I know nothing about a race cars fuel system but this dude sounds like he knows a ton about it and his explanation of what he thinks is your problem seems to be spot on!

Harry is an awesome guy. I spoke with him on the phone 15 plus years ago in great length about several different subjects. He used to be the warranty rep on turbos for Caterpillar before he went out on his own.

Bubba was a good boy. His lil foundation would be super proud of the donations. He was Doug's best friend, he lost another one right after Bubba passed.

I love that he has Call of Duty League on his phone in the background, after this weekends event, while fixing up your turbo

Harry's explanation about the injector feed was amazing!

This is why you find the best in the business to win. These people are very smart and have built/raced/broken/fixed, rinse and repeat.

That's a man who understands fluid dynamics far beyond my comprehension. I have no doubt that man could build you an incredible injector setup, that will give you a 5-second average

I love all the info given. Thank you Tom and crew!

Harrys explanation about air being slowed down (less power) when it is carrying suspended fuel explains one of the benefits of direct injection. His suggestions about pressurizing the fuel rails was also golden. Smart dude!

I received my Sick The Mag flannel today and it is very, very nice, folks! Thank you

the ice cream truck passed me in Knoxville today on a trailer

Great info. Thank you Tom and Harry!!!

Great update ; and really good injector / fuel rail tips that make sense. Many thanks.

just got the latest issue of sick the mag this morning! cant wait to watch all yall on sick week!

His explanation of fluid dynamics took me back to my Mechanical Engineering college days. Loved it!

Wow so much effort to get things sorted! Awesome! Looking forward to the injector/fuel flow tech coming up 👌🏻

The fuel rail layout information was fantastic. Thank you!!!

Lot of great info on this video! Thanks for sharing!

Very educational on the fuel system tech

Interesting stuff! Thanks 😎

Thats some secret Squirrel excellent info Tom thank you.

Dang good info from Harry on the fuel injector rails!

I hope Steve Morris sees this video and puts that injector plumbing method on the BoostMaster. 😂 Free horsepower to beat Sick 2.0.

Wow! Very good video!

Good stuff!!

Oh man, I want to see the conversation and testing Harry did! Awesome information about large fuel systems.

I am quite surprised no one has pointed this out previously. Twin feed rails bacame popular within the JDM scene 10+ years ago for this exact reason. Sounds like you have found another piece of the reliability and consistency puzzle. Great vid.

Some people might think this is boring but not me!! I really love this behind the scenes information even though it’s not something I can do but very entertaining ❤

Tom, that tech queue jump 4 charity deal is truely excellent. Well done Sir, good thinking 🙏

Sick Week is coming quick. Make sure to get the Texas guys that are doing the filming some hell they deserve it.

I work with water 💧 pumps for 18 years, his fuel system is 100% the way to go, 2 fuel feeds for each fuel rail

Incredible info, did you catch the size of the intake ports on the hemi intake? "I made an extra 600 H.P. by feeding fewer injectors with each feed", 2-feed lines! Why not a holding tank for each feed? Like a big one! Wow, WOW!THAT WAS COOL HARRY ! 👍. Thanks for sharing 👍🏻. TOM & HARRY ! ✌🏻🤘🌬 🇨🇦.

Very informative, should definitely bring him back on again.

Feed both top and bottom rails and put a return of a smaller Y out the back of both rails. This should give you some small amount of back flow from the lower rail if the upper is being pulled dry. Providing your feed in the the shut off lower rail is larger then the return line. 2x -10 feed 2x rail 1x -10 Y then smaller -8 return.

Craig Railsback of BDS fame taught me those fuel rail Basics 23+ years ago when I was only using 8 injectors total and 6/700 hp 6200 rpm..... each rail got a # 10 feed and a #8 return to the regulator and that was only 45/55 PSI rail pressure. There's also the mechanical/hydraulic effect in the rail.... as those injectors slam off the abrupt stop of the fluid creates turbulence {backward pulse/wave} in the rail that pushes fuel away from other injectors... Large ID rails and hose, regulator at exit, help absorb/dissipate that turbulence ......that's just the basic idea, to much info to finger poke......

What I learned was that the smartest guy in the room had to dummy it down for the rest of us in the room. Good news is that we got it.

Harry's right Tom about everything he said and I'm surprised you haven't had more problems then you've had running the fuel rails that way.

I never thought about how fuel slows down air until that injector guy mentioned it. I learned something today

Sounds like Steve should be having a session with these guys “ sound pretty switched on with fluid dynamics

That was very interesting 😮awesome video good luck with the racing 👍Aloha from HawIi🤙🏽😎🌴

Something to know about raising fuel pressure. Once you reach a certain point, 2 X the pressure does not = 2 X the flow. This is due to choked flow caused by increased velocity of the fluid creates turbulence. Think about your pneumatic screen door closer , let it close by it's self and you get X speed , push it and it will go faster, push it with 2 X the force and it does not move 2 X the speed.

fuel return at the top of middle rail to drive as much air out? maybe between the second to last injecector?

Yes. Your turbo should look like this. After you pull it out of scrap bin

Im beyond estastic with Sick The Mag. 10/10 highly recommend, even just to flip through the pictures. One of the highest quality magazines Really great job.

The fuel rail starving #8 injector causing it to lean out the cylinder makes sense. I would like to see an internal pressure map of the fuel moving in that rail while under load and high demand and how the other three injectors pulsing in that bank disrupt flow before reaching #8.

On the fuel rails, should the return line fittings be on top of the rails to help in getting rid of any air captured in the rails?

Many are saying return out the top center of each rail to expell air, I agree to send the return down to lower injector set. But you could do a dead head balance tube maybe AN-4 up from each rail to a single capped valve stem up and forward that would trap as much air as possible in the balance tube, and remove the cap put a cup over the end and press the stem valve center pump on and bleed out any trapped air between runs. It would not bleed off all the air, but if you put a return pressure regulator (just like a single injector TBI system IE: a 1980's Era 2.2L Bosch unit on the return line back to cell or tank, and adjust the system pressure on return rather than incoming side, as soon as you turn on the pump prime it blows all air present in the system back to tank or cell and empties the air to cell and return line only before any injectors even open leaving incoming charge all fuel. Start with a 10 sec. Pump prime, and work from there looking at time required to remove all air bubbles from the return flow back at the cell. Removal of the air in the system always reduces cavitation throughout the pressured system. Filters on the system should either be mounted angled in direction of flow (low inlet, high outlet, or level horizontally).

Hey shouldn't the return be in the top of the rail to vent air? I could be totally wrong but it seems like the rail would remove air easier in that configuration.

if u center feed the rails it will be a more even flow for the injectors. center feed is always better no matter what kind of plumbing

That railfuel discussion is great. Manufacturers can do that because of the low power output of their engines.

Tom, I'd love to watch that 2hr discussion you mentioned with Harry.

Wilson manifolds is right there in Florida..

See you in Orlando

Should be a game changer.

Turbo looked fine to me brother, send it.

How's the Nomad wagon you and Dennis Taylor's working on

Could you (temporarily) take your existing fuel rails and run them in parallel on each side instead of in series? On his engine he does this with dual feed front and back with single return out the middle, what I am suggesting is split the feed to both rails on one end and combine the returns out the other end, this may stop the air bubble issues he mentions for injector 8 improving fuel pressure all around.

What is EJ's back story? Where did she come from?

Yes it should look like that when you are sloppy with checking up things....

hey Tom I would like to hear what you think of the 7.3

Fire the mechanic!!!

Where can the injector buckets be sourced?

But but but all the comment section mechanics said it was definitely something else 😆😆😆 weird lol

Just got my sick the mag opened it like I was charlie looking for the golden ticket but sadly it's not there

how about a Bob update?

Does the purchase of the engine include the fuel system? Does Steve have the fuel delivery sorted on his car?

Bailey will be able to ride the top end of the track with these injectors! 😆🤣

The air fuel section was interesting

Harry was good👍

Is the blower Durango going to be at sick week

kinda dope seeing him stream cod league in the backround ngl Lol!

Hiya Tom, what happened to the nomad that you started to build please ✌️👍🇬🇧

Really love your merchandise, live in Australia so freight is ridiculously over the top for clothing. Can any alternative methods be offered?

What happened to the Durango?

my Guy rebuilding turbos and watching the CDL

Take it up to ksr and have him add a rail on each side

👍

Not being a specialist in any way but it seems to me that if you have air bubbles in your fuel rail the return line should be out of the top, not underneath.

Thats amazing usually thr not willing to give all that knowledge

tom why not loop the feed so that you have COMPLETELY equal pressure to every injector? so instead of having 5 holes disregarding the feed lines.. have 9. so instead of going (Feed and Return) F>4>3-R F>1>2>R have it loop between them too. so a loop AROUND the first injector at each end... F>L>1>L>2>R and from the other end F>L>4>L>3>R the holes marked L for loop are connected. you could even have a T off of the middle of each loop to balance it further. or does all this cause more cavitation cause you are introducing a bunch of fittings? you could try both and tune separately on each of them to see if there are any differences. those T off each loop could also link over to the other rail..... making everything statically balanced in terms of pressure maybe not for flow?. please let me know if you think this would work. @stevemorrisracing flow over pressure any day of the week. bigger is better. IM MORE EQUAL THAN YOU. BUILD MY ENGINE FOR THE 2 CYLINDER BIKE WORLD RECORD within a few years (torque moment over peak HP any second of the day cause HP is a function of torque increase over time divided by work)

Does HPL have a site or facebook?

Fuel injector guys are seriously on their own type of tech. Even major motor guys can’t understand what they are thinking. Some injector guys are descendants of Einstein……

Most of us would prefer that our turbo never looks like that.

Building turbos to bob segar …. Do u have a application I can have

What's the word on Bob I haven't seen or heard anything if he's out of the hospital and doing fine now

Air bubbles? How? On the bench yes, injectors will stop running because he doesn't have enough pump. But on Tom's car he does have enough pump.

4 of a kind beats a pair all day long

Could you not just restrict the return line. Should increase pressure and allows more fuel to be used before exiting. As a temporary fix of course.

Tom please don’t associate Hebron Indiana to Chicago!

How about a Bobby update?

❤kool.

Dude knows his shit. I figured you was having this issue speaking the common rail diesel guys have back cylinder and far away cylinder issues all the time.. I cannot believe Steve with all his knowledge didn’t find this or knew about it the whole time... This is a duh scenario man.

So he's saying a bigger injector at a lower fuel pressure is better than a smaller injector at a higher fuel pressure?

thumbed

Is EJ your kid?

Is EJ toms daughter? Who is EJ?

Cavitation is bad mkay.

Tech line jump via donation to good cause, heck, why not use an opportunity to do something good for those who need some help.

Your videos jump all over the place, they’re a little hard to follow. The injector and fuel rail discussion is great, but then you’re on the beach again? It doesn’t flow.

How old is Aidan and EJ?