Compound Turbo System Explained | Pro Turbodiesel Drifter

[@turbodieselbuilds]

By clicking the link, you will get a 20% discount on the CarVertical report. - You can also use the code TDB for a 20% discount. www.carvertical.com/fi/landing/v3?a=TurboDieselBuilds&b=2f98e8ca&voucher=tdb

[@manuelolive53]

I truly appreciate ever single English video you guys have put out .

[@petetukiainen]

Lasse alkaa olemaan jo paljon rennompi enkun suhteen 🙌

[@sju1068]

It's always nice to hear proper rally English! 😁 Great setup and I really like how persistent you you have been with the diesel. Many would have been given up already and change to typical petrol and 2jz. I have been following your team almost all the years and seen struggle in the pass. Keep going! Btw. These technical insight are interesting so make more them!

[@artzi_ip]

Nice video !! Lasse's english is really getting better FAST ! keep up the good work 👍👍👌

[@lilbHEMI]

I'm glad to see you updating the electronics and whole level of development to new era. Keep up the good work guys! Car is amazing

[@sippo69]

Really good explanation on the setup and proper cinematic reels at the end there 🔥 can’t wait for the new engine!

[@PHUSII]

Very good progress on the turbo system! I'm sure you will get the temps down a lot with these new upgrades and Teemu can hold the throttle down ever longer! :D

[@grzegorzlajca5433]

Good job guys. And nice to watch You on the English. 💪💪💪💪❤

[@turbodieselbuilds]

Thank you! 😃

[@gafrers]

Great work and explanation. Love the Straightgates

[@turbodieselbuilds]

Much appreciated!

[@Mikikkailee]

Very nice system! I like big boy turbo❤

[@indreklensment8374]

Have You thought about using electrically driven wastegate? With air preassure there are some delays between it opening and doing it's work. With electric - more precise and immediate control. Karel Piiroja is implementing that to his 350z and dyno should be soon, will see the results before and after. Great video guys!

[@turbodieselbuilds]

We really thinked that, but leave using them because of needed water cooling for them. Am not sure if peaks are always bad thing. Interested to try that also some day.

[@jpnel4170]

Great vids the best on youtube. Thank you

[@Lelumi3s]

Nice setup guys ! Have you considered cooling the intake air between the stages and how do you intent to control the heat from the exhaust since there is also intake piping very close by ?

[@dirtymat8240]

I always wonder why dont every seriously highly tuned engine use compound charging. On gasoline engines too, I know this guy who has 2JZ with HX40 Super and HX60 on compound, running ~3bar of boost, absolutely insane setup and its a street car too. 😅

[@V8Lenny]

Compounds are laggy and make pumping losses.

[@AlbinSundblom]

I would love to see a comparison between a ball bearing turbo and a regular journal bearing tubo on a diesel engine, could you guys do that? :) Love your content! :)

[@tiagoabreu4107]

You can search Santjer Performance (tuner for M57 bmw), this guy uses triple turbo and it's 1000whp capable.

[@nesmio7378]

Very nice and cool video. Very interesting. Please make more. To Lasse - Why are you not running a bypass for the compressor of the big turbo to bypass the compressor of the small turbo so the air can go directly into the intercooler once the big turbo is ready and spooled? This is what the manufacturers do. This way the air isn't choked so much when the big turbo has to push and force the air through the small turbo and instead can bypass directly to intercooler, or is this because you need the compound pressure and it's difficult to make the high pressure you need from the big alone or do you need the response always from the small turbo so you have to keep it fully online and working always? Another question - have you thought about running an intercooler between the two turbos and stages? What do you think about this?

[@turbodieselbuilds]

Thanks! About first question, yes, we need have compound effect all the time, is not worth to make 4bar with one. And another things is to keep small turbo speed as you said. About intercooler between turbos, compressor difference is calculated to be not too big, so we can run without. If need go to bigger low pressure turbo, then intercooler is needed between those two. Thing is to be lighter and more simple. -Lasse

[@nesmio7378]

​@turbodieselbuilds Thanks Lasse, good answer. One follow up question - why do you only need intercooler between the stages if there is a bigger difference in turbo size between LP and HP? Is it because of HP working harder to compensate for lazier LP and you need maximum efficiency or because the HP turbo is choking the LP turbo too much so again you need all efficiency you can get? What is roughly the difference % you need for intercooling between stages to be worth it and what do you use to measure it and decide? Pressure ratio, flow, wheel size, back pressure to boost ratio?

[@lassekalliokoski8775]

Good questions. We are in calculated area, if turbo size different is bigger than this, then cooler is needed between those. But now small can handle all, nad heat is enough controlled. System must be simple and light. One simple way to fast calculate is compressor area difference 1,72. If difference is bigger, then intercooler is needed between.

[@IgorLapa]

Cool stuff! 😎

[@pajaman8614]

Maybe another intercooler between turbos?

[@Tahterimonni]

Pari kyssäriä 1.Onko teillä ollut harkinassa vnt hp ahmiten käyttö, sanotaan vaikka volvosta saisi hp puolen tuoton alkamaan vielä alempaa, eikö vaan siivikko yms liikkuvat kestä lämpökuormaa 2.Onko tuolla hukkisten pakopaine ohjauksella hyötyjä vs ahtopaine ohjaus jossa pikkuahtimen ohitusta ohjaa kokonaisahtopaine ja ison ahtimen ohitusta interstage ahtopaine

[@turbodieselbuilds]

Vnt on käyny vaihtoehtona paperilla, mutta se hyötysuhe alue ei kuitenkaan oo ihan halutulla alueella kun joudutaan pakottamaan liikaa kiinni. Lämpökuorma myös ongelma. On sillä joo. Ahtopaine ohjauksella ongelmaksi tulee pikkuahtimen hyötysuheen putoaminen ylärekisterissä, aiheuttaa valtavan lämpökuorman jos tehdään "väkisin ahtopainetta". Pakopuolen ohjauksella saadaan tämä ilmiö pidettyä kurissa.

[@chagge]

How that little turbo like big turbo generated intake air that is already 3bar? Does it speed up spinning of little turbo? Is there in little turbo some bypass mechanism or is it just normal turbo?

[@turbodieselbuilds]

Quite well. No, it does not speed it up, small turbo revs come down if we dont control exhaust flow also to small turbine. Thats why we need improve that from last season.

[@tobiasfransson3381]

Why are you guys not at elmia motorshow in Sweden and drive their påsksladden competition ?

[@turbodieselbuilds]

Because we are waiting new bodykit, livery for it and new gearbox from manufacturer

[@lamazver]

Sir i love your build, but you need to explain this differently. Turbos dont care about pressure, they care about pressure difference and density. Big turbo(LP turbo) is density multiplyer for small turbo. And if you want hp turbo flow as much as LP turbo you need to raise density. Both of those turbos have more than 3:1 pressure ratio in their compressor maps and you can run 9bar of boost pressure easily just as tractor pulling guys. As soonas your small turbo starts doing some boost, it will activate big turbo even sooner than big turbo would run alone. If holset compressor maps would be easily obtained you could size them turbos perfectly, that why I love borg warner and garrett for such builds.

[@Morokollikolossa]

How does pressure behaves on intake side between turbos? Isn't smaller produce backwards flow to bigger one during small revs and bigger to smaller during high revs?

[@RoisinT2]

🤔 Not quite sure what you mean? -big turbo sucks air outside -small turbo sucks air trough it at low rpm -big turbo pushes air trough small one to the engine on high rpm Imo there aint any backward flow. Air is going always trough both to the engine same way, no matter which turbo "works" more. Small turbo is there kinda just to get things going earlier and faster. Though it provides the boost also - meaning if another turbo gets already boosted air in and pressure it more, more boost.

[@DhgxgxhxbxbdhxhNcbcbcbxhxg]

круто ребята! с удовольствием вас смотрю. надеюсь вы все осилите! удачи в вашем увлечении.)) у меня тоже дизель w204 , хочется его сделать мощнее)

[@TunturiBreak95]

Ootteko ajatellut laittaa kennoa turbojen väliin jos sillä sais kokonaisuudessa imulämpöjä alas?

[@Mrracingms]

Do you do file service for an m57 drift bmw?

[@turbodieselbuilds]

Yes we do. Contact from our websites blacksmokeracing.com

[@carsandgaming991]

Ei liity mitenkään aiheeseen mutta voisiko joku kertoa mitä täytyy tehdä volvon 2000vm t6 moottoriin että saisi pyörätehoa 350hp? Vakiona on sen 270hp

[@emandradji]

How did you make the metering valve delete on the high pressure and low pressure fuel pump? Can I just cut the valve and use only the plate? Im running edc15 so it’s not needed

[@lassekalliokoski4842]

Yes, thats how we do on race car.

[@СтрогийКот]

U should make Bi-Turbo for daily drivers W211 OM648

[@turbodieselbuilds]

We are making this currently, It will soon be available in our shop 😊

[@harrijappinen]

Tää on jo kehittyneempää drifting-englantia...but go on guys...

[@niko7090]

Car manufacturers didn’t use compound turbo setups in their gasoline versions, do you have any idea why?

[@SamsaraCC]

this day new turbos are so good so they dont need compound setup, Compound is expensive to build and heavy. Look at that’s keskikorpi motorsport new S58 engine turbo, it’s very small but great a lot of power so not need to heavy compound setup nowdays turbos

[@timomikkola4045]

If other turbo makes 2,5 bar and other 0,5 bar, so it is really 3 bar together? I am not sure but I think it is not that straight forward. For me it would sounds like that 0,5 bar can not do anything because there is bigger pressure ahead. It would work backwards?

[@lovelizards2474]

The small turbo compresses the big turbos air 3 to 1. So just like two different turbos could have the same psi (HX35 vs stock hybrid), the HX35 will flow more are thus creating more power.

[@timomikkola4045]

@@lovelizards2474 Woops. That was my mistake. I dont know how I first though they are side by side. Now I immediately find my crazy mistake.

[@jamypiche9259]

Hi huys, i was wondering how your dual pump setup work, i've seen the picture on the website and i cant see the vaccum pump anymore can someone explain it to me ?

[@lassekalliokoski8775]

Oh yes. Car doenst have any vacuum control. So vacuum pump is removed and second rail pump is made to their place. And works well.

[@jamypiche9259]

@@lassekalliokoski8775 si There's no brake booster ?

[@lassekalliokoski8775]

True, there is not. Better brake control without

[@jamypiche9259]

@@lassekalliokoski8775 okay thank you for the info !

[@teukka_t4514]

olis mielenkiintosta saada sama selitys suomeks jollain kanavalla?

[@apinanmaito]

Tekstitykset päälle vaan.

[@turbodieselbuilds]

Tulee kyllä varmasti jossain vaiheessa 👍

[@kolumpols]

Joka kerta kun Lasse sanoo quite niin huikka!

[@muumionu100]

what specs hx40 and 60?

[@isacnr7]

Would you benefit from water and methanol injection to get the iat’s down? Or does the drift masters no allow that?

[@turbodieselbuilds]

We have had it earlier, but with no enough proper knowledge. Now we have some calculations made by awesome fan, how we can make effect to intake temp with only water. We should try that now, we have enough data to compare and see results how it really effects. After that is option to add methanol also.

[@teemulii]

riittäiskö pelkät vesisumut kennolle? vai kieltääkö säännöt ettei rata kastu tms?

[@mariusfridlund55]

😎🏁

[@neo1231]

A turbo is a power adder add a second turbo add more power simple math.

[@turbodieselbuilds]

More turbos = less sound... Not good for a show car

[@neo1231]

@@turbodieselbuilds I agree! Turbo is a muffler

[@JariMyllymaki]

Förtti förtti 🤣🤣

[@sergeykazannik4530]

🔥🔥🔥

[@hjthiessen]

Ooh sooo interesting, thank you very much 👍💭. I "fight" against EGT's and EMP's for years using VTG Turbos allows only seconds full throttle to prevent totally damage😂. Really GIGA cool video so much info. I have nearly 500hp with little NOS for cooling and of course WMI injection with GTD2973 VTG on 2,4jtd 5cyl.Alfa. Now i will go with compound. No matter how long it will last until good function. But i will need tips about turbo sizes and flap wastegates (regulate them with pressure only possible?) Will pay you good for advice! Go on like u do. It's nice to feel u love what u do, too🔧 🤗kzbin.info/www/bejne/eJjOhIt7aLWba9ksi=pgfSLgP9i8xZwGSH