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- #1,081
Well, after 25k miles of towing, I finally left her home, due to an issue.
10-15 miles into my drive, I had a boost leak, EGTs skyrocket, I limp it back home. I boost leak detect it, have a leak from the tube exiting the turbo. I tighten it up, test drive, leaks again. Swap the entire boot, still leaked. I lost enough time I said I gotta hit the road, loaded up the expedition (has max tow package) and hit the road.
I was 1200 over GCWR (15,500 lbs) and like 200-300 lbs over rear GAWR.
It did the job well! Did it have unlimited amounts of power? No but it did the job, and didn’t feel sketchy. Would I want to wear out my wife’s mom mobile? No….so this won’t be a frequent thing but it’s nice to know it can do the job in a pinch.
Now…I still need to go in and figure out what’s leaking. Admittedly, I usually do a test tow run before leaving after major changes and I didn’t this time.
I did valve springs, pushrods, the 11+0 wheel and had many boots off since that work. I usually have to do a test run and readjust boots after work being done
It brings up another question, is it time to go back to the stock drop in turbo?
The T4 setup was top dog because drop in turbos sucked ass for 7.3s for 20+ years. The downside to T4 was usually poor fitment and guys blowing boots (like I did.)
In the last few years KC turbos has been pushing the envelope and doing ground up redesigns with the drop in style turbo and on their 3rd generation stage 1/2 turbo it seems they have finally caught up to or surpassed T4 performance.
I thought my T4 setup with an SXE 363 kicked ass on the top end at from 2200 rpm up, but was laggy, so I further complicated things with a VGT, and then the 11+0 wheel to stop surging issues.
So now I have a poorly fitting, well working, difficult to work on roadside VGT with an SXE363 setup.
Do I find the leak, and move on? Or go with a Gen 3 stage 1 setup. These are bigger injectors than what I have but you can see the difference. (238cc with 100% larger nozzle, and I’m 180cc 30% larger nozzle)
This is also 364.5/73/.91 and I’m 363/73/VGT and my VGT should spool up better than that too.
10-15 miles into my drive, I had a boost leak, EGTs skyrocket, I limp it back home. I boost leak detect it, have a leak from the tube exiting the turbo. I tighten it up, test drive, leaks again. Swap the entire boot, still leaked. I lost enough time I said I gotta hit the road, loaded up the expedition (has max tow package) and hit the road.
I was 1200 over GCWR (15,500 lbs) and like 200-300 lbs over rear GAWR.
It did the job well! Did it have unlimited amounts of power? No but it did the job, and didn’t feel sketchy. Would I want to wear out my wife’s mom mobile? No….so this won’t be a frequent thing but it’s nice to know it can do the job in a pinch.
Now…I still need to go in and figure out what’s leaking. Admittedly, I usually do a test tow run before leaving after major changes and I didn’t this time.
I did valve springs, pushrods, the 11+0 wheel and had many boots off since that work. I usually have to do a test run and readjust boots after work being done
It brings up another question, is it time to go back to the stock drop in turbo?
The T4 setup was top dog because drop in turbos sucked ass for 7.3s for 20+ years. The downside to T4 was usually poor fitment and guys blowing boots (like I did.)
In the last few years KC turbos has been pushing the envelope and doing ground up redesigns with the drop in style turbo and on their 3rd generation stage 1/2 turbo it seems they have finally caught up to or surpassed T4 performance.
I thought my T4 setup with an SXE 363 kicked ass on the top end at from 2200 rpm up, but was laggy, so I further complicated things with a VGT, and then the 11+0 wheel to stop surging issues.
So now I have a poorly fitting, well working, difficult to work on roadside VGT with an SXE363 setup.
Do I find the leak, and move on? Or go with a Gen 3 stage 1 setup. These are bigger injectors than what I have but you can see the difference. (238cc with 100% larger nozzle, and I’m 180cc 30% larger nozzle)
This is also 364.5/73/.91 and I’m 363/73/VGT and my VGT should spool up better than that too.
