5.9L 24V Performance Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps Related To Performance And Longevity

HY35 to HX35

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Old 02-20-2013, 06:20 AM
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Default HY35 to HX35

Hey everybody new to the forum and this is my first thread so here it goes. I'm looking to swap the old HY35 out with an HX35. First and foremost is there anything special needed for swap, or is it just a clean unbolt old, bolt up new? And second any ideas on where to find a decent used one?
 
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Old 02-22-2013, 12:57 AM
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It bolts right in
 
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Old 02-22-2013, 07:38 AM
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HX35's sing nicely.
Hope you like it when you get her in!
 
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Old 02-22-2013, 07:47 PM
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Yes it does bolt exactly in place. I did the same swap on my automatic as described in my sig. When you do the swap make sure to change the oil return gasket, remove silencer ring, etc. To make it sing a little more a bigger downpipe, intake, manifold will get it done and lower egts, improve flow and make denser air. If you are running hotter injectors it will throw a overboost code, mine throws one and i have stock injectors at higher rpms.
-You can probably find a used one off a H.O. in craigslist or if ur lucky in a junkyard! Sometimes diesel shops will sell a rebuilt one or you can take a broken one in and get it rebuilt.
 
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Old 02-23-2013, 04:51 AM
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Alright thanks for the info guys. Still hunting for an HX as of right now, but glad to hear its gunna drop the EGTs and sound good doing it haha. Also looking forward to more boost cause right now my HY won't go over 26psi.
 
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Old 02-23-2013, 07:42 PM
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Originally Posted by infinitive90
Alright thanks for the info guys. Still hunting for an HX as of right now, but glad to hear its gunna drop the EGTs and sound good doing it haha. Also looking forward to more boost cause right now my HY won't go over 26psi.
Yeah you will hit 35psi or so on level 5 if you put a boost elbow in the wategate line. It shouldn't throw any codes with the Edge programer.
 
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Old 02-27-2013, 09:24 AM
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How can i plug he waste gate? any cons to doing this?
 
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Old 02-27-2013, 10:55 AM
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And thing that may happen if you plug it or block it off is possible overboostin that only if you got decent stuff done to your engine. I have an adjustable elbow on mine and have it blocked off. Hasn't hurt mine.
 
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Old 02-27-2013, 11:42 AM
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Adjustable elbow? Explain.
 
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Old 02-27-2013, 01:09 PM
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The hx35 has a small brass elbow comin out of turbo housin with a rubber hose goin to the wastegate. Some guys just disconnect hose from wastegate side and kink it over and zip tie it closed. That doesn't let the wastegate open. Or others use an adjustable brass elbow that has a small screw you can turn in and out depending on how much boost you want to get. You can find those elbows all over the Internet just type in cummins adjustable turbo elbow and should get a lot of places pop up that sell em. I got mine off eBay for 13 bucks
 


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