Internal VS External Wastegate Explained [GO FAST BRETT]
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- เผยแพร่เมื่อ 6 มิ.ย. 2024
- Ever wondered what a wastegate does and whether you should be using internal or external? In this episode you'll find out from the guy who actually designs them!
In this brand new series created by Mighty Car Mods, Go Fast Brett explains all things turbo, blow off valve and choo choo.
This series is proudly brought to you by Mighty Car Mods and GFB
www.gfb.com.au
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It is so nicely explained now I want an external wastegate, and I don't have a car!
external wastegate on my pc bro
@@teksaucee your pc is turbocharged?
@@Madvillian bruh
Do you have a car yet?
do you have one yet bro
Internal gate: Sad flappy boringness.
External gate: Happy flames underneath the car during anti-lag funness.
Nice save the dump pipe explanation...
"...if you're using it in a place that would allow such things"
XD
last time I was this early
I rated the video with five stars.
Hi Bret,
One thing you did forget to mention is that it is crucial to ensure an external wastegate is correctly positioned on a manifold, so that the exhaust gases don't bypass it at high rpm. I have seen a 46mm one offer zero bleed off at high rpm from poor positioning, just because the exhaust gases are travelling so fast that they completely bypass the wastegate. We even removed the wastegate completely to prove the point LOL.
Said it before and I'll say it again, I am loving this series!
loving this series. so informative! thanks for teaching us all Brett!
loving this series, keep it coming guys :)
The way this guy explain stuff is so good.......👍🏼👍🏼
Super useful information, thanks a ton for posting this!
keep em coming, very useful info!!
Hi Brett, great series, would you consider doing a video on electronic boost controllers please?
Love this guy. So professional. Talks like he's supposed to be at the V8's on a Sunday.
Yeah, it's better than Engineering explained, and not as confusing as it.
Totally agree. I have noticed the Engineering Explained guy every once in a while oversimplifies a system, specifically treating an open system as a closed system, and it leads to poor in-depth understanding. Go fast Brett is the man. The real deal.
I have never understood why you would want to dump all of your boost pressure to the atmosphere, but now I do. Thanks Brett.
EXCELLENT video bro.
Hi just wondering if you have any videos on how to plumb an external wastegate back in to the exhaust to meet state laws? And advice on positioning on where to feed it in to the exhaust location wise?
this guy is awesome , make more videos of go fast
Having a N/A vs a boosted car is like being in relationships. You might get better sleep at night, but at the same time it is so boring.
Good series!
finally, i've been waiting so long
I have a V7 JDM WRX so I am needing to put a JDM downpipe on them. I found a company who does both a catless vs catted and I originally wanted the catted because I was worried about the smell and boost creep butr decided to go with catless due to cost. However, watching this has made me again re evaluate my choices. Is it cheaper to just buy a High Flow cat and be done with it, or cheaper to grab a Catless downpipe and do an internal to external wastegate conversion? I am planning on replacing my TD04 with a VF30 at the same time as I do the Downpipe.
Also, with JDM WRXs, do you need to replace the Upipe or can the stock one be used with external wastegates?
loving the new series all about boost .. just got a corsa vxr an was wondering about the best waste gate/ blow off valve ? help anyone?
Go fast Brett, can you do some explanation on the dark art of turbo charging diesel, And perhaps how to maximize the power available from a turbo diesel engine.
these vids are great, keep em coming.
It's essentially the same thing. More air + More Fuel = More Power
(a bit over simplified, but works for this example)
I should also note that if its a factory turbo diesel, the turbo isn't there to make power, its there so the engine can actually suck enough air to work at such low rpm's
/DRIVE did a segment on Diesel which is better than this rubbish.
Was Brett the one who drove the S15 and Liberty in your S15 vs Liberty challenge?
Man I watch u all the time I love your TH-cam and would love to play gta on ps4 with you some time I wanna do what you guys do.
Just a question, can you run an external wastegate with having a turbo that has an internal wastegate?
Thanks Brett
so for antilag systems u use external wastgate and feed it back into the system befor the turbo? (to put it basic)
I just done did learned some stuff!
i am wondering how does VTA vs VTE affect the exhaust sound? I'm going for the boxer rumble and don't need anything that will degrade the sound of it.
Man brett is like dumbledore teaching use a magic trick
also to note EWG can help you eliminate boost creep if your IWG can't flow enough
There was a few things he could of touched base on but didn't, what you mentioned for sure... Seems like these are shorter every week...
Can you make a video about anti-lag system?
oh man! MCM and Dirtcheapdaily on the same day!!
My car comes with a tiny turbo and OEM WASTEGATE. i'm about to install a BOV (atmosphere). should I Disable the wastegate (Closed all the time) or the Two can Co-Exist? [ps: its an internal wastegate with that external actuator thingy]
What about position of an external gate?
If you have it where exhaust pulses don't collate properly you won't be able to control boost pressure as the reference is still available to spool the turbo.
Best position of an external waste gate is on the exhaust housing of the turbo before the exhaust wheel.
my tuner said that my wastegate is too big for my turbo. I have a td04 turbo and a tial 44mm external wastegate. What should I do?
how do you adjust boost pressure using your stock internal waste gate? and how do you know how much boost youll be making
manual boost controller and fit a boost gauge :)
What about the Borgwarner EFR turbos internal wastegates?
These need to be longer, like around 10min.
I think these are perfect, the average person has a terrible attention span
should have explained how wastegate size works and why people would go external gate instead of porting an internal etc.
Awesome brett thanks for the info..how much do your developed wastgates retail for?
check out the GFB website man its awesome
What's the retail on one of those?
+lockij More than you can afford pal!
+Bones12x2 smoke him!
**eating shrimp** ...nom nom nom
Mcm
Can you please make a video off
how to instal a Diesel blowoff valve
Thank you
You might want to learn how a diesel works first.
love it
thanks bro
I once made a jogger dive into a bush by boosting past him with a venting wastegate haha. There's a funny video of me taking my mum for an unexpected boost on my channel if you want a laugh :)
I remember a r32gtr making a petrol station attendant dive behind the counter once :D
External wastegate (air through the exhaust setup) = Very nice sound
The only IWG setup that's top-notch, elegant in design, and more than sufficient for the job is that found on the BW EFR turbos, IMHO. I love those.
Im looking at getting an EFR 8374 twin scroll internal wastegate for my 2jz, I hear the factory actuator is crap but I don't know how true that is. Turbo smart already made a 2 port actuator upgrade for the EFR series turbo already.
Brian Jeppesen That's the first time I heard of issues with the EFR wastegate actuators. All I've ever heard about them is how awesome they are, next-level, etc. After all, they are run on F1 cars, so they're definitely viewed very highly in the professional racing community. Perhaps it was an old WG actuator design that was revised? Was the person(s) saying it's crap reputable and speaking from actual practical experience?
+Numinous oh I didn't know they've revised it, I'll have a dig around some more thanks for the heads up. It's the Rotary guys that's saying the actuator isn't very good at higher rpm the flap would open abit as there's no 2nd port in the actuator for the boost to hold it shut and they would get boost drop off.
Brian Jeppesen Hmmmm, well that could be a lot of things. On my platform (Mazdaspeed 3), we drool over these and have had great luck. I'd personally go with an EFR7163 (we're 2.3 liters) and have it tuned for 500whp.. It's an amazing, fast spooling turbo, with very low boost threshold and amazing transient response. Some other guys talked about using the EFR8374, but I think it's too big for us for anything other than a dyno queen, given our displacement. Regardless, awesome turbos.
+Numinous thanks for the info man nice to get feed back from someone who have actually used it, I got a Nissan Z32 with a 2jz swapped. Being a 3 liter I think 8374 would match it alright.
I need a 944 Turbo now(They have these stock)
I have a Q: I have seen some cars with an exhaust system, but they have been spitting flames right under the engine at redline. Does that mean that they had an external wastegate that was throwing the gasses right into atmosphere?
I have the same question and sadly after 5 years no one answered your question
@@diego_solis Yeah thats most likely an external wastegate. A pipe going from the manifold that lets out exhaust pressure to adjust the boost pressure.
Great concept and I am really learning stuff from these videos eventhough I thought I at least had an ok grasp on how these things work.
I understand that this is sort of the generalized version of how it works but I assume a lot of these "truths" vary depending on application. For instance dumping boost into the exhaust is that generally always detrimental? I am sure it depends on the diameter and flow characteristics of the exhaust since sometimes a larger volume of gas in a narrower pipe has a higher flow speed and hence more inertia (up to a point) and that actually helps clear gases more efficiently. This is analog to situation in the intake where an optimal portsize is not always the largest one but the one that keeps the speed of the gasses up without beeing so restrictive it saps power (optimal portsize varies with amount of gasflow). Same with dumping boost it in proximity to the turbine blades. I am sure in a factory setup it is "good enough" but could it not be constructed so the dumped boost actually improves the flow/pressure-conditions after the turbine blades? Can the flow be made to be more laminar? Just an idea :) Keep this up.
A properly sorted External wastegage should in theory act like exhaust headers ( ie a mild scavenging effect ) However at extremely high flow rates of exhaust gas you would be introducing a turbulent effect causing a the exhaust gases to slow down...............Internal gates have their places.......up to mildly modified street cars you wouldn't really notice the difference and the money would be better spent on other areas.
Robert D I am sure you are right. I just find it fascinating that these are actually very complicated engineering problems where so much depend on the specific application. A pro like Brett who both have the technical knowledge and experience has to "dumb" it down in order to fit it into this format. I would not mind a longer more in depth video similar to "Engineering explained" :)
"Connection Error"
Lol
Internal Wastegate FTW: All the Blow-off without the Show-off
Wastegate straight into atmosphere... :'D
is that turbo header belong to marty?
Can I add both
Rip Harambe
Whats up with the weird af hand zooms?
Does one sound louder or nicer than the other. I assume each person has their own preference. Be nice, I'm new to this stuff :)
The external will be louder if you vent it to atmosphere, whats known as a screamer pipe but if it is just dumped into the exhaust it will sound more or less the same
It depends on how you run the dump if you run an external set up. If you run it back into the exhaust it will sound much like an internal wastegate and won't make much of a difference. If you dump to atmosphere you are basically running a straight pipe everytime your wastegate opens. So it will sound like your exhaust normally does until you hit full boost, your wastegate opens, and it gets a lot louder. Wastegate dumps are sometimes called screamer pipes for this reason.
but i thought the wastegate closed when you reached full boost , isnt it like that ? (im also new to this stuff sorry if i didnt understood )
+nah valdez Well, you understand that a turbo uses exhaust gases to spool up, right? Think of it this way, a wastegate pretty much literally "wastes" exhaust gas once you reach your target boost pressure. It opens in order to let exhaust gas through without further spooling the turbo to prevent over boosting. That gas is "wasted" because it's not being used. Think about it this way. You want to fill up the sink with water. You turn the water on until it reaches a certain level. If the water is exhaust gas you can't turn it off, right? You don't want to overfill it, so you have to open the drain (wastegate) in order to maintain a constant level. the water is coming in and the extra is being wasted down the drain to try to maintain a constant level. Might not be 100% accurate but it should help to understand it.
+that.nissan.punk yes i get it now thanks, and would it also "scream" when you close the trottle right ?
it's a 1.6 t btw
GFB Waste Gate... GO FAST BRETT?
The company is called Go Fast Bits GFB :)
haha Very likely "Cover" But we all know it's Brett now. although Thank you!
awww yeah..
External wastegate = space for screamer pipe :)))))
Are there any european resellers of GFB parts?
Just use Turbosmart.
External all the way
Not to mention if you dump it to atmosphere it is properly loud and utterly obnoxious under load, making me cream my pants everytime
EWGs are fun but not good on a daily lol
BOOOOOOOoooooooost!
In what way is the internal wastegate better?
Manufacturing cost really, and also it's easier to manage emissions. It makes way more sense from a factory perspective.
And you won't get raped by the Australian police when you get pulled over for having a turbocharged car.
I'm sure having an external wastegate is legal as long as you vent into your exhaust and not to atmosphere.
Here in SA, external wastegate of any sort is banned, and I believe it's the same everywhere else.
They are legal if it is engineered. They do the same thing emissions wise as an internal gate when plumbed back, however its just illegal purely because they are non stock mechanical parts. E.g. If you welded shut an internal gate, and installed a plumbed back external gate. It would be illegal, but extremely easy to engineer.
Nice investment hu... double triple quadruple down...shop product tube....well u get the rest dont u....cool ...
:)
I dont have a turbo
cool
In another words a screamer pipe is illegal 🥲🤣
wait what?
Just started making videos, check out my Subaru engine rebuild
First lol
All I head was: "I have made a waste gate, you should buy it"
Maybe listen with your ears instead of your arrogance?
This is pretty much what this whole "Go fast Brett" series is as with his blow off valve segment he didn't even touch on wide open throttle turbo surge and instead pretty much said if your turbo flutters when the throttle is closed it is bad and you should buy my product, which infact when the throttle is closed and when the turbo "flutters" the use of a recirc valve/blow off valve is to stop reverb through the Airflow meter/MAF to cause an incorrect reading and cause the car to stall out when coming to a complete stop.
Even Turbo Yoda said or anyone who is switched on with turbo's knows flutter isn't bad.
Wastegates are for quiters...
nobody cares about all that, the only important advantage is the wooshy whistly noises!