Hx35 hybrid or hx40? - Dodge Cummins Diesel Forum

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post #1 of 19 (permalink) Old 07-03-2013, 11:33 AM Thread Starter
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Hx35 hybrid or hx40?

right now I am in the process of figuring out which turbo is best my truck has 191 delivery valves, mack plug, timing@16.5*, number 100 fuel plate, and hx35 turbo wastegated to 30 pounds of boost. What is the best choice for me I have an hx35 laying around and I have an hx40 off of an 8.3 liter cummins what is the best decision for me? thanks guys.


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post #2 of 19 (permalink) Old 07-03-2013, 01:04 PM
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If the hx40 Is the 16 cm I would use it, or consider selling both and getting a new one of the size you want

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post #3 of 19 (permalink) Old 07-04-2013, 02:26 AM
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Put the hx40 on Lol

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post #4 of 19 (permalink) Old 07-05-2013, 08:38 PM
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If you want a slow-spooling dog, I'd say go with the 40.

As far as the hybrid - I had one and loved it.

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post #5 of 19 (permalink) Old 07-05-2013, 10:23 PM
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I don't think the hx40 would be bad honestly. Friends in what you want and what you plan to do

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post #6 of 19 (permalink) Old 07-05-2013, 11:05 PM Thread Starter
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Yeah I just would like a decant turbo that won't fall apart and that's on a budget my truck isn't a 600hp street truck just a little tuned up that's all

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post #7 of 19 (permalink) Old 07-06-2013, 12:50 AM
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Try the hx40 if you don't like it make a hybrid

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post #8 of 19 (permalink) Old 07-06-2013, 02:23 AM
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Far as I know the hybrid compressor wheels are just hx40 wheels. So both should flow the same on the compressor side. Personally I like quick spool and the hybrid should spool faster and easier than the 40 so I'd probably go that route. I'd drill out the gate port as big as I could though to help hotside flow. Airflow wise though, both should be a pretty good match for your fuel.

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post #9 of 19 (permalink) Old 07-06-2013, 12:04 PM Thread Starter
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I just want to be able to build my boost with without it being hot air I know the hx40 will be fine at 40 psi but what's the most a hybrid can handle ?

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post #10 of 19 (permalink) Old 07-06-2013, 01:30 PM
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I just want to be able to build my boost with without it being hot air I know the hx40 will be fine at 40 psi but what's the most a hybrid can handle ?
I am running the HX35/40 hybrid, the manufacturer said it was good for around 40 PSI. The problem with the HX40 is the shaft has a reduced diameter at some point and is known to break, that is why the hybrid is better as it uses the HX35 shaft which is the same diameter all the way, but has more flow with the HX40 compressor.

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post #11 of 19 (permalink) Old 07-06-2013, 02:53 PM Thread Starter
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Ok good then so hybrid seems better choice for me

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post #12 of 19 (permalink) Old 07-06-2013, 08:10 PM
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When I built my hybrid I actually used an hx40 cartridge that was from an 8.3 and the aftermarket wheel was bigger than the hx40's wheel. I did swap the wh1c shaft and turbine housing onto it though and ran 40 psi

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