View Single Post
Old 03-20-2018, 01:01 PM   #7
SlimTim
Senior Member
 
Join Date: Feb 2016
Location: Portland
Posts: 146
Default

International built the 6.0 for Ford and the VT365 and Ford 6.0 do share many common parts. Unfortunately for us Supernova owners one part that is not common is the ECM logic. This is unfortunate because it excludes us from using the multitude of Ford 6.0 engine programmers currently on the market.


The comment about the VT365 being tuned way down is true in some regards, but not when talking about the VT365 in the Supernovas. I have listed the Supernova VT365 and Ford 6.0 specs below.

International VT365 as configured in the Gulfstream Supernovas
Peak HP: 300 @ 3000 RPM
Peak Torque: 530 lb-ft @ 1800 RPM
Ford 6.0
Peak HP: 325 @ 3300 RPM
Peak Torque: 560 lb-ft @ 2000 RPM (2003-2004)
Peak Torque: 570 lb-ft @ 2000 RPM (2005-2007)


If you look at the School Bus forums you will see that the VT365 did have its share of issues, along with the Cummins ISB, DT460, Cat's and etc. However, I am a strong believer that both the VT365 and Ford 6.0 are good engines that just suffered from a bad exhaust gas recirculation and oil cooler design. If you look at how the oil to water cooler is key to the EGR, turbo, HPOP and injectors you may agree.

In regards to deleting the EGR, it may, or may not help. The EGR recirculates a portion of the engine's exhaust gas back to the engine cylinders thereby diluting the O2 in the incoming air stream. This reduction in O2 lowers combustion heat and peak combustion temperatures and this intern reduces NOx. NOx is primarily produced at high cylinder temperatures and pressures. So when the engine control module (ECM) detects conditions conducive to creating NOx it sends a signal to open the EGR valve to cool down the combustion. It’s impotent to understand a key responsibility of the EGR system is to assure the oxygen-to-fuel ratio is suitable at all engine operating conditions to meet performance and emissions objectives. And that the total mass of oxygen trapped in the cylinder is appropriate for the fuel injection quantity. So, removing the EGR does not necessarily mean you will get more HP or lower your exhaust temperatures or extend the life of your engine. Assuming your EGR system was working correctly prior to installing the EGR delete, you may only get a check engine light for all the money you have spent. However, installing the delete will assure you won’t have to worry about an EGR cooler or EGR valve failure in the future. Just be mindful deleting the EGR is illegal in all 50 states.
SlimTim is offline   Reply With Quote