Stealth KS Hx40

[KWIKKURT]

Due to popular demand: For those of you that like the Stock OEM look. I can now make you a KwikSpooled 12cm2 Hx40 that looks just like a used hx35. Complete with silencer ring! It is totally stock OEM in appearence with the Performance of a KSHX40.



Kurt

Mild to Wild Diesel Performance.

 

[yogibear]

How about w/14cm2 hsing. w/ silencer ring? I don't like that turbo whine. Getting too old for that $#it!!

 

[KWIKKURT]

Sorry YOGI, There is not a HX35 14cm2 Dodge OEM housing. Only 12cm2's



On the other hand you were asking about the " KS B-1 BOMBER TURBO" Right now it's still in developement and limited to above the 500HP mark. And the damn thing is TOO QUITE!! If I can get it setup for us under powered 400-450hp trucks it should not be much "WHINERer" or interfere with hearing aids either .....

 

[Briar Hopper]

I just bought a sticker for my truck, at a truck stop, of all places. It says "If it's too loud, you're too old!" Intended for young'uns with them ground-scraping, japanese-built rolling boom boxes, no doubt. But it'll do just fine, attached to a magnetic backing and placed just above my dual side exhaust.

 

[Big White Beast]

Kurt, I have a question...........

I have a HY turbo now and it makes 31 # boost. My EGT's never get above 1050 pre.



Since the install of my DTT stuff the lag is noticeable. Not that I rabbit start much being a work truck and all, BUT, what would the lag be like with the 12cm² housing compared to the little 9cm²?



I know the DD2's could use a little more air. But is the benefit of the larger turbo only when WOT. I'm still confused on the whole Volume/Pressure thing.



In normal driving will I get more air even at a lower boost level?



10K lb truck and don't tow often. EGT's right now don't seem to be a concern as much as smoke on take off. Damn tree huggers out here.



TIA,

Garrett

 

[KWIKKURT]

. Big White Beast ... To be honest I haven't driven a truck setup like yours. I would think that the lag would have to be more because of the larger housing and the wheels of the HX40 are heavier so they would spool alittle slower. I have driven a Auto equipped with a PEcomp and my KS 12cm2 turbo and the lag was not bad. It would begin spooling by 1500 rpm and boost would rocket up to 38psi then you would just "Hold ON" I am jealous of the "Kwik" accelleration that the autos have over the manual trans.



After the boost starts the Torque Pull of the Cummins is much stronger "seat of the pants meter" with a KS Hx40. It would be from the cooler & denser air charge from the hx40. The air charge was 100+ degrees cooler on my ETH and the drive pressures will be as much as 12 to 15psi lower than the hy35 meaning more hp!



What area of the country do you live? It would be nice to get your truck on a dyno an swap in a KwikSpool to see the actual differences. I think we can make a hy35 into a KS12cm2 Stealth model

 

[Bob Wagner]

Garrett, this is what you need

http://www.piersdiesel.com/Hx35.htm

 

[Forrest]

KWIKKURT - Can you pls explain what components make up this turbo? Is it simply an HX40 with the HX35 12cm wastegated exhaust housing?

 

[Fred Swanson]

Garrett, the stock HY-35 would be hard to beat in regards to reducing lag.

What is your EZ on again?

 

[Big White Beast]

EZ typically on #2

I don't need that much off the line power. Although I am talking to Edge about putting a switch in the cab. Just for those times when I might want a little more off the line power or smoke.



I was curious though if the larger turbo's did help with lower end power or only when pushed to the limit? I know my HY gets hot by the yellowing color. Cooler temps might be better but not if the lag is greatly increased. Again I don't hot rod that much.



I guess what my main question would be is: If I were driving 50 MPH and was producing 10# of boost would the volume of air be greater out of a larger turbo or the same. Or would it be that at 50 MPH I would have a larger boost # using the same amount of fuel.



I always figured that boost was kind of like back pressure. Air compressed with no where to go till the engine calls for it. I think I'll go to bed now before my head explodes. It's starting to get into the chicken/egg thing. Anyone know a good resource to read up on this?



Sorry so long but I am totally confused.



Garrett

 

[Devildog]

ask an expert....

Give KwickKurt a call the is very knowledgeable and has alot of data. 602 525 5990

 

[KWIKKURT]

Garret,



With the larger Compressor of the Hx40 it heats the intake charge (Compressed Air) less so it is cooler and denser. That means More HP at the same Boost Psi. Also for every degree of cooler air entering your engine you will have a degree less of Egt and lower combustion Cyl pressure for the same HP output. Recently I was Emailed from a Cummins Engineer and he stated it is closer to 1. 4 deg less EGT's for every 1 deg of cooler intake charge with the 5. 9L CTD.



Even on the low end you will feel more power due to the Cololer/denser intake charge. Testing on my truck I registered over 100 deg less heating of the IC with the Ks12cm2 against the stock Hx35 at 38psi. With the Stock Hx35 pushing 38 psi the IC was being heated over 400deg's that leaves alot of work for the intercooler!



Another Plus to the Hx40 (12cm2)over the Hx35 (12cm2) is the Drive pressure (Exhaust Man Pressure). The KS HX40 12cm2 has 8 to 12 psi less of drive pressure at 38 psi (IC). That also means More HP and lower EGT's and helps with Spoolup of the Turbine.





Devil Dog, I have made up some extra kits to upgrade the wastegates if you want I will send you one No Charge... ... Later Kurt - Mild To Wild Performance Products (KwikSpool Turbos)

 

[SlyBones]

Hey Kurt,



Is that drive pressure controlled by the intake side or the exhaust side, or a combo of both.

 

[KWIKKURT]

SlyBones,



The DrivePressure is effected by Engine Fueling Levels, Rpm, Exhaust Housing size, Wastegate settings, Boost levels,& Turbine wheel size etc... ... ... ... .



The lower the DP the more Hp and lower Egts you can get from a given amount of Boost (Charge Air). I have seen more HP and lower EGT's from a turbo that was producing 30 psi then the same truck with a different turbo at 38-40 psi. WHY??? Because the compressor was larger and heated the intake Charge 25% less and the drive pressure was also 25% less. So everthing was working more efficiently.





KURT Mild To Wild Diesel Perf.

 

[Matt S]

With this turbo, would you need a 4" downpipe or will a 3" work? What horsepower levels is this for? Is there a lag difference between the HX-35 vs the HX-40 with the 12 cm2 housing? I don't have an auto so I don't have a reference to your building boost at 1500 RPM. Is that where the HX-35 started to build boost? I understand your comments of less boost with more power but how much boost will this handle. I've heard the HX-40 doesn't do well with a lot of boost. How much of a reduction in EGT's can I expect? What is the silencer ring and why would I need it? I'm looking for more power with less EGT's but a 4" exhaust is a very tight fit with the transfer case in a 1st Gen.



Thanks.

 

[KWIKKURT]

Originally posted by Matt S

With this turbo, would you need a 4" downpipe or will a 3" work?

IMHO 4" is a good size for exhaust on the 5. 9CTD. I have heard of very little HP increases on Dyno's. There is no Doubt That it helps some with Spoolup, Lower Egt's, Deeper "BigRig" Sound. But having said all that - 4" is way down my list as "Gotta Have It's".



What horsepower levels is this for?



The KS12cm2 works well on a "Stage 1" level truck and above. That is anything above stock up to 450HP. Higher HP trucks still benefit from the KS Turbo but they can really use more air.



Is there a lag difference between the HX-35 vs the HX-40 with the 12 cm2 housing?



On my Moderately Fueled truck it is so close to stock spoolup I am not sure if one is different than the other. I would think it has to be 5% slower due to the higher weight of the Hx40 wheel. But as the boost comes in the power rush is greater due to the larger wheels.



I don't have an auto so I don't have a reference to your building boost at 1500 RPM. Is that where the HX-35 started to build boost?



That is where most of the Hx35's seem to come in but I have always run a PE Box and I think that is where they start coming on. And that will also Kick the Turbo into action.





I understand your comments of less boost with more power but how much boost will this handle. I've heard the HX-40 doesn't do well with a lot of boost.



I recommend that the (KS12cm2)Hx40 Turbos be set no higher than 36psi to a MAX of 40 psi. I believe Piers also recommends 36psi. The Hx40's will produce over 50psi but they are way past their design and it stresses the turbine wheel. I have yet to see a HX40 turbo fail that has not been pushed past 38psi atleast once. The one I have Blown up was pushed past 50psi for several weeks before failure. It failed at about 30psi but it failed due to overspeed. IMHO



How much of a reduction in EGT's can I expect?



It Varies from truck to truck. But all of my installations of KS turbos and stock Hx40's have reported a reduction in Egt's. If you stay with 3" exhaust you may only see 100 or 150 deg reduction. But along with a 4" exhaust and a better air induction like a Genuine Physcotty air system you may see 300 deg drop.



What is the silencer ring and why would I need it?



The silencer ring is a metal ring plate that is OEM installed on the intake side of the turbo. It quiets the whine of the stock turbo. With the Hx40 or KS Turbos the whine is not a HIGH Pitched and generally not an issue.





I'm looking for more power with less EGT's but a 4" exhaust is a very tight fit with the transfer case in a 1st Gen.



It's tight on the new trucks also but a good exhaust guy has no problem dealing witjh it. My Exhaust guy Greg (Mighty Muffler) In Phoenix Az is a "Muffler God" he fit 5" from my Down pipe back!

 

[MY6EATSV8'S]

forrest to answer your question yes, this is a stock hx40 with a hx35housing bored out to fit over the turbine wheel.

Bell turbo also offers this combo, as well as a bigger version in a h2e for the 500+hp guys.

 

[Forrest]

Ahhhh, gotcha, thanks Adam.



I'll stick with the HX40-16. With the BHAF & timing, i'm able to throw gobs of fuel at it, keep EGT in check with very little turbo lag.

 

[KWIKKURT]

Originally posted by MY6EATSV8'S

forrest to answer your question yes, this is a stock hx40 with a hx35housing bored out to fit over the turbine wheel.

Bell turbo also offers this combo, as well as a bigger version in a h2e for the 500+hp guys.

I also do a simple mod to the wastegate that helps it control psi better at 36 to 40 psi settings and we work the ports which may help a little on the top end if you have a aftermarket exhaust manifold or port out the stock manifold.



I hear of more companys almost everyday Bombing the Hx35 housings and putting them on the Hx40. I guess it must work!!

 

[MY6EATSV8'S]

Forrest you would deffinately be able to control smoke way more affectively do to much faster spoolup. You would also be able to sustain around 35psi boost at 1300 rather than 25 with your presant settup.