The lower boost could also be from timing too far, right? If it's too far advanced another tune backing it off a few deg could gain the boost back, drop cyl temps, lowering water temps. That is if no boost leaks. Just speculating
Turbo for a hot 6nz
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by matneyenterprises, Sep 6, 2021.
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Thanks. -
w9l Thanks this.
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Check your coolant pressure, then you will know. You may have to run down road with a gauge on mirror bracket
matneyenterprises Thanks this. -
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Just throwing this out there- I had an 05 379 with an Acert that had been 6nz,d. ECM, head, low comp industrial pistons, single turbo, blah, blah, blah. Supposed to have been set around 600hp. It kept wanting to heat and fast even with new hi perf radiator and cac. Kept me scared to death of frying it. But I also started to notice fan wasn't always kicking on at the right temp. Got to checking with temp gun and reading ecm events and decided gauge must be off. Replaced both temp senders and gauge and it seemed to help for a few days then same nail biting xx. So I bought a Scangauge D. I found it handy for lots of functions but mainly water temp. I could see what the ecm was reading which pretty well coincided with my ir temp gun checks. Just gave up on the Peterbilt dash gauge and watched the readout.
matneyenterprises and lester Thank this. -
I kinda wonder if my bumper is affecting airlflow. The one in my avatar deal is what I'm running and it sure seems like 12" of pipe blocking the inlet to the grill could be enough to slow some air down. But maybe I'm just spending too much time thinking about it. -
So these other guys that are running hot cats are theirs tuned by the guy that tuned yours?
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