1,000 HP CAT 6NZ - Dyno Diagnostics
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- Опубликовано: 7 фев 2025
- This built CAT 6NZ made power, but ran poorly due to a fuel issue. Watch the video to see how we diagnosed and repaired the lack of fuel pressure. The result was 870 wheel HP, which is about 1,000 HP at the flywheel.
Not even breaking 1000egts under full load with that kind of power is amazing, excellent tuning and parts combination!
And I thought my 635 HP 6nz was bad, I would love to drive that beast up copper canyon just once!
MuscleTrucker i wonder what 2500+ wheel torque could do up a hill. Probably you could push 4 wheelers up the hill
@@Full_Spectrum_Dominance not sure what my C16 was putting out before it was turned down but I pulled a 7% grade at 97k hit the top of the hill doing 65 started at 70 at the bottom, washed out 3 liners a week later.
well done ,, i love seeing big Cats on the dyno ,,personally i don't have any CAT power ,,my pulling truck is a very old Pete 359
powered by a very unusual 12V92 TA ( unusual for a truck ) ,not the most fuel efficient vehicle there is ,, but when i start climbing a long steep grade and i start passing people it's a sight to see ,cause i don't slow down on hills ,,my horsepower and torque figures are really close to this 6NZ CAT ,,it's also turned up just a bit , i'm at 820 wheel HP and 2580 torque ,, at 1300 rpm
i've got a huge weight penalty too because that huge 18 liter engine weighs 4200 pounds without intercoolers
18 liter engine?
David Joles yes indeed i didn't misspeak a 12V-92 detroit is 18 liters displacement it's a monster
@@wildcoyote34 wow,I have had several 16 liter engines but and 18 is big
yes 18 is big ,, it's also not very common the 12V92 was not commonly used in highway trucks other than heavy haulage trucks meant to pull huge loads and my truck was speced exactly that way 34K rears 20K front
with a really odd transmission setup ,,I have a 4x6 twin stick 24 speed with a 3 speed final drive
@@wildcoyote34 i know about twin sticks of 6×4 ,but 3 speed final is interesting
Got to love those big cat motors !!
And when you have the best of the best Pittsburgh power working on it !!! Had work done on my cat by them and it was one pulling machine when they got done with it!!!
Pretty dang interesting watching a diesel tractor motor running on a dyno for work, compared to a race motor for speed. I understand you want torque for both motors, but one relies on torque more than the other. Great video.
Very impressive....and you give a very detailed description....but 1,000hp flywheel? Wow....gotta love those CAT'S!!!💪💪
That’s impressive. The way a Cat pulls down to 1200 and keeps pulling is like no other truck engines.
Volvo FH 16 750 will pull even lower..
@@Draxindustries1 Yeah but it would be in a Volvo truck! No thanks!
Every modern class 8 truck engine I know of pulls down to 1150-1200 rpm
6nz c15's were monsters to begin with. Nice job on the build.
To those who don’t speak “truckereese” , I’ll translate:
This man spent a boat load of money to get these results and had only top of the line professionals wrenching on his truck with top of the line computer and tooling.
Yea but really just taking your equipment to a shop with mechanics old enough to have actually spent many year's developing the skill set required in ANY profession is key ..end up at a shop with a few 25 yr old "Mechanics" and you are butt fucked .Why well come on . if you haven't been on the planet long enough to have actually learned much well how can you .Experience over time is the key ..in all the trades bottom line...
50k
@@TheRoguelement spoken like a true jackass. I know several young diesel techs that would run circles around you and anyone you might know. Way to go Big Stupid.
With that kinda power, them EGTs look delicious!!
44boost and 800hp? Holy jeez thats crazy. CAT is a tiger
Really enjoy your content on this channel - keep it coming! Diagnostics are fun!
AWESOME. yall do so much good for owner ops. hopefully ill be able to bring my truck in when i get it.
Best video so far.
Awesome job guys! 👍🏿👍🏿
Thank you!!!
Very impressive hp and torque.
Now thats a fun day at work .Nice
Enjoy this site, always well presented.
Hi , thats interesting , I always have run Cummins but the one thing I always insisted on was shit trap tanks welded on the bottom of the tanks usually at the front being the lowest . ide drain those once a year youd be amazed how much crap came out black water an dirt . didnt change the filter very much only when i felt her tugging a bit then find a slope swap over to new filter and ring dry back in the cab get her rolling drop the clutch and away 2-3 seconds she fired up no problems . never had pump or injector problems . yea its a must ! ...
That Torque is MASSIVE!
I've pulled Donner Summit with 600 horse loaded and had a cattle truck that i know was loaded to just suck me up and leave me trying to act like i missed a shift when we all know he had some Pittsburg goodies that i didn't
I guarantee that truck has no pittsburgh goodies on it it's probably got that robbie spencer go fast kit in it
Great truck hopefully mine will run like that when I'm done
I miss my cats. This Cummins would,, will never run like that. This one is suppose to be a 600 the Cummins shop was satisfied with 480 to the ground. Again am envious. You go guys
That should be about 550 at the fly right? Apparently not a kta, AKA kitty killer
DO NOT underestimate the ISX with common rail injection. There is over 800 wheel hp available with just tuning and turbo swap. With the after treatment "fixed",that engine is a beast
Get a ktta Cummins those produce 2000+HP.
@@dougkratz5269 ....absolutly correct. Pittsburgh Power has the know how to make them produce. Took a lackluster 600 DEF ISX Cummins to them...now pulls 126,000# gross like its running empty. Very happy customer.
@@heyinway
nowadays, the dealer won't take a "fixed" or deleted truck into their shop, or on trade
I can see this is for pulling that load, when you need to pass that Porsche.
and those telsa's in plaid mode.
Must be fun to drive!👍
Drove a C15 with C18 components once and I was so pleased with the power to the ground fully loaded and had to slow down following empty tractor trucks in the hills and mountains
Now thats a big strong Cat 6NZ!!
Thats pretty incredible.Nice work guys
2:00
What is the part number for that sight glass ??
Can they be left in line for regular confirmation of good air less flow.?
David Drescher it’s a refrigeration part to fill up units with refrigerant. You can pick one up at any refrigeration store and add the adapter at the ends to suit you’re purpose. You can only put it before the high pressure pump. They don’t make any to withstand 3k-50k pounds. I think they only go up to 400psi.
David Drescher apex tool.
@@jorgenunez1825
There's no place to in these cat fuel systems that's over 100 psi besides INSIDE the unit injector, the injectors is the "high pressure pump". The pump on the front of the engine is just to suck fuel out of the tanks and pressurized it to 80-100 psi in the fuel rail to the head.
Those engines are really amazing, & I build race engines! You could make a BBC make 3000ftlb, & 3600hp with out much problem! Except you will never actually pull the extreme weights those trucks do! Never mind you could never keep all that torque for so long! It’s really crazy people try to pull 20 ton with a pickup 🛻 today 🙄🙄🙄🙄! Most have no idea how big the cranks, rods, pistons, transmission & gears ⚙️ & cooling systems are on those trucks! Never mind the chassis & brakes! They are made to pull mountains ⛰ @ WOT for long periods of time! A pickup might have similar horsepower compared to low power tractors, but they don’t have the huge torque & parts! Also I love that you could make that big power, without blacking out the sky 🙄🙄🙄🙄!
Awesome video. Well done!
Great way to troubleshoot!
I’d like to see what kind of fuel economy he is getting pulling 80,000 on the Interstate. I expect he is seeing some good numbers if he drives it in the sweet spot.
My 700hp 6nz made 9 empty and 5.5 at 120k heavy hauling. Our stock trucks couldn't come close to that. It's all in how fast can you get it up to speed and easily maintain it. The amount of time I spent at wot was always way less just simply because I had the hp.
@Donald Clark
Cruising down the interstate at a set speed, you're not using full output at either the 550 HP this engine came with or the 1000 it's making now. The better flowing components that allow you to make 1000 HP increase the efficiency at partial loads too
Donald Clark wrong mate! Efficiency is how you get better fuel mileage.... average throttle percent is king for mpg. Now you put your foot in it and yes a 800hp anything will eat the fuel fast💦
Awesome truck
On a good day I can get almost two hundred horsepower out of my 54 Mack
Dat iz powa!
But damn driving a 54 Mack in 2020. Something I would like to try out... Ffs I live in Europe...
Would love to see a video! Sounds badass
But yet that 1954 Mack Has probably hauled more loads than any of the other new Junk Trucks out there
My friend’s 2 peterbilts are broken down constantly. Today, the 6nz needs a new head and turbo and radiator. 11k. Less than 100k on rebuild. Never ran hot. No racing or hard driving. Pittsburgh box on level 1. PDI exhaust and turbo. Turbo cracked. Head cracked. Machine shop said too much fuel. The other truck, a c15 accert, constant issues. PDI cam, platinum cat rebuild, pDI computer and Pittsburgh computer. Blew head gasket or worse. Just now realized factory 18.1 piston may be issue. Needs 16.1. Gonna go back to all stock on all trucks. Gonna rerate both to cat 625hp tune. Possibly switchblade turbos. Mega money game. Yikes
I couldn't behave in that truck
Lol
Who could
So what was done to fix the problem? A new fuel pump?
I sure hope this poor fella didn’t have to pay per run on that dyno machine so y’ll could see how much horsepower it was getting
Stephen carr yes it's a high hp core with dimples on the tubes guaranteed to cool 1000+ hp
My only question is ...What about longevity of drive train and engine after a Tweek like this.
Kitty cats are the "King of the hill!" C'mon..
What do y'all charge to put on a dyno and see why my truck acts like it's starving for fuel at 1700 rpms? Fuel pressure stats around 95 on my gauge but the boost gauge starts to fall.
Good gosh almighty , that torque makes my sticker peck up ! She hung in that range for a good while too ! Bruce you still are tops in my book ! Not trying to nit pick but you never addressed the issue of the source of the air , just a band-aid on a scab is not my style ! Boo lol .
swampratt36 the issue with air in the fuel ended up being the primary air filter housing was cracked and the customer opted to take the truck as is and was going to address the air in fuel system himself, as far as getting more fuel pressure and/or volume he had his own plans to improve it, it had stock fuel lines and fuel pump and it seemed those marine injectors demand more fuel volume/pressure than what a stock 6nz comes with
@@chur029 Good to know. Im a fan of the Airdog system personally , but to each their own right ! Thanks 👍
@@chur029 I was going to say bet it had crack fuel housing. I've dealt with them alot on my rigs...
I watch Jpaydirt's RUclips channel, and he loves Pittsburg Power. J runs nuttn' but Cats.
Very good video
I have been driving a 2006 Peterbilt with a C 15 it has twin turbos. Me and the boss ain't seeing eye to eye I think we can get more horsepower out of single turbo but he doesn't think so. What do you think?
Faster spool on twins and if compound way more boost but it would take a big single for more power i suggest compound i run a compound c16 at 880 fly and it hits hard and quick
Drove a C15 stuffed with C18 components and a single turbo, very strong and only have to slow down in hilly and mountainous terrains surprise to let empty trucks stay in front of me
Phew...nice numbers👌
1,000HP End Dump, fastest delivery service in town
I was talking my cousin in Europe. He says the Volvo D16 has 750HP with 2560 torque and with that horsepower/torque engine not available with manual transmission because it will destroy the clutch. What is the torque on that 1000 HP engine?
Pretty close to the same numbers on torque
what the difference between marine and automotive camshaft? can't find answer on google thanks
That's funny I talked to you guys about my 6nz running hot when pulling I was told its because I have a marine cam and injectors in it theres nothing I could do to stop it but this truck is set up pretty much the same parts as mine it didn't seem to run hot
Have you changed your radiator yet? They make high hp rads bigger and better core flow.
When they are turned up they will run hot !!
Where do u get that see thru fuel line.please let me know
Curious as to what you replaced??? so as to check and maybe eliminate future problems
It was filter housing cracked. Owner took it home to fix it and address the pressure issue
I would think any air in the fuel line would be unacceptable. Maybe a little on low fuel because of that sudsy diesel fuel otherwise a fitting or gasket isn't sealing allowing air to be drawn in. Possibly pickup screen blocked with debris in tank causing higher vacuum which would cause normally sealed fittings and seals to allow air in. That's why I prefer AN fittings over pipe fittings, although pipe fittings are somewhat self locking if tighten well.
a bubble now and then ,never like that.
HI GUYS do you offer any tunes for the 6nz or 3406? What's needed to run 600 to 700HP on these 2 motors?
What software do you use for custom tuning?
How much fuel does this monster suck up fully loaded uphill? Maybe 2mpg?
Stock 400 cat is good enough, crossed Missouri with a load of shingles prolly 50k on spread axle flat. Never downshifted.
Was the fuel pump able to supply enough pressure for the marine components?
so what was causing the air in the system ?
I wonder if it needs bigger air intake cans and intake ducts
So it had air in the fuel line at first?
Fuel primer on the filter head is suckin air. Block it off and get rid of the primer
I got rid of the cat fuel filter base for that same reason and better flow.
Is it getting all that power with stock engine parts ??
Nothin like a big block Cat!
best way to shorten the life of a hugely expensive motor.
What kind of clutch do these guys run with engines like these all hopped up?
terryeffinp lipe would be my choice with stiffer clutch springs
Every diesel especially a built diesel needs a fass or a air dog system.
They're great til they go out and you're left stranded. Best to have one on standby
If you listen to the video , they only gained 15 hp after adding the fass system not much bang for you buck$$$%?????.
Do you think stock pistons in a C15 will hold up to 59 injectors?
Yes, but they smoke like crazy. There are better ways
Anyone think to change the bypass valve in the filter head to correct the pressure loss, maybe the marine engine has a higher bypass pressure and the standard 6nz wouldnt hold up
I LOVE THE SMELL OF DIESEL FUEL.
I'd love this done on my vac truck haha
That's a nice kitty
So was the fuel pressure regulator replaced to correct the fuel pressure issue?
I'm just curious for knowledge purposes.... Is there anything that can be done for more power north of 550 hp on an ACERT C-15 from 2004-2005 without tearing the entire motor down to the block?
Yes it called 625 king of the hill kit
You can make 750hp easily from a bxs acert, its basically a 6nz once u remove the IVA (intake valve actuator) system which is bolted on to the rockers, delete the IVA’s, low compression 16:1 pistons, stage 1 head (you can get them ported and fire ringed) cat c15 arp head studs, anti friction coated rod and main bearings, also get your piston heads coated while youre at it, big single turbo or keep your compounds, fass or air dog lift pump (i dont remember the size of GPH needed but just contact air dog or fass and they should guide you to the right direction, and finally 800hp marine cam and the biggest injectors possible i don’t remember their full part number or size but the cat guys call them “89” injectors lol hopefully with some asking around they can give u the part number for those, but with all that you can safely and reliably push 750-900whp
If you want 1000-1500hp than dual lift pumps, stage 3+ custom head, upgraded cat fuel pump, custom injectors, dual bigger upgraded turbos, arp studs on everything possible main caps rod caps head studs, steedspeed one piece manifold and upgraded valve springs, retainers and all that not so fun stuff, most guys run c18 liners pistons and rods to push that power but idk if its necessary (it probably is)
0955 injectors are the onces i meant not “89” and actually you can use stock 57 or 58 injectors to push 750hp
Might be a stupid question, but just curious what kind of MPG's that beast gets.
Keep your foot from getting carried away and same mpg as all others
I never knew trucks had over 2000tq, I am surprised.
For a while now
Given the HP on that truck; what kind of fuel economy does it get pulling loads. There has to be a trade of at that HP.
Id bet almost the same or better when cruising, not accelerating or pulling a hill
That would be so awesome to pull 250K with on a 7 percent grade for 3 miles!! I'd never let my foot off of the pedal either!
You'd have a hole in your block too
@@Alex0992 My point exactly!
Man that thing pulls
so what changes did y'all make to this truck to correct the fueling issue after it leaves yall's shop??
the issue with air in the fuel ended up being the primary air filter housing was cracked and the customer opted to take the truck as is and was going to address the air in fuel system himself, as far as getting more fuel pressure and/or volume he had his own plans to improve it, it had stock fuel lines and fuel pump and it seemed those marine injectors demand more fuel volume/pressure than what a stock 6nz comes with
@@pittsburghpowerinc.5948 👍 thanks for the response.
@@pittsburghpowerinc.5948 Surely you meant primary fuel filter housing. I don't see how an air filter would effect the fuel system???
How many gallons per mile?
2500ft/lbs at 2k rpm mmmmm mmmm that's real power
You mean 1k rpm!
anyone got any tips on making a 3406C get some more power besides turning the pump screws all the way out
Check out Riehl truck repair in landisville PA. Dennis is a mastermind with me mechanical cat pumps. There much more to it than turning the screws IF you want the engine to last and be reliable. Also will want nozzles and a better turbo. Call Dennis, he'll shoot you straight and make it run(and fun!)
CentralValleyhho.com
@@scottsmith6960 thanks!
What injectors number are they running?
Ya that fast system works
awesome
798hp
Makes me wonder what my 7cz. C16 would make hp with a marine cam and Injectors I already have a full tilt manifold and Borg Warner turbo and fleet air filter may the fass is next
Awww yeah fella! Thats that "Silver Back Gorilla" right there! I'm gonna get me one of those hopefully while i can still pass the eye chart test at the DOT physical...lol🤤
1300+
C15 is stronger than a c16. You’ll make good power but the block isn’t as reliable
@@billygoose2156 its the same Block
WOW!
I'd love to see what can be done with a 60 Series & a Signature 600...🤔🤔🤔
I would be happy with 650hp
I usually don't sip Yellow Kool-Aid, I prefer the Red one . . . HOWEVER . . . this thing is a beast. 😲👌🤘
Too bad they threw the towel and got out of the on-road game.😞
JIGA BACHI they saw the future and didnt want to play with the EPA no more
Red ones are junk
@@coffeecan7440 no body escapes the NAZY EPA POLICE, eventually they'll clamp down on heavy equipment too.
@@GIGABACHI they already do. I’m in that industry and we are plagued by tier 4 requirements
Were can I purchase the site glass for the fuel
Corey apex tool
That's one bad 🐈
What’s the MPG of that Thing ?
2
At this point I would think it's not mpg it's GPM lol
What cured or lessened the air in the fuel?
He said they
added a Fass fuel system the fass system takes the air out of the fuel so I guess that's the problem .
FASS takes the air out but the real issue to solve would be a leaking fitting, cracked draw straw in the tank, or a leaking braded fuel line.
@@thinairdiesel3158 that's exactly right. I like the fass system and everything it does, but a lot of times people want to put a band aid on a still bleeding wound.
And they didn't entirely solve the fuel pressure drop either, aside from the air in the line from the gauge they were using, pressure going into the head was low at high rpm and the way the fuel pressure regulator is set up, technically you should see less tha n 5 psi drop going into and returning from the head. Should have gotten new orings on the injectors and a new valve in the regulator with the updated spring.
The issue with air in the fuel ended up being the primary air filter housing was cracked and the customer opted to take the truck as is and was going to address the air in fuel system himself, as far as getting more fuel pressure and/or volume he had his own plans to improve it, it had stock fuel lines and fuel pump and it seemed those marine injectors demand more fuel volume/pressure than what a stock 6nz comes with
I wanna know what difs and trans he hase
Air in fuel = less hp and torn up injectors
Monster
This is cool but I always thought the big rig game was all about efficiency and longevity. Maybe this is a weekend hotrod?
Or when you really hate your tires.
Or maybe he knows how to control his pedal and use the power properly and in return is causing less where than those running 475hp
that truck AIN'T a weekend hotrod , it's too dirty and not painted fancy ,, i don't know many guys with weekend hotrod trucks that are hooked on a trailer and DIRTY
it's a daily driver ,,i've got one myself , and while i don't drive it every day it's still a hotrod and is NOT quiet like that kitty cat ,but i can jump in it and go anytime just gotta start the APU first cause my 12V92 Detroit doesn't have
glo plugs ,,if it's below 28F give it up cause it won't start without some heat,, APU run 10 minutes turn the key and it'll start like it's summer