There are a few errors in this presentation, twin turbo applications are broken down into dual (one turbo per bank), parallel (twin turbos with a common hot side), compound (one turbo raises the boost above atmospheric, the second boosts to final, the turbos run continously), and sequential (smaller turbo boosts the larger turbo and the smaller drops off at a set rpm/pressure, only one turbo provides boost at a time minus a small transition time).
@@JCMediaYT FD RX7 doesn't use the setup you describe. It uses pressure regulated parallel sequenced, where small doesn't feed large, but where small gets all gases till set pressure then manifold starts feeding to spool up the large for the higher flow.
compound turbos can reach higher boost whilst having a quicker spool the main reason to got compound is because your compressor map dosent go over 5 bar which is a deal breaker if your try to hit 15 bar
Thanks for the information and subsequent corrections. I would like to use a dual turbo setup (one per bank) on a 5.2L based 383 Stroker (500HP-600HP NA) in a Chevy S-10. Although ideally a dual compound setup would be outstanding if theres enough room in the engine bay. Small turbo blown into the Large turbo continuously (1000HP+). Unless I'm missing something obvious that would prevent this from working correctly.
I like your video, but i miss A LOT of info. Where is the PR multiplying factor in all this ? When do you pick a tru compound over seqential. When do you need the hi boost. What about compressor Efficiëntie ? EMP over IMP And the need of interstage cooling
@@JCMediaYT It's really no intention to offend you, but your video starts with a real compound setup and a seqential setup and I do think the biggest difference between the two is that one deliver high PR because the multiply factor. and that the others just run on a regular PR with out the need of interstage cooling.
Good video, but compound and sequential turbo setups are not the same. The big difference between them is how exhaust is flowed thru them and how they feed the engine the compressed air. The sequential turbos are directly fed exhaust from the engine when the compound feeds one of the turbos normally while the other turbo is fed by the primary turbo and wastegate which is why it is important to look at the compressor map between the turbos and size them appropriately.
Nice video animation but it's a little too simplified. Sequential turbo setups like the one on the Supra have 2 valves in the exhaust and one in the intake blocking off airflow to the larger turbo. One exhaust valve allows the larger turbo to "free spin" without building boost. The second large exhaust valve opens to spool the second turbo.
Apparently all these commenters didn't need to watch this because they already knew all the answers🤔...anyways nice video...thank you...can u also turn the music down a bit so we can hear your beautiful voice better
I really don’t think you know what you are even talking about. Your pros and cons are completely bs, and how compound turbos even work or set up is wrong. Might want to read up more.
and how they are wrong and bs? please do explain. I'll even give you the sources I used.. www.carsdirect.com/aftermarket-parts/the-benefits-and-drawbacks-of-twin-turbos www.sgcarmart.com/news/writeup.php?AID=135 www.pistonheads.com/news/general-pistonheads/what-is-sequential-turbocharging-ph-explains/38028 ruclips.net/video/3wFuR1x-Hes/видео.html
That fact that you said compounds are more complex less tunable and less reliable any diesel performance channel will debunk your theory, also small displacement don’t run small because of weight of the wheels, it’s due to availability to exhaust a 1.5 doesn’t have enough exhaust to run big turbo. Savage fabrication would be a good source for you to educate yourself on how turbos work.
yes, as far as the valve actuated ones they are more prone to failures and have more of a restriction than parallel ones. however you are right, I probably should have mentioned that the pros and cons are different for compound sequential setups where it feeds right into the other turbo, thanks for mentioning that!
Compound is not the same like sequential. All compound are sequential but not all sequentials are compound. Compound has 2 size of turbos. Sequential can have 2 same size turbos
Yes but why would you need it? A single turbo can deliver plenty of air and pressure for a small engine like that. A cheap used garrett GT17 or GT25 or a Mitsubishi TD04 is fine for 200hp, they might even be too big for that engine. 2 turboes would just take up to much space in plumbing compared to a slightly larger single.
Whoa, lots of very confusing terminology flying around in the video. Compounding and sequential are nothing alike. You keep showing a picture of one while calling it the other like they interchange. They are two VERY different methods from each other. I get it that english isn't your first language, let me know if I need to explain the differences.
firstly, thanks for the feedback and calmness, in hindsight yeah the information in the video was a bit unclear, even while doing the research for it, there were several different articles saying completely different things which only made things worse. if you don't mind explaining I would gladly appreciate it!
There are a few errors in this presentation, twin turbo applications are broken down into dual (one turbo per bank), parallel (twin turbos with a common hot side), compound (one turbo raises the boost above atmospheric, the second boosts to final, the turbos run continously), and sequential (smaller turbo boosts the larger turbo and the smaller drops off at a set rpm/pressure, only one turbo provides boost at a time minus a small transition time).
yup, thanks for the correction. Made the mistake of saying compound and sequentials are the same when they're not... Pinned your comment
thank you for posting this so i didnt have too lol
@@takingafatdump which errors?
@@JCMediaYT FD RX7 doesn't use the setup you describe. It uses pressure regulated parallel sequenced, where small doesn't feed large, but where small gets all gases till set pressure then manifold starts feeding to spool up the large for the higher flow.
compound turbos can reach higher boost whilst having a quicker spool the main reason to got compound is because your compressor map dosent go over 5 bar which is a deal breaker if your try to hit 15 bar
Thanks for the information and subsequent corrections. I would like to use a dual turbo setup (one per bank) on a 5.2L based 383 Stroker (500HP-600HP NA) in a Chevy S-10. Although ideally a dual compound setup would be outstanding if theres enough room in the engine bay. Small turbo blown into the Large turbo continuously (1000HP+). Unless I'm missing something obvious that would prevent this from working correctly.
I dig the music. I play soprano saxophone and clarinet.
I like your video, but i miss A LOT of info.
Where is the PR multiplying factor in all this ?
When do you pick a tru compound over seqential.
When do you need the hi boost.
What about compressor Efficiëntie ?
EMP over IMP
And the need of interstage cooling
thanks, this video was only meant to go over the basics of it, not the very technical details of it
@@JCMediaYT It's really no intention to offend you, but your video starts with a real compound setup and a seqential setup and I do think the biggest difference between the two is that one deliver high PR because the multiply factor.
and that the others just run on a regular PR with out the need of interstage cooling.
Good video, but compound and sequential turbo setups are not the same.
The big difference between them is how exhaust is flowed thru them and how they feed the engine the compressed air.
The sequential turbos are directly fed exhaust from the engine when the compound feeds one of the turbos normally while the other turbo is fed by the primary turbo and wastegate which is why it is important to look at the compressor map between the turbos and size them appropriately.
Nice video animation but it's a little too simplified. Sequential turbo setups like the one on the Supra have 2 valves in the exhaust and one in the intake blocking off airflow to the larger turbo. One exhaust valve allows the larger turbo to "free spin" without building boost. The second large exhaust valve opens to spool the second turbo.
thanks for the feedback and info, was a bit limited in my animation skills so hopefully future ones will get better!
@@JCMediaYT No worries, look forward to it!
Great video. Thanks for sharing
thanks for the feedback!
Very nice explanation!
thankyou! glad it helped you
Apparently all these commenters didn't need to watch this because they already knew all the answers🤔...anyways nice video...thank you...can u also turn the music down a bit so we can hear your beautiful voice better
yup, made this change in later videos since I realized the music was a tad bit too loud. thanks anyways!
@@JCMediaYT thank you!!! I will watch a few
@@burntnugget1854 cool, many thanks! feel free to leave any feedback, any is appreciated 🙏
Some of us do this for a living.
Twin parallel turbo usually for V shape engine, due to header length to reduce turbo lag CMIIW
correct
I really don’t think you know what you are even talking about. Your pros and cons are completely bs, and how compound turbos even work or set up is wrong. Might want to read up more.
and how they are wrong and bs? please do explain. I'll even give you the sources I used..
www.carsdirect.com/aftermarket-parts/the-benefits-and-drawbacks-of-twin-turbos
www.sgcarmart.com/news/writeup.php?AID=135
www.pistonheads.com/news/general-pistonheads/what-is-sequential-turbocharging-ph-explains/38028
ruclips.net/video/3wFuR1x-Hes/видео.html
That fact that you said compounds are more complex less tunable and less reliable any diesel performance channel will debunk your theory, also small displacement don’t run small because of weight of the wheels, it’s due to availability to exhaust a 1.5 doesn’t have enough exhaust to run big turbo.
Savage fabrication would be a good source for you to educate yourself on how turbos work.
yes, as far as the valve actuated ones they are more prone to failures and have more of a restriction than parallel ones. however you are right, I probably should have mentioned that the pros and cons are different for compound sequential setups where it feeds right into the other turbo, thanks for mentioning that!
Compound is not the same like sequential. All compound are sequential but not all sequentials are compound. Compound has 2 size of turbos. Sequential can have 2 same size turbos
Sequential or parallel can work on inline 3 engine like kei truck 660cc?
Yes but why would you need it?
A single turbo can deliver plenty of air and pressure for a small engine like that.
A cheap used garrett GT17 or GT25 or a Mitsubishi TD04 is fine for 200hp, they might even be too big for that engine.
2 turboes would just take up to much space in plumbing compared to a slightly larger single.
Whoa, lots of very confusing terminology flying around in the video. Compounding and sequential are nothing alike. You keep showing a picture of one while calling it the other like they interchange. They are two VERY different methods from each other. I get it that english isn't your first language, let me know if I need to explain the differences.
firstly, thanks for the feedback and calmness, in hindsight yeah the information in the video was a bit unclear, even while doing the research for it, there were several different articles saying completely different things which only made things worse. if you don't mind explaining I would gladly appreciate it!
I would like to hear you talking without background music
Yo drop the music
The Porsche 959 is more like 450hp not 276hp.
Tanx
Sequential..... compound
Music is distracting
noted!
ternyata org indo
Lah
Langsung subs
You got it all wrong regardind sequential turbos and compound turbos. Two different working setups. 👎👎
where was it wrong?