Recent content by GCecchetto

My C7 powered A1R shifts into 7th at 70mph under normal throttle. If I have my foot in it it’s more like 75. If I run it up to 67 and the slowly lift off the accelerator it will shift into 7th. It will cruise at 60 in 7th as long as it’s pretty flat highway and I keep my foot out of it. I’m...

But is it an interstate with a 75mph speed limit where you are driving 60-65mph? I live in the hills as well, every direction from my house is downhill on steep winding roads. Speed limits range from 25 to 40mph and on the hills that are 40mph, 3rd gear is lower than I want to be in in most...

Guess we’ll have to agree to disagree. On an interstate in the mountains I want to be able to use the exhaust brake to manage speed on the down grades and in a truck easily capable of moving along with traffic, I don’t want to be in the slow lane with my flashers on going 35mph. I can always...

Yes, but it still pretty much redlines the engine and just isn't a very "drivable" behavior for civilian use as an off road RV that will see a lot of highway miles between the offroad explorations. My plan is to have the target gear set to 4th and then manually downshift from there when needed...

Agreed, the aggressive downshift to 3rd worked for the slower speeds the military operates the trucks at, but not for trucks with highways gears or Eco hubs being driven at highway speeds. This is why I’m going to have an Allison tech change the target gear to 4th. You can always manually...

That make sense from an operability standpoint. In mode the use is likely off road in slow, steep terrain, so you would want the exhaust break operable at lower speeds.

I have visible vapor coming from mine, most noticeable when the light is just right. My motor could still be wearing in, just coming up on 10k miles. For a medium duty diesel that’s not much. In the owners manuals for the Cummins powered rams it says not to use synthetic oils at less than 10K...

Thanks, that's where my oil level is, but I was referring to gases coming out, not oil.

Okay, can someone explain what exactly is being said in the Haldex unloader maintenance instructions that says "Apply M-R spec 2527 lubricant to the unloader seals forming a 9/16 diameter ball around around each seal"? That seems like a huge amount of lubricant if they are literally saying to...

From a post I made a long time ago in the ECO hubs thread. I highly recommend the settings outlined below. I know this is the Eco Hubs thread, but since we had some lengthy discussion here about my feelings that an exhaust brake was critical for mountain driving when you have Eco Hubs installed...

For you folks with C7 powered trucks, I'm curious how much blow by you see out the breather. Thanks

Thanks! It was a labor of love and very expensive, but I no longer feel like I'm driving a ticking timebomb.

Been waiting to have this fiasco behind me before installing the final touch on my HEUI system rebuild and engine restoration. Finally did this weekend.

Thanks. Yes, the surfaces are flat. I used copper coat on the cork gasket I made initially. I will install the other gasket I have and see if that fixes the issue. If not, then I'll try the copper coat. I ended up buying two kits due to a delay in shipping of the first kit. They were both...

Okay folks, truck is running like a Swiss watch and the issues with the compressor and relief valve on the air dryer are gone, but I need advice from the brain trust here. Surprisingly, the unloader cover is leaking all the way around its perimeter. I really thought the gasket above was going to...