I like to ask questions because that’s how you learn things.
Now I can’t see how it’s a dream given the size of the turbo inducer compared to the N14 turbo.
And I say that because I had my N14 turn up a lot and with the stock turbo and it was consistent 47psi and definitely no pushover.
Also I do my own tuning
444xt Cummins First post, the good, bad, and ugly of a 444xt Cummins.
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Manurehauler, Feb 9, 2010.
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The engine in question wasn't stock when she was making that boost. She had been overhauled to about double the stock horsepower and ate 550 Caterpillar engines for breakfast on any hill or mountain we hit. She had enough power to just about lift the right front steer off the ground when you gave her everything she had. The other driver's in the company called it Rose's grin. The turbo we used was a custom one were the turbine section was undersized for the compressor. It could spin faster building more boost than it should have been able to. We basically put a 4 series holsett turbine into a stock 3 holsett housing. Instead of max of 50 we got 70. But my boss at the time had a mechanic that literally could build or repair anything and a fully equipped machine shop. I mean he literally pulled out the blocks of all the trucks and recut the sleeve bores if required line honed cranks heck he even had the capability to regrind cranks in his shop. That give you an idea of how extensive he was setup. The only thing that wasn't rebuilt in house for the fleet was rear ends as the costs of the parts was more than he could get them from a rebuilder.
2013Maxx and cummins everything Thank this. -
I did the same thing with a holset hx55. It came with a 22 centimeters squared turbine housing to run on the ism11 and I had a L10 that was turn up to all and then some so i ran the HX55 but I put a smaller backend on 18 centimeters squared to be exact and that was pushing 45psi on that little L10 and believe me it was one of the Craziest trucks on the streets here. No cat,N14 or Detroit was coming around that. Keep in mind I’m talking about dump trucks.
The L10 was in a 91 Daf -
The STC system loves clean oil, so many got a bad rap from people just neglecting them.k100 4 ever and black_dog106 Thank this. -
God prefers Diesels Thanks this.
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Most cats came with 73-75mm compressor inducers, the HT4 on the 444 has a 88mm inducer, that charger is capable of 900hp easily.2013Maxx, k100 4 ever and God prefers Diesels Thank this. -
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2013Maxx and God prefers Diesels Thank this. -
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k100 4 ever Thanks this.
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Last edited: Aug 26, 2021
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