gated housing. This video overlays graphs to compare the 362sxe vs 364.5sxe both on total peak power, average HP, and spool time to reach peak torque.

Feel free to discuss the data/graphs, share personal driving experiences, and ask questions.



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95' Junker Drag Truck - 10.85 @ 129 MPH
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post #5 of 77 (permalink) Old 08-02-2016, 08:41 PM
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you guys continue to out do everyone in diesel tech and testing... The info here is priceless for those of us looking to keep it moving forward. Thanks in advance for the compound setup testing you guys are planning next?!? insert sarcasm here

Really surprised at the small difference between the two. with the timing set at 25* which is what im running on the compounds, i would have expected longer HP hold past the 2800 mark.

Thanks for all you guys do/continue to do!

1997 ECLB, compound HT3B/HX35, 5x.018, Unknown DV, 110# valve springs, full billet 47re and the other usual stuff...

Last edited by Jfiedler; 08-02-2016 at 08:50 PM. Reason: mizzspelled some stuff
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post #6 of 77 (permalink) Old 08-02-2016, 09:04 PM
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I really need to get mine on the rollers...
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post #7 of 77 (permalink) Old 08-02-2016, 09:45 PM
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Thanks so much for y'alls time on all this. I'm currently looking at a few of those turbos and this helps the decision process along. Nice to have a community where this kind of testing is possible.


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1996 12V 4x4 reg cab auto
ATS trans/TC, BHAF, 3k gsk, 5" straight pipe, 35" bfg AT
Fuel plate ground to #100 FF. Egt , trans, boost, fuel psi gauges.
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post #8 of 77 (permalink) Old 08-02-2016, 10:38 PM
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This is very help info thanks. I can't waite to put afc live on my 12v
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post #9 of 77 (permalink) Old 08-03-2016, 12:10 AM
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I am sure I have seen Youtube videos of this truck with other turbos on it, but I can't say for sure because I thought it was a manual. Any S4XX dyno runs that can be laid over the top of these two dynos?

2011 2500 CC ST G56 LB MM 5" Flo-Pro 463
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post #10 of 77 (permalink) Old 08-03-2016, 01:54 AM Thread Starter
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Quote:
Originally Posted by #40Fan View Post
I am sure I have seen Youtube videos of this truck with other turbos on it, but I can't say for sure because I thought it was a manual. Any S4XX dyno runs that can be laid over the top of these two dynos?
This truck is the dyno mule, I'm sure it will eventually have an S400 or big Garrett Ball Bearing unit on it eventually with overlaid graphs...

And yes, the HP falls quickly for sure, we originally planned to test at 20* timing but the first graphs fell off so quickly we figured something had to be wrong so we advanced the timing to 25* and it helped a little but not much.

We plan to do some compound turbo testing so that will be fun to overlay and examine as well.


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post #11 of 77 (permalink) Old 08-03-2016, 08:59 AM
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Originally Posted by cumminsdog View Post
I really need to get mine on the track...
Fixed it.

Jacob, "strictly business" 01 grumpy sob, Calibrated Addiction, Infinite Performance, Farrell Diesel, 97 rclb
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post #12 of 77 (permalink) Old 08-03-2016, 01:01 PM
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Ignorant questions to follow:

So this is a completely stock head?

How does the cam compare to a stock cam (what's different)?

Any way we could get a turbo pressure trace and EGT line on the graphs?

Thanks for doing this. I love to see real data.

1995 Suburban w/ 1995 Cummins from a bus (P7100, H1C 54/60/18, no WG or IC, #100 plate, mild AFC tuning, adjustable OFV, 3K GSK), NV4500, FF14 bolt rear, Ford Dana60 front axle, 4.10s, 33s.
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