COMPOUNDS, TURBOS, Uncategorized
Dyno Testing the New Power Driven Diesel Compound Turbo System
Oct
We recently launched our compound towing turbo setup and we wanted to show you how it performed on the Dyno. Before we jump into the test, we wanted to give you some background on the new compound turbo and why we wanted to build this specific setup over some other twin turbo kits available.
The Power Driven Diesel Ultimate Towing Compound Turbo uses a BorgWarner K27 and a BorgWarner SXE369. It is specifically designed for 1994 – 2002 2nd gen Dodge trucks. The goal was to get the fastest spooling possible on a 600hp – 650hp truck. The SXE369 flows almost as much on the compressor side as the BorgWarner S475, which is a popular turbo for compound setups, but has a much tighter turbine side. For a 600hp truck, this is going to provide much faster spooling, more boost on the road, and a lot better EGT towing, compared to the S475 setup.
We know a lot of compound turbo sets use the S475 in their setup. The problem is the turbine wheel will support 1100hp, so in a 600hp – 650hp truck, the S475 has too much lag in our opinion. We feel the twin turbo setup we have here is the best, fastest spooling setup for a 650hp truck.
With this kit, we also wanted to avoid a number of issues and annoyances we see with other kits. First, we didn’t like how many kits require you to relocate the battery. The Power Driven Diesel setup lets you keep the battery in its stock location. This kit also allows you keep the automatic transmission heat exchanger in place. Finally, this twin kit lets you access the oil filter without removing any tubing.
Now that you know why and how we built this compound kit, here’s what you came for, the test. We ran this test the same as our past ones, an unloaded 1300 – 3200rpm run.
1300 – 3200rpm Unloaded Run
We ran the exact same test as other turbos so we can quickly and easily compare to single turbos.
Peak power on this was just over 690HP at 2500rpm. It would probably peak earlier on the street, but the unloaded test peaks here. We have it tuned really aggresively to max out the system. Most would not tune their street trucks this aggressively but we wanted to see how hard we could push this system.
Torque peaks around 1470 ft lbs at 2300rpm. These are great numbers from this setup. We wouldn’t expect numbers quite this high on normal street setup, but our aggressive tuning pushed it higher than expected.
By time, the run went from 1300 to 3200 rpm in 9.2 seconds. Torque peaked at about 6 seconds into the run.
Lets compare this to the SXE362, which is a quick spooling single turbo capable of over 500HP. The red line is the compound system and the green is the SXE362 system. Obviously we get more power and torque in the compound system because of the larger turbo. Whats really interesting is how much quicker the compound system is. The SXE362 takes about 8 seconds, or two seconds longer, to get to peak torque.
When we add the SXE369 to the comparison we see very similar power, but more torque on the compound system. What is really interesting is the time. Each run started at 1300rpm and the compound system takes about 9 seconds to complete the run. The SXE362 takes much longer at 11.6. The SXE369 takes around 18 seconds, because it takes so long to spool. This is a great example of turbo lag.
This is whats great about the compound turbo system, quick spoolup and big power. From a standstill or pulling trailers, this is the advantage of compounds, all the power of a big single turbo, but so much faster.
Don’t wait, get this setup for your truck to in the Power Driven Diesel store.
If you have questions about this turbo leave them below, call us at 435-962-9555, or visit our contact us page. Follow us on FaceBook, YouTube, and Instagram to see more turbo tests.
What’s the fueling set up for this truck? DV’s and injectors?
Fueling for this truck is rather aggressive. It has basically our 650 fuel package with some bigger injectors. The injectors on the truck during the video were 5 X .020’s. We have the same turbo set on another truck with our 5 X .014’s and it makes similar power.
at what point do you have to worry about windowing a block using compounds?
Really its the torque that kills things. I am not sure if there is a set point but I wouldn’t be concerned at under 1750 ft/lbs. of torque to the tire. Not saying that people haven’t hurt their blocks at that level but I have had my wet blocks at higher torque numbers than that without any issues. If you are making 1750 ft/lbs and are tuning for a good engine life you should be at or above 1000 HP.
Really interested in this setup. Do you offer a kit with piping?
Absolutely! Look Here,
https://powerdriven.wpengine.com/product-category/turbochargers/power-driven-diesel/compound-turbo-kits/
This would be stellar to see a s362/s475 or 357/475 or even stock hx35 or he351/475 comparison just to prove how much faster this combo is. Its gotta be ridiculously faster spoiling.
We have a lot on our plate right now with getting ready for UCC, but we are planning to do tests such as that sometime after