Competition Using HX 35 in twin setup

[ProMac1K]

Wow, that does look like a tight fit. You're right, as long as it works.



Let me ask a few questions, if you don't mind, about this setup?



What boost numbers does this setup run at efficiently? Is it usuable with the stock headgasket, at least temporarily?



What kind of fueling mods are required to run this setup? I know the question should be the other way around, but is there an underfueled level at all with this setup?

 

[Mark_Kendrick]

boost is based on fuel available and proper wastegate adjustment. When properly adjusted you should make 1# of boost for every 10hp give or take 3-4 psi. If the wasegate is grossly maladjusted and you have the fuel 100+ psi is easy to achieve. I've actually reclocked a 35 with boost



This kit will accomodate an hy-9(stock auto turbo, good to ~550hp), hx35-12 or 14 (good to 600-650), or a 35-40 hybrid (good to 650-700) without any changes to the tubing.



These are ball park figures. They depend on the rest of the truck. If your goal is all out hp and you plan on makin 700hp I suggest you plug down the $$$ for a bigger set of turbos. It is posstible to make 650-700hp with these but you are at the egde of capability of the set of turbos and a 700hp truck on these turbos would likely make more with a bigger setup. You have to fight for 700hp off a small set of turbos where a larger set would accomodate the power much easier.



ALL THAT BEING SAID... a stock headgasket SHOULD last to 55-60 psi which means a stock truck with 100-120hp injectors a timing box & fueling box (or combo) with good exhaust and a transmission/clutch to put it to the ground should be a 495-525 hp truck even if using an hy-9.



You will see significant gains(5-20% or more) on any truck that has 1400*+ pre-turbo EGTs. The worse the EGT problem the more you will gain from a better induction system.



Thanks,

Mark

 

[ProMac1K]

I just wanted to see if I was underfueled for this setup. Right now i've got 1500°+ plasma-torch EGT's with the stock turbo setup, I think the plate is set back too. Also have a dark exhaust haze at full boost. I've got a calibration-tweaked 180 pump with a 6 plate and an "adjusted" governor. Don't know what to compare it too, nor do I know how many HP I can get out of it in it's current state, but I know it's pumping out more than a pump with minor adjustments, a TST Plate, and 191/022 DVs. I'd like to put the pump back on the bench because I only wrote down a few values (full-load/part-load delivery,rack travel,governed speed), also would like to do some more adjusting if I go this twin route. For injectors, I just have some Bosch 370's. I have no clue where i'm at for HP right now, possibly 350-375 HP.



Right now I would like to stay under 60 psi so that I can retain my current boost gauge (j/k :-laf big deal) and take it easy on my "quench" sealing area. What's the rule for adjusting boost on something like this? Does the wastegate act like a single-charger gate? Is the boost controllable? If so, i'd even be happy with a boost level for a cool 500 HP level. I can always work up to HP if need be. Explain more on how you reclocked that 35! :-laf



I like the sound of being able to switch top turbo's (35 to start with and a 35/40 possibly in the future). I seriously think the 35/B2 kit is plenty for what I want or need, but a 35/40 should do it if I would need to upgrade. Just a hint to 'ya, I'm basically talking from what i've seen on here, maybe also out of my *****. I'm not experienced at all when it comes to what works for turbo's. I'm not stupid, just like to read on here, compress the data, and then talk. The HX-35 should do it!



Is their anyway to compare mid-range (highway speed) EGT levels, and high-end range EGT levels to HP levels, or vice-versa, when talking about a set of twins, more specifically these twins? Right now i'm seeing 800° EGTs at 60 mph. That's a respectable temp, right? Just out of curiosity, what could one expect for a temp change with this upgrade? I know there is a lot of variables.



Oh, transmission is taken care of too. Just got the DTT treatment and am on the middle of my 1000 mile break-in.



Thanks for answering my questions! Oo.



Thanks,

Trever

 

[Mark_Kendrick]

The midrange EGTs are dependent on load.



The 35 twins are usually better than almost all other twins for towing. they are spoolable well below 2000 rpm and that makes them perfect for heavy towing. You will be able to control EGTs well past the capacity of your radiator. You can sustain <1350* egts at ~500hp almost indefinitely but you'll boil off all the coolant in just a few minutes.



54# of boost for over a minute while running up a grade at 27000gcvw at 82 on the cruise is :cool; . Coolant temps will start to rise sharply after about 1min.



Seeing double??

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[PROSTAR190]

Sorry did not get to post the pics before I left for training last week. Never posted a pic before hope this works...





Well it does not like the file type for some reason...



Dale



http://www.kendrickdiesel.com/dalespics.htm



Here is a link to the pics on Marks website

 

[PROSTAR190]

Mark posted some pics on his site.





http://www.kendrickdiesel.com/dalespics.htm



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