Routing Wastegate and Blow-Off Valve Lines | Explaining how a BOV and Wastegate Work
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- เผยแพร่เมื่อ 25 มิ.ย. 2024
- In this video, I will explain how a blow-off valve and a wastegate work and show you how to route vacuum lines to each. There are many misconceptions about the purposes of the wastegate and blow-off valves, but in this video, I will address their true purpose.
00:00-00:19 - Intro
00:19-06:07 - Wastegate
06:07-10:20 - Blow-off Valve
10:20-12:12 - Plumbing
12:12-12:35 - Outro
All video taken by the Mile High Mechanic
All demonstration provided by the Mile High Mechanic
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Boy I thought this was Chris fixit for a second. When it started lol
Best video iv seen explaining the diffrence. Thank you sir.
Absolutely!!
K-series turbo FTW!!!
Yessir!!
This is the best explanation I’ve found on TH-cam
I appreciate it. Glad you found it helpful!
Literally
Very informative! I've been a car guy my whole life but never really played with boost. Building a turbo kit for my truck and putting a Paxton on the Mustang. This is helpful in both cases
Hell yeah, glad I could help!
Thank you for your useful video. My question is, the hose that we pull from the turbo nipple sucks the air or blows the air out ?
That is a boost reference, so it reads positive pressure while boosting. At idle it may read vacuum, but it depends on the size of the turbo. To answer your question more clearly, that nipple should be tapped into if you want something that requires positive pressure ("blowing") like a waste gate.
@@TheMileHighMechanic thank you bro❤️
@@AlexExecutive absolutely 🫡
@@TheMileHighMechanic then in electronic selonoid top port is connected to turbo nipple with a 《T》. if positive presseure goes into top port it causes decrease boost and opening wastegate valve sooner. isn't that right? im a little confused
@@AlexExecutive Look at 2:20 the top port is only for a boost controller. It adds positive pressure to the top to make it harder to open the valve. This means that the bottom port (boost reference) must overcome the pressure of the spring and the dome pressure instead of just the spring. This increases boost. Hope that makes sense.
fair play nice and simple 😎
👌👌 absolutely
Nice, thank you.
Absolutely!
Great explanation. Helped alot
Glad I could help!
* there are many ways to have wastegate boost control
1-electronic
2-co2
3-bleed off
And probably more
*the blow off spring is a measure of boost control, the spring will bleed off boost if you go over the rated spring rate in the blow off valve
The spring in the blow off valve is there for nothing more than to keep the valve closed at idle. The blow off valve is operated completely on pressure differences between manifold and intake. This is a common misconception.
The waste gate spring, however, works exactly the way you described...it bleeds off pressure when the pressure in the bottom chamber reaches the rating of the spring.
Keep up de vids its been over a month on the turbo toaster
New vid Wednesday! I've been really busy with school stuff but I'm getting back into it
if we have a electronic boost controller and double port wastegate ,then we set it up
my question is buttom port is gonna suck the air and the top port gonna blow the wastegate diaphragm to increase boost?
Yes, adding positive pressure to the top of the waste gate is called "dome pressure" and is a way to increase the release pressure of the waste gate. This will boost the turbo more.
@@TheMileHighMechanic cool then the bottom port works with negative pressure?
@@amirnr5063No, bottom is for boost reference...(2:20)
What is your boost reference for the wastegate plumbing and what do you hook it up to in general? Great and easy to follow video btw.
I ran mine straight to the turbo. A lot of turbos have a nipple on them that you can use, but if you don't have one I recommend tapping into the charge pipe around the turbo.
@@TheMileHighMechanic thank you Soo much, that's the thing that everyone else left out when explaining how a wastegate works and go figure it's something this simple
@@rzx_quantum3089 Yep, these things seem daunting at first, but once you break it down they all become simple.
Currently have a 2019 q50s red sport 3.0L Twin turbo. I would like to install HKS BOV…mostly just for the sound. The car stock comes with a waste gate. Would me installing a BOV with out a tune be safe ?
Every turbo car has a wastegate and BOV...if all you are doing is removing the BOV and replacing it with another one, it will be fine.
What is the "charge pipe" ? Thanks
It is the pipe that transports the charged air from the turbo to the intake manifold.
@@TheMileHighMechanic OK thanks for explaining that.
@@jackspratt4343 absolutely!
Do I need a wastegate or is a blow off valve enough
Without a wastegate, you will over-boost your engine. So in short you absolutely need a wategate.
Is the co2 canister something you'd use on a daily?
I've seen them used on daily drivers but it is a lot simpler to skip out on the whole system. Mostly I see them on drag cars so they can switch up the tune on the fly by being able to change the boost number on the computer.
Thank you, got the answers I was looking for. Bonus it was on a k series so translates perfect to my situation.
Glad I could answer your questions!!