The black sheep part 3
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- čas přidán 27. 03. 2024
- We are just about done with the black sheep.
watch the whole video there is some good tech info in this one.
If you're a john doc hater, dip into those comments and let that hate out. - Auta a dopravní prostředky
Devins talking like Doc is 100% paid up front 😮😅😅
😂😂😂😂
Rough on Forrest also!!!!😂😂😂
Always haha
The way the rules keep changing, this will be a mildly competitive Ultra Street car by the end of the season.
who needs enemies when you have friends like devin... lol
Yeah he's far worse than any of your enemies could possibly be 🤔
Devin would you wire up my dirt car??!!!!🤣🤣🤣🤣
Gold catch on the fuel system. To try to eliminate confusion for those learning this, 3 in/hg = -1.5 psi. 90 psi -1.5 = 88.5 psi at idle.
There is a nut missing on one of the studs holding down the blower. You can see it at 4:00 it is the front corner one.
Good eye!
Nice upgrades. Looking forward to seeing some action from The Black Sheep...And The Nasty Doc
Needs a split fuel pump and 2 separate regulators. Boost reference the lower set of injectors and leave the hat injectors constant psi.
Dirt ball Doc coming to a roundie round track soon ? 😂 omg so funny ❤😂
I have done quite a few of this setup In burnout cars we just setup the hat injection to run on a 2nd map in the software and tune that separately to the port injection. We have mane injection for fueling with hat injection and we use the port injection to even out the cylinders
Awesome job man...I love watching how you lay everything out all clean like you almost care about John's car when it's done, hopefully he won't have it tore up the 1st day
The amount of knowledge you share is amazing and your channel deserves all the followers. Thanks again Devin.
Devin delivers the Doc heat again. Well done.
Dam all that’s nice but the light is really nice
No we love the BlackSheep John on the other hand we just put up with him lmfao!jk
Always so detailed 👍👍
GREAT Work as always Devin!!!
Is a dual regulator setup so the top stays constant just to much weight? Or is modify the top injectors load % progressivley fairly easy and straightforward?
This was my question also.
You would need to have two pumps at this point as well, if I'm not mistaken.
Otherwise the fuel will go the path of least resistance and flow across the 90psi regulator for the top injectors.
Regulators are in the return line so you can't have two different pressures between one pump and two regulators.
@MartinBorn I wasn't sure if you'd be able to run the second reg in line after the first reg. So the first reg feeds the lower injectors then off first regs return you run a second reg to keep constant px to the hat injectors then return excess to the tank. Would have to study it more but that was my initial thought. Running the regs in parallel wouldn't work like you mentioned. They'd need to be in series.
@@dropfactory running it of the return of the first regulator would not work but running it of the output could.
I think possibly if you put the higher pressure reg first then plumb the return from the that reg to the top fuel rail with a low pressure reg at the end of the system back to tank. Other wise I'm thinking dual pumps and regs
Since it’s a BA injector, it’ll go from something below 700 to sqrt(140/90) * something below 700.
Nice job as always. !!👍
It goes from 700pph to 873pph from a 90psi delta to a 140psi delta
What is the issue with putting more fuel in pre blower? I thought a lot of mechanical injected setups put most of the fuel in pre blower and the bottom nozzles were used for cylinder to cylinder tuning.
Great video guna be cool when dune have a great weekend bud
You need someone to make a closed loop capable fuel pressure regulator that is electronically controlled via 5v, 12v or PWM thru the ECU to perfect this mathematically speaking. Practically speaking, I would not be surprised if you’re “excess fuel” so to speak that you’re anticipating from the lack of
differential pressure in the hat isn’t consumed/evaporated/vaporized by the supercharger itself for means of cooling. Also, it’s fair to assume at some point during the pass the blower hat is sure to experience some amount of positive pressure due to aerodynamics. How much and at what MPH? I have no idea cause I’ve never logged a map sensor inside of a blower hat above the rotors but it’s fair to expect some value higher than the car sitting still. If it were mine and I was trying to be as techy as possible I’d probably begin by trying to model my fuel flow as closely to a true mechanical system as possible. I’m talking total fuel flow volume as well as biasing the top vs bottom injectors in the software as closely to the jet size difference top vs bottom found in a mechanical system. All that aside, I’m interested to see how you all decide to skin this cat and what kind of results you get.
I could be mistaken but I thought fuelab sold regulators with electronic flow control.
@@lukk4273I personally would have gone with a mechanical system similar to what the screw blower promods run with electronically controlled lean-outs. Blowers are hellaciously violent and can be hard on electronic devices like fuel injectors. I’m well aware people have done this successfully and it is without a doubt a more precise and controllable way to deliver fuel but billet hemi aren’t cheap to replace and Id be done for the year if something happened. I like what they’re doing and I’m sure it’ll work great once they’re finished but the longer time goes on, the more I find myself leaning towards simplicity and redundancy over intricacy and sophistication.
I believe they will flow zero above 10lbs of boost because they probably won't open with more than 100lbs delta.
The injector will grow to roughly 1000pph. In my opinion best way to reduce pre blower injectors would be to have a 2d offset table to reduce the injectors x percentage based on x fuel pressure
Im not real familiar with holley but id wager you should be able to compensate for the fuel pressure rise in the hat with some kind of custom table setup based of fuel pressure for those injectors. Cant wait to see how they deal with it.
To avoid from changing anything in the fueling between injectors, couldn't you just run another fuel regulator for the vacuum side of the inj's and have 2 main returns to tank, granted your going to have more fuel line but that's another option isn't it? So you can stay at the base PSI the inj's up top because you only see vacuum up there. Correct me if im wrong.
Just run a separate non rising regulator and return for the top side.
Since the regulator is a 1:1 boost reference couldn't you just use the inverse ratio on the upper set of injectors?
the black sheep in its natural habitat
Whole lot of testing coming up.
It appears to be 1088 pound per hour injector at 50psi
90psi base + 50psi = 140psi
140 / 90 = 1.555
1.555 X 700 = 1088LB/HR @ 50psi boost
At 50 psi you would need a fuel flow offset of .643 to make the top and bottom sets flow at 700lb/hr
That’s a calculation based on my previous math simply 700/1088
Manual regulator for the top hat injectors
The way I would have done it is run a Rage 2 stage pump with 2 regulators. But I'm just some random dumbass from downunder that can only dream of having a screw charged V8.
Aeromotive makes one also. That setup is optimal for sure. In my case, I don’t have space for the 2 stage pump.
Seriously, Doc and the Black Sheep us the 1st car I ever followed, then he introduced Turbo John and between there two channels, I have the best time. Plus Justin and 187. Hope to see more of Matt though. Hope all is well.
Matt has a youtube but dont think he has uploaded anything !!
Welp, most injector manufacturers lie about their flow rates… so the top injectors will flow at least 600 at idle. Not sure what injector pressure/flow looks like but interested to see the explanation.
couldn't you run a 2nd regulator for the upper injectors that is not boost referenced?
We could but he doesn’t want to and I feel like programming can handle it
@robholmes2129 Fueltech/Proline runs two small cam drive pumps with two regulators. Technically it's two separate fuel systems being controlled by one ECU.
on a hybrid system (efi and mfi) you use a dual stage pump as well
Dang they will be flowing about 873lb/hr.
Those sensors the same as lowdollar?
No sir
I kinda wish Jon Would edit his videos to no more than 15mins long and have less dialog. Or if there's talking, then show closeups of the work being done.
One would think around 1050 to 1100 pph
I'll give you $5 for that switch panel.
LOL
Actual injector flow = rated flow x square root of (actual fuel pressure ÷ rated fuel pressure)
So new injector flow is 873 minus some additional dead time from the added differential pressure
Oh No!!!! There's some paint missing from the roll cage at 18:10.
U ok Boss?
I always laugh when you have a car you cant show peoples egos are way to big! Its just a damn race car its not a secret air craft your rolling out to take over the world with!
😂😂😂
Close to 875 lbs an hour
1088.89 lb/hr @140 psi
This is what I mathed but I'm probably wrong. I don't know anything. I'm here to learn today!
873 PPH
Did John spend all his money paying you ? What’s up with the poverty panel ? Aluminum ? John couldn’t afford a sheet of carbon ?
At least he got a Leash board on it,better than he deserves😅
Great video but where is the cat claw
1085 pph
So, anyway!
Why does everybody hate him, I know that I hate him, I don’t know why
If he wasnt such an arrogant db....quit watching his garbage a few years ago.
I like John...he can be a bit of a cry baby but he just wants to win and is horribly disappointed when he doesn't it's definitely nice to see him get away from nitrous.
Couldn't agree more John is such a douche 😂
Lol 18:39
Why don't people like Doc? Is he a ballbag?