THE SKID FACTORY - Compound Turbos
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- Опубликовано: 7 авг 2024
- Al covers what he's learned about feeding one turbo with another turbo - compound turbocharging!
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Please note: We like to make interesting car mods and show you how we've gone about it, but we can't promise that anything we show you will work for your particular car, or that you won't harm yourself, someone else, your car or your warranty doing it. Please be safe, be responsible and unless you know what you're doing, do not fool around with very serious machinery just because you've seen us make it look so easy. 
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![THE SKID FACTORY - Barra Powered Bedford Van [EP17]](http://i.ytimg.com/vi/MYiO1pLjS58/mqdefault.jpg)
Al and Woody , I really hope you guys realise how good of a show you have.
*realize
I could watch it all day!
realise* - depending on the parts of the world you live in, for example in the UK for a lot of words S's replace Z's. You ought to look up localisations of words next time before you "correct" a correct spelling.
What makes this so good is this is people telling you what you need to know and how to build things instead of acting and get you to buy product from a sponsor.
Anyone else think Al largely says “Stuff the internet!”
Al is becoming such a good presenter!!!
This, x100.
a word from a clever professional is well worth your time listening too.
@@tommurray8312 couldn't agree with you more Tom. That's why I usually listen twice haha.
I was thinking the same thing.
He is! He's getting much more comfortable in front of a camera. He still is good ol' Al though
"People mess around with old junk engines all the time... It's a sickness" Shout out to all the toyota 4K family
Takes effort to destroy that engine lol
3S** family :P
JZ family
Pietrek L never
302* cam big lift 110* lobe seperation, solid roller lifters, roller rockers, bored out to 1550cc, 12:1 comp, LS1 coils, twin dcoe 45 Webber's, 130hp................ Not worth the effort
30 minutes, no shit just straight talk from someone who knows what he is taking about. Cheers
"Its bigger then it looks" - my favorite al line
turbo yoda talking turbos with two turbos, one turbo turboing another turbo!
bgdwiepp drinking game every time Al says turbo
i ran out of lemon lemon squash ;)
Mark M send help, I got alcohol poisoning
yo, dawg...
Many places in Australia have limited resources for fabrication. That's what makes them so creative. Give this man a job and I guarantee you one way or the other he's going to get it done! Good on ya mate, cheers
I already had a fairly solid understanding of compound turbos but Al's explanation is just so simple and straightforward! Love it. Makes me want my own setup! I like AC though so it's not gonna happen..
Wonder if he'll do sequential next...
Look at him! He cant stop himself from smiling. He's right in his element. Love it
Congrats on the one year anniversary! This is easily one of my favorite series to watch. I enjoy the low-key atmosphere, and especially the knowledge packed into each episode. Good work Al and Woody!
..it's a sickness - yeah nah yeah
Nah yeah, it is. I am Aussie & this makes perfect sense, to most ppl here.
SOHC 4 Litre 4 lyfe!
Boys.... I would be really interested in watch the dyno of the compound turbo set... It would great to see how the tuner uses the 3 controls and what issues are thrown up. Another nice episode
I love compound turbos! The tractor pull guys have been doing them for a long time, and really have some extreme setups. The one I remember most was on an International 466 that had 4 turbos in 3 stages. Two in parallel, blowing into stage 2, then blowing into stage 3. He said it made 240 psi boost. Not an intercooler in sight. So I asked him why he didn't have an intercooler, then he said "it's the pressure that makes the horsepower." So I went home and did the math, and figured out that his intake manifold temperature would be 1000F. He could have gotten the same intake manifold air density with two-stage turbos and a good intercooler. And he wouldn't have been changing engine blocks every 20 passes.
I am absolutely loving these videos where we just sit and listen to a master of his craft talk about what he knows best. It's informative, and interesting, and it really showcases not just how much you guys know, but how smart y'all really are. You explain things in a way that makes a layperson like myself be able to understand, and that's a real skill. They don't call you Turbo Yoda for nothing!
What you're doing is great. Keep up the awesome.
Great work guys. I’m doing and have done before a compound setup on my Subaru Forester GT. Loved it!
Congrats on your first year of Skid Factory boys. It's been great following the progress of your builds and hope for many more years of success for you.
This was the best lesson learned. To see hand hear Al & Woody
explain how mechanical parts function and how they relate is "PRICELESS"
Thank you MCM😎🏁🏁🏁
There is no better car show on RUclips than The Skid Factory. Turbo Yoda dropping knowledge everywhere.
This was a pure master class in how to do some very intricate work. loved it. Yoda dropping some serious knowledge for the interwebs points
I've always been fascinated by compound turbo setups, thanks for taking the time to talk about this dark art
One of the best explanations of compound turbos ever explained by a bloke that works on petrol cars
I think we've just reached peak Skid Factory! This was the most interesting and informative episode to date in my opinion. Unbelievable stuff guys.
These are my favorite videos. Love learning Al. Thank you.
You are a true Legend Al, I'm from Cape town but I can tell you I have learnt so much watching your videos and you and Woody are EPIC, the way you figure out solutions to all problems you faced and I hope one day that I can make my way over to Australia and maybe one day meet you guys and maybe become your apprentice. KEEP UP THE GREAT WORK GUYS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TRUE LEGENDS!!!!!!!!!!!!!!
I sure appreciate you and the time taken to show your passion and knowledge.
Knowledge is pow...TORQUE
Compound turbocharger is exactly as a gas turbine engine, hot side exhaust go through small blades first , then expand through bigger blades to recover more energy. On cold side air gets compressed by big compressor blades first then smaller compressor blades the closer it gets to the combustion cans.
Exactly like compound turbo , hot side small turbine to big turbine. Cold side big turbo then small turbo
Except it's not called turbo compounding but staged turbocharging.
@@msengineeringdavid3702 are you talking about gas turbines or turbochargers? Because in turbocharging 'staged' and 'compound' are two different things.
Great explanation on the working of compound units.
Keep up the good work, big hello from Portugal.
I love these videos. I mostly just wiz around, youtube in ears when doing stuff. These videos have me sitting still, ears and eyes perked!
Thanks for a particularly good episode guys; I learned a lot from this one!
I'm running this exact setup on mine. It's frigging awesome. Would never go back to a single setup. Both turbos work brilliant together. 👌
Excellent, authentic synopsis. Well explained in simple terms and concepts.
Great episode! I hope to see this on the dyno. Keep up the good work.
Glad I follow this channel, really cool to see how these things work and why!
Turbo Yoda Al and Woody Happy 1st year. Hopefully we'll enjoy your vids for many many more years to come,
Great to see the evolution of Al becoming someone who was initially camera shy in MMC to becoming a top class presenter in his own right, big love from Ireland
Love it, someone knowledgeable talking on a great subject
Thanks for sharing all your knowledge Al!
That was a great explanation of compound turbo charging well done Al
I've never done any work to a car. ever. But I *will not miss* an episode of this!!
Tremendous stuff Al & Woody. :)
Just cranking, really enjoyed this, looking forward to the grumbling about Bedfords, but really liked this series. Congrats on a year. \m/
Great explanation!! The triples are for exceeding 100-150psi. Crazy boost land. The fastest 4 cylinder is a trip compound Aussie rig I believe.
Great channel. Looking forward to the rest of Bedford build and whatever else you got going.
Aweseome video my guy. Was getting a chuckle listening to the complaining of mounting t3's and the wastegate when im trying to figure out how to mount an s400 under the hood with a v8 taking up most of the room. You do clean work and i like the no bullshit.
Al’s an artist.
Awesome job looks much better, hope it brings results. Keep up the good work Skid Factory is one of my favorite channels. Wish I could have made the meet and greet in Dunville but it was the same day my girl friend was getting bone marrow transplant :(
Takes a mad man to invent the turbo. It takes a crazy person to mess with one. Nic video big lad👍
Great video Al! Keep up the good work 😀
Way to go Al I could listen to you all day mate and I usually fall asleep listening to people 😂
This show is awesome! I'd love to see the tuning process, the nerdier the better.
I've never fully understood these setups until now. Thank you.
Another great video Al never heard of compond turbos till this video. 😉👍👍👌
Just put a TD04H in my Subaru Outback! Got it for free from Albania, putting in a Japanese car in Canada! Great content guys!
Excellent presentation. Thank you!
Loving the show keep them coming guys
BEDFORD HYPE! I have been looking forward to more updates :)
this was really good learning for me! Thank You!
You guys are boost gurus!!! Thanks for making these gr8 videos!!
I like the way you think Al.. i was always told is what you are saying about the pressures across the head best way is equal in and equal out across the head .. placing the external waste gate on the small turbo and allowing the restriction to move around it but still feed the bigger is the way i would do it
finally a compound turbo video!!
I’m really liking this diesel tuning tech stuff you guys are talking about.
Great job Al! keep up the good work
It makes me happy I just so happen to have the same shield as Al I didn’t think anything about it when I bought it I’m just lucky, you guys are a huge inspiration
Hole saws for days. Love the content you guys rock B-)
Brilliant job, mate!
Nice job mate well done.
Awesome! I'd never really understood how they worked before.
I really enjoyed this mate
Very informative & interesting!!! Thanks guys :)
Great explanation on turbos. learned heaps.
Yaaaay Bedford. You're very generous with your hard earned knowledge.
Awesome content, thanks guys!👌👌
Awesome presentation Al! You've really become a great teacher. Please don't forget gloves when you weld mate!
TurboYoda... Legend... I was trying to understand what you said, I still have no clue what you on about, but i think i learnt something... maybe later on... but that was some great info. cant wait for the barra bedford... sweet.
Love the straight up tell it like it is approach.
Happy Anniversary Skid Factory
U fellas rock one year congrats but we all knew that it would last because of the great content
High five boy's
Al, have you guys ever considered mounting the external wastegate on the outer portion of the Turbine housing???
The net result is you (if you installed in the right place) increase the turbine size at the same time you bleed off boost. Make sure you mount it at an angle so the turbine gasses don't make a sharp turn.
The turbine housing is cast steel not iron, so it welds easy.
Amazing Show Yet Again!!!
First off i know very little about diesel turbo engines, but i'm glad i watched this video. I was always under the impression that compounding meant that the small turbo was on the manifold then feed the larger turbo with the pressured fresh air (or what would usually go to the TB).
Never heard of this before and its very fascinating to me, I've heard of a turbo and supercharger combo before. Thanks for sharing and as always Keep Building👍
It's primarily a diesel thing, I can't recall any petrol cars using compound turbos...
Same same but different haha. I’ve had a compound turbo setup on my Subaru and it worked great! Until i starved my low mount turbo of oil haha
There are a number of gasoline engines that use compound turbo setups. The Toyota 2JZ-GTE comes to mind.
Subaru b4 legacy ?
Jacob Skinner that’s a sequential turbo setup. One is on then the other
Great video, thanks team.
Compounds are probably the hardest to tune, making the transition smooth is double the tablespoon have to modify basically. When tuned correctly it can drive like stock and be a monster, my Cummins runs compounds and now limited by fuel… it tows like tug boat, it’s a beast, and being able to have the air for your engine is awesome. The Cummins guys run compound just like this but they run triples just for the dyno numbers, but you will notice when they sled pull, the run compound, or just one big single cuz your literally pegged, those big singles though take nitrous to spool the turbo but the triple doesn’t need nitrous to spool. Because the primary turbo helps, but you will be limited in dyno numbers overall on a compound your power band will be 5,000 rpm of usable driving instead of spooling up at 4400 rpm on a Cummins and using 1500 rpm of usable power.
Keen for the old before and after comparison, will eagerly await followup video
Thanks for making these informative vids fella’s, keep up the awesome work on the channel. When are we going to see this compound td ?
I love this stuff . I learn so much . Never any bullshit. Love it
Honestly, this was a great video on compound turbos.
I want a follow-up on this car!
Want to see this getting tuned!!!!!!!!!!! I know.. it won't be easy. Keep them coming!
Havnt watched its yet. But i already know its worth a thumbs up.
Would like to see it on the truck...and how much it makes...and of course some skids
Im part way thru doing this on a pajero with a 2.8 diesel so was great to see the video
Yeah. these guys would make great ads for Australia I reckon. An anodyne for all the crassness that often seems to be what people are shown. I think I've said it before in other words, but it's relaxing to see the calm competence applied to problems.
Great stuff guys! Just some useless info, the original compound turbo charger was a complicated set up that was used on radial aircraft engines like the engine in the super constellation,
it was coupled directly to the crankshaft through a weird clutch set up ie; not used for boost but introduced more torque directly to the crank.....
Amazing info. Thanks mate.
The reason you would want to go to triple turbo setups is to allow for better spooling speed vs one very large atmospheric charger. It also allows for lower smoke output on the street during transient throttle on non emissions diesels making above about 1000hp while making throttle more like a factory truck.
f**king top show al and woody, love kicking back smashing lemon aids and watching the skid factory... gotta do more skids in the shop, fill it full of smoke..
And there I was remarking in the last eps comments that it was a pity you didnt touch on Compound Turbo set-ups..... :v
Glad you saved it for a separate, more in-depth & practical episode- thank you!
BLeeKiis Too haha me too
The real benefit amounts to lower boost threshold and lag minimization, but the cost, complexity, weight, and space required for compound (i.e., sequential) setups is such that many people choose to go the single-turbo route.
A year already wow, keep up the great footage can't wait till Monday 👍👍👍
Good stuff Alan.😊
Similar concept to steam expansion engines, Al - smaller high pressure piston exhausts into a lower pressure cylinder to utilise spent energy. Great vid, thoroughly enjoyed nerding out in a straight-foward way and look forward to more :)