5.9L 12V PerformanceDiscussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity
Since we had a beautiful day today here in the area I called Lloyd Mills at Mid-Atlantic Diesel Performance for a quick dyno test comparison of two sets of injectors.The air was great and light with humidity which lead to no correction factor so it ... JOIN NOW TO REMOVE TRACER
Since we had a beautiful day today here in the area I called Lloyd Mills at Mid-Atlantic Diesel Performance for a quick dyno test comparison of two sets of injectors.The air was great and light with humidity which lead to no correction factor so it made a level playing field.
The two sets of injectors we tested back to back were my original ECD 5x13's that have the sac nozzle and a new set of Smokem's 5x14 VCO nozzles.The ECD injectors have no lift increase and were set at 270bar when we had them freshened up last year when I had the head-gasket leave the building.The Smokem 5x14's have a lift increase and are set at 300bar.All runs were done uncorrected and we tried to start each run as close as we could to each other.
The best we did today with the ECD injectors was 546.51 hp/1097.45 tq.We seen 53psi of boost and the EGT's maxed out at 1610 degrees according to my Intellidash.So we allowed the engine to cool and Lloyd and Coop began the task of swapping in Weston's injectors.
After the swap was done we went back to work on the jet and the best run with Weston's injectors was 539.27 hp/1065.72 tq.We seen 54psi of boost and the EGT's maxed out at 1700 degrees with these according to my Intellidash.
Now as one can see we lost a bit of HP and a bit of Tq with the 5x14's but they are a very smooth working injector compared to my older ECD's.The 5x13's were always a bit choppy when you accelerated off the bottom and always had a rough idle to them but drove fairly well so I never concerned myself with it.On the drive home tonite across the back roads in North Central Maryland back to PA I got to experience just how much better the Smokem 5x14's really were as the drive home made them shine.Gone was the choppy low end fueling and the rough idle at stop lights and the engine has never been so smooth.When I was at Lloyd's shop I commented that I had never seen my truck idle so smooth and the when you listen and watched you never seen a wiggle or stumble at all.The 5x14's are as explosive as the old ones and yet the driveability is a ton better.The highway tailpipe haze is alot less with the new set compared to my old set and at idle it is noticeably less.
I am very pleased with what we found today and we will see how they perform driving them back and forth to work for the next few weeks.So far I am impressed and with a tad more tweaking maybe we can squeeze some more out of them.I'd like to say THANK YOU to Mid-Atlantic Diesel Performance for the use of his Dyno-Jet 248H and also say thanks to both Lloyd and Coop for their help today.I will include the charts below for you to look over and see,It was a great day and I was pleased going home.....Andy
I did forget to mention that we played a little bit today also after we installed the new injectors.Lloyd's shop always seems to bring out the HP animal in those who go there for work and to dyno,so we gave her a healthy dose of giggle gas.The truck lit the charger so hard it and charged through the powerband it lurched forward enough to loose the tach signal from the oliptical sensor which gives us the torque reading.The power number was all we got as we had to use the drum reading since the tach sensor quit reading in the middle of the run.The dyno sheet you see below is what we seen when we walked around to look at the chart..........740.03 HP..........Andy
P.S.-I told Lloyd I that NEEDED more as I was so close to my 800hp license plate I could smell it and all he could do was smile and tell me..."You'll be back for more".....LOL!
Yes it is still a single charger but the Garrett is long gone.It was sold to a owner in Western Ohio who runs it on his 79 Ford F350 Cummins Conversion and loves it.
The charger which is on my truck now is a High Tech Turbo Pro-Street 66,Its a 66/71/13SS.It was purchased from Mid-Atlantic last year right before Scheids and has been on the truck ever since........Andy
With mine being a 5 speed it actually drives quite nice.I have heard the horror stories about the low end lag on the 66 series chargers but am convinced that the stick helps and the tune is getting close to where it needs to be.With me fresh out of a divorce its my only vehicle now so it has to be able to drive well as I use it daily for work and errands.With this charger on I have been all up and down the East Coast and driven it out to the Midwest a few times and it loves the highway.It has done all I have asked and more and am quite happy with HTT and their product........Andy
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