I love this series, I learn so much from Brett. Keep them coming please!
@MuteLunatic8 жыл бұрын
Lol this series is turning into "Please stop bothering our tech support for stupid shit" or "Yes I know it leaks a bit when you apply air to the wrong side but it doesn't matter, its not why your stupid car still runs 16s, learn to drive and stop bothering us"
@Flako928 жыл бұрын
lol
@mattbonaccio35228 жыл бұрын
Hey Brett, can you please make a video about wheel trim and housing A/R ratios? I think I might finally understand them if I had a video to go along with the explanation
@Carmelldansen4eva28 жыл бұрын
Damn I so happy this was uploaded at the right time because of a shit day.
@willclark4918 жыл бұрын
I am learning sooo much from these videos! Why has it taken so long for this kind of simple explanation to be available? (Probably because it has been available but I didn't even know what questions to ask!)
@carleriksson72838 жыл бұрын
Tip: If you suspect you have air leakage, buy start gas and spray on the airways with the car running car on in idle. If you hear the engine start to go up in revs, you found a leak.
@dylnbxtr8 жыл бұрын
carb cleaner works well too. except it will cause the car to stumble
@GCS882 жыл бұрын
This is a bad test as you didnt put any pressure inside the piston port of the valve to simulate how well it will hold under boost.
@Scudw0rth8 жыл бұрын
Great video as awlays, loving this series! Have a GFB DV+ on my GTI and it holds boost like a beast! Also fixed that annoying whine you get with the stock DV while at WOT. Great vids and great products!
@Ryzza58 жыл бұрын
I'll just nod and pretend I understood
@renaldosimpson87554 жыл бұрын
I need help. I installed a valve but now my car has 12 codes plus my rpms at idle are high
@dobertv1824 жыл бұрын
Renaldo Simpson 𝐯𝐚𝐜𝐮𝐮𝐦 𝐥𝐞𝐚𝐤
@najirmoore64913 жыл бұрын
@@renaldosimpson8755 god damn
@murcC478 жыл бұрын
Ok I don't mess around to much with turbos, only really on diesel trucks, I'm more of a blower, super charger guy......so how would you properly check for boost leaks ? Love the series and keep up the good work.
@OliverUnderTheMoon8 жыл бұрын
I think the last video showed how you can check for boost leaks. Grab a condom.
@dylanknight47528 жыл бұрын
the main point i got was...theres a lotta people that think they know everything and try to sound smart when talking about boost leaks....but then brett comes in and says yall are stupid. lol
@darusgn8 жыл бұрын
good series, informative content - 10 leaks that dont occur in daily use out of 10!
@JordyValentine8 жыл бұрын
These videos are very concise and well made, it's just a shame that it's such basic information
@bradleymcgettigan27578 жыл бұрын
Can you move this series to the main channel so this knowledge is shared with more people
@masonpowers60038 жыл бұрын
If there is a leak post MAF pre turbo, even a small one, it is a leak. There's no "it's just a small one" non-sense. Granted, if you are tuned with said leak you may not have issues, especially on speed density. But if you have a MAF and plan on running the GFB Response, or whatever, you may run into hunting idle and or drivability issues under light load (going down a hill while applying light throttle or costing with light throttle input). Ran into this several times during my build with the exact BOV in the video and have since switched to a different manufacturers recirc with no issues.
@RamonHernandez-rj2lc5 ай бұрын
Looks like ill be installing my stock one to find my leak then. The TL RFL I'm using now keep leaking during my test.
@mjl64254 жыл бұрын
So basically don’t do a Boost leak test from the intake pipe, do it directly from the turbo inlet?
@elitecol698 жыл бұрын
Is this video about back paddling for those who tested their GFB bov's and found them to leak?? It really looks like that..
@The_JDM_Dynasty8 жыл бұрын
Awesome very useful video, thanks very much!
@chrismartinez57688 жыл бұрын
Do these leak under vacuum though? or only when you put pressure on it?
@TomsChevelle8 жыл бұрын
Excellent! I learned something today!
@vincentlevesque308 жыл бұрын
A dual port BOV will then create a vacuum leak if the air can be sucked througt the atmosphere port?
@SamFarley0988 жыл бұрын
Adam LZ needs to watch this video!
@OverdriveMediaNZ8 жыл бұрын
His wasn't the actual BOV leaking, but the flange that attached the BOV to the charge pipe coming off the turbo outlet
@SamFarley0988 жыл бұрын
Overdrive Media Oh right
@VNN-ks3nj Жыл бұрын
So that means that the vacuum going to leak as well right?
@ext4568 жыл бұрын
I hate myself for watching this. lol! keep them coming.
@Zcypot8 жыл бұрын
I had my cobb xle BPV leak, got it replaced and all fixed now.
@zakkiller2236 жыл бұрын
that means that the recirc is pulling vacuum through the trumpet no ? causing a vacuum leak
@pigeonsil240sx Жыл бұрын
but doesnt the engine vacuum allow unmetered air to get sucked from the recirculation side through the bov and suck air from the atmospheric side,this being said wouldnt we see lean mix at idle but not a wot since idle draws the most vacuum and wot pretty much equalizes vacuum? also could i apply a little bit of thick grease to help seal this more?
@benupde19798 жыл бұрын
That's why when I leak test I go from the turbo outlet connection to the throttle body. There is no reason to pressurize a turbo or engine like that, but plenty of reasons why you should not.
@masonpowers60038 жыл бұрын
It's not the pressure side you need to worry about, I mean if there's a boost leak then yah is an issue but if it seals then you need to pay attention to the the vac side, if there's a leak post MAF/pre turbo you will have a vac leak. Even if it's a small leak, a vac leak is a vac leak, and small post MAF vac leaks lead to issues aka: "lean conditions"
@ianwilde47048 жыл бұрын
so can we clean our turbos? especially us diesel drivers. Should we even try to clean them? is there any point? cheers GFB.
@Dutch_Pancake8 жыл бұрын
It's not (yet) in the "GO FAST BRETT" playlist. :P
@CalSticks8 жыл бұрын
Thanks for these
@turbocharged95897 жыл бұрын
Does that mean it's safe to slightly sand away some pitting inside the wall of the bov that the piston travels through?
@mjl64254 жыл бұрын
What about when it leaks at the mounting flange where the gasket is? Mine is mounted on the intercooler piping with 2 bolts right before the throttle body and soapy water revealed a leak. Is that still considered a Boost leak or no? Im on recirc w stock bpv.
@TheFirebolt359 ай бұрын
this is quality
@Prodriver338 жыл бұрын
TURBO TROUBLE: so I have a volvo with the T5, it boosts well most of the time but lately it has been feeling sluggish sometimes, it will get all grumbly and feel like it's chugging along till 5k or so them starts boosting properly, any ideas??
@kimboslicefan784 жыл бұрын
i think my bov is stuck partially open... i hear air hissing from it when boost is building. occasionally with the ac on full blast it'll close and the car will reach max boost. but normally the blow off valve doesn't pop up normally and air is hissing. Is my bov defective or just needs cleaning?
@mturner2213 жыл бұрын
Did you figure this out? My splitter valve is making the sound noise and wondering if i need to adjust spring pressure or if its broken
@SpeedPhantom18 жыл бұрын
Rumour has it when you comment early enough you get a free MCM Lanyard, pretty please?
@JobeMinacum8 жыл бұрын
Would it be possible to use a piston-ring type seal inside of the Blow Off Valve to get rid of that .02mm gap?
@Jack-le7vk8 жыл бұрын
It wouldn't as you would still bypass it going between the two outlets of the BOV. That would only help with leak down from the top to the bottom of the BOV
@danway608 жыл бұрын
Piston rings actually have gaps in them.All the rings on a piston are rotated away from each other to help with leakage, but it is not a perfect seal however. Nice idea though. .02 is nothing though. I machine parts to that kind of tolerance every day and when you press a shaft into a blind hole with that clearance, you can push the shaft down and it will spring back up to the same place because the amount of air displaced is minuscule.
@JobeMinacum8 жыл бұрын
Daniel Way Thank you for the technical breakdown, I appreciate that! I'm trying to learn more about engineering, and your comment really explained why my idea wouldn't work. Thanks again man, it's appreciated!
@davejames20153 жыл бұрын
I need a less tight spring on mine it doesn't open under vacuum at idle
@StrictFocus8 жыл бұрын
"How many videos can we make on blow off valves and wastegates?!"
@GR8GUY547 жыл бұрын
What about the Boomba BPV?
@Elmer_R3 жыл бұрын
How would i test a greddy FV?
@chebly10008 жыл бұрын
I've got a vauxhall corsa vxr 1.6t .. just wondering what the best blow off valve to use ..or just stick to stock wastegate?? I have no idea ..help me plz
@robivlahov8 жыл бұрын
wastgate and blowoff do not do the same thing. blow off, removes the excess pressure from the intake side so it dosnt surge, a west gate gets rid of exhaus gasses, so it dosen't overspin the turbo you can get a bov for the sound,but if your car has a maf and is tuned for a recirculatory valve, it will not work right, you will be having a/f mixture problems, and will need to get it maped for a bov. so make sure of what you are dealing with before "upgrading" your curent setup, because the upgrade can be more than 1 part
@chebly10008 жыл бұрын
Robi Flego thx man .. a friend said the same thing the other day .. thinking it sounds fine the way it is for now :)
@robivlahov8 жыл бұрын
+chebly no problem mate. you got a sweet little car :P your first car?
@chebly10008 жыл бұрын
3rd... the first 2 car are nothing to shout about :) .. this is my first toy
@OCMElPolo8 жыл бұрын
my wife likes your purple spray bottle... where did you get it? (the bottle, not...)
@garretangle59988 жыл бұрын
could you use a onboard air tank/compressor to turbo your car effectively ?
@scootbmx018 жыл бұрын
possibly but a car could empty any decent size air compressor tank in less then a feasible time on a reasonable amount of boost.
@garretangle59988 жыл бұрын
+scootbmx01 but u could have a air compressor keep constant pressure in the tank even if it's only 20 to 30 psi
@scootbmx018 жыл бұрын
+garret angle, you would need such a big air compressor it would be way too big
@garretangle59988 жыл бұрын
you could just mainline it from the compressor in the trunk and not even have a tank
@garretangle59988 жыл бұрын
scootbmx01 you could just mainline it from the compressor in the trunk and not even have a tank
@harrisonbaker84818 жыл бұрын
cool
@ethansmith4665 жыл бұрын
From my understanding you’re supposed to leak test the turbo
@jamesbadham38728 жыл бұрын
this was kind of irrelevant as you would never pressurise the outlet of a dump valve. if the leak was from the inlet side of the dv to the outlet, while the valve is still closed, then its a boost leak and therefore could be a problem. but a leak from 1 outlet of a dual port dv to another outlet isnt a problem is it?
@Tool0GT928 жыл бұрын
I need to get another turbo car...
@CrAzYDr1veR8 жыл бұрын
next time plug the recirculating part for the leak test :(
@001Andrew1008 жыл бұрын
can't have any leaks if you don't run a bov ;)
@niel808 жыл бұрын
and you will have a God level ssssstu tu tu tu!
@RisupFIN8 жыл бұрын
Only if this was actually true.. :D No bov=no boost leaks
@001Andrew1008 жыл бұрын
kinda is, no bov = no leaks coming from the bov like in the video
@robivlahov8 жыл бұрын
there wasnt a leak in this video...
@kweightthree8 жыл бұрын
On a dual port BOV can it draw un-metered air in? How big of an issue can that be for tuning?
@patw52pb18 жыл бұрын
Yes, it can if the BOV is malfunctioning, has a dirty seat/valve or has a damaged valve or valve seat. With a good BOV, no, the way the BOV valve piston seats with a positive seal it will not normally leak. It would also matter where the BOV was located in the charge air piping as to whether or not the un-metered air leak would effect proper operation.
@Cruz06045 жыл бұрын
Now add negative pressure and you’ll see it sucks air through there also which the mass air flow sensor doesn’t account of which makes the car run lean, this gfb valves ar good for the first few months and then they become trash, I just reinstalled the OEM recirculating valve on my Subaru because it was leaking vacuum and made the car run like shit Eve the ecu detected the problem,
@ThePunkabahkau Жыл бұрын
I think the same way.
@cristianmorales26078 жыл бұрын
hey guys
@ahhason6 жыл бұрын
Honestly, im gonna bash this video. I dont see the point in showing how there is clearance between the piston and the cylinder. And why are you showing this test when its irrelevant to actual performance? This guy is spraying soapy water into a leak that he created. I dont get it. Why show me that? These BPVs when operating, do not even operate in that manner in which he applied that test so its irrelevant testing. Is that what you are trying to point out? That people shouldn't be testing BPVs like this?? Please explain. Am i missing something?
@sambosomethin78446 жыл бұрын
Yes, you're definitely missing something.
@gimmedatcookie488 жыл бұрын
#strongchinbrett
@snoopunit8 жыл бұрын
am i the only one that can't see the actual video? it's just a black screen
@snoopunit8 жыл бұрын
nvm, it's on my end
@tbas874110 ай бұрын
I recently found out that most Tuners or so called Tuners in the USA wont even allow GFB valves as they think they all leak badly. as they bench test them with only pressure on 1 side and think its broken. (hence why i said so called "tuners" as they can't be very good at their job if they dont know how a GFB BOV works.)
@herpderp16626 жыл бұрын
Unrelated to vid. But recently the BPV hose ripped off of my BPV, this caused something I can only describe as compressor surge or turbo flutter. My guess is because it couldnt ventthe pressure so it just wentback into the turbo. Its fixed now, but big question is..... what COULD be damaged by this event? And how can I tell? How would I even know if anything internal like seals or o rings or what the fuck ever are damaged by fords shitty workmanship?
@mspeed358 жыл бұрын
#2
@drlx1478 жыл бұрын
I Didn't understand
@jonathanadams7508 жыл бұрын
me either. that's why I like na
@schwags19698 жыл бұрын
Blow off valve vents boost pressure when the throttle plate is closed, that is where it shines. Under full throttle the engine can take the boost, and very minor blow off valve leaks are really of no concern. That was my take on it.
@scootbmx018 жыл бұрын
so you like going slow? :p
@schwags19698 жыл бұрын
No, just what I understood from the video.
@greathey12342 жыл бұрын
Really terrible camera work. For fs, let's stay focused on what he has to say rather than his hands
@KidInWhiteKlouds8 жыл бұрын
1st
@BeaudoinMotorsports8 жыл бұрын
boooooooooooooooooost
@skully45218 жыл бұрын
Why is this the third video on blow off valves I'm sure he knows more than this about cars wtf how boring
@dylanknight47528 жыл бұрын
the main point i got was...theres a lotta people that think they know everything and try to sound smart when talking about boost leaks....but then brett comes in and says yall are stupid. lol