This Might Be Why It Smokes...Behind The Scenes at Precision Turbo

[@warrenmichael918]

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!

[@HEADDYNAMICS]

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.

[@crispycris]

Any site or Facebook for him?

[@ElizaJane85]

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.

[@Distant_Place]

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

[@RHBTurbochargers]

Relatable

[@hcvrr]

Harry's explanation about the injector feed was amazing!

[@jjansen987]

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

[@schwags1969]

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.

[@staggerinstanton56]

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

[@danisyx5804]

i was hoping he was going to elaborate

[@stephenlea5765]

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

[@vehdynam]

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

[@baby-sharkgto4902]

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

[@danmyers9372]

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!

[@ls1jeeper]

Very educational on the fuel system tech

[@neversettle7666]

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.

[@BuildTuneRace]

Dang good info from Harry on the fuel injector rails!

[@whyamihereg]

Great info. Thank you Tom and Harry!!!

[@michaelloth5870]

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

[@crispycris]

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

[@benmccrady2152]

Thats some secret Squirrel excellent info Tom thank you.

[@s56505]

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.

[@wobblysauce]

Many ways to do it.

[@AndrewH9999]

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

[@jamesstarling7273]

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 ❤

[@stuartjohnston7364]

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

[@sithyarael6807]

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

[@bobroberts2371]

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.

[@terrybaltimore1542]

Very informative, should definitely bring him back on again.

[@h.h.legacydiesel6724]

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 ! ✌🏻🤘🌬 🇨🇦.

[@garylucier6817]

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).

[@MM-vl8ic]

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......

[@xXSlickNickXx757]

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

[@RustyWells2]

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.

[@davidbrown6193]

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

[@mdavidson101]

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.

[@1dave301]

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?

[@disolejunk]

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

[@MrJneesy]

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

[@iknklst]

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.

[@craigmooney2630]

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

[@29alpinestar]

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

[@bigbulldragon]

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.

[@guy_autordie]

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

[@conradlowenstein9210]

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

[@charleshenshaw9099]

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.

[@michaellafleur2077]

So true Lol!!

[@terrydunnett]

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

[@Deuce1550]

I second that motion. Several times I've browsed the shop but freight to New Zealand is ridiculous.

[@snocrushr]

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

[@leftyo9589]

once upon a time her mom and dad had 30 seconds of hot jungle luv...

[@jaredandrews379]

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

[@ajj2926]

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.

[@richardkersey8993]

Interesting stuff! Thanks 😎

[@pete540Z]

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

[@germancarluv]

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

[@bydancar]

Harry was good👍

[@billkidd5020]

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

[@johndoran3274]

Turbo looked fine to me brother, send it.

[@dingmanracing]

Wilson manifolds is right there in Florida..

[@josephpuou96]

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

[@KensKorner]

Wow! Very good video!

[@zackdash3517]

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

[@leelynch9901]

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

[@allenl9031]

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

[@chrislaunders8283]

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.

[@BuggDude53]

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

[@jeffhopper3526]

Good stuff!!

[@TitusPerformance]

Where can the injector buckets be sourced?

[@Patricks_Projects]

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

[@jdbauer9183]

See you in Orlando

[@bryandunbar5871]

The air fuel section was interesting

[@iannorton4463]

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

[@rmcnasty7319]

Should be a game changer.

[@zrxdoug]

how about a Bob update?

[@MartinbrothersOutdoorServices]

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

[@barrelsurfergirl4614]

Is the blower Durango going to be at sick week

[@sethcavanaugh5743]

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

[@zrxdoug]

Kevin is up to his arse in Soccer Mom, and he just lost Drew..bad call.

[@BCzepa]

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)

[@JayMac]

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

[@joevaagen6170]

AIN'T THAT THE FREAKING TRUTH.

[@EGHeartattack]

What happened to the Durango?

[@jwjr2197]

Fire the mechanic!!!

[@imgizmo4706]

my Guy rebuilding turbos and watching the CDL

[@crispycris]

Does HPL have a site or facebook?

[@joen5332]

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

[@yeahok115sure]

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……

[@vernshahan2913]

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

[@cjbowman4750]

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

[@shortymack340]

Thats amazing usually thr not willing to give all that knowledge

[@rdg_-rj8zg]

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.

[@iancameron415]

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.

[@jsmcortina]

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.

[@randalltufts3321]

4 of a kind beats a pair all day long

[@bad6as]

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

[@mdtransmissionspecialties]

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.

[@onehot57]

Tom please don’t associate Hebron Indiana to Chicago!

[@The50Baker]

Is EJ your kid?

[@jmyd83]

👍

[@baggd65]

Is EJ toms daughter? Who is EJ?

[@billmadison2032]

How old is Aidan and EJ?

[@alexarkin227]

Are they brother sister and Tom’s kids? Sorry new here.

[@billmadison2032]

@@alexarkin227 yes

[@PiDsPagePrototypes]

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

[@Bradley_Clark]

thumbed

[@HappyHarryHardon]

Cavitation is bad mkay.

[@overyonderjustapiece]

And for our next trick, watch as we destroy a $100k engine because of sitting around with our thumbs up our asses instead of getting shit ready to go a month ahead of time and finding problems that could then be properly addressed.

[@zrxdoug]

Kinda seems to be the norm with all the heavy hitters lately...I can't believe the number of entrants amongst the little guys who are still looking at incomplete cars a week and a half before the event.

[@jsmcortina]

@@zrxdoug Where's the fun in being ready ?!

[@zrxdoug]

@@jsmcortina Comes with the winning & lack of ulcers that preparedness provides... 😁

[@tylerangelos3603]

1st

[@balljointfd3s]

Megh, I hate Precision Turbo. They won't sell individual parts for their Turbo's, aka you can't rebuild them on your own or with a competent Turbo Shop. You just need a new bearing for Turbo? F U ship it back to Precision. You need a new seal for your Turbo? F U ship it back to Precision. Meanwhile Garret or Borg Warner, they don't care and will ship you whatever part. I get that Precision makes good Turbos but why you Drag and Drive guys like them is beyond me.