Wastegate Preload Setting

[@Komodo_Chan]

Easy, straightforward, no bs. Good stuff. Thank you.

[@Corgikids]

After buying a Forge Actuator I was unsure how to adjust preload. this video was easy to follow and made the job effortless. Thanks.

[@ernieharrison1449]

I'm on my second turbo charged car, a Fiat 500 turbo and I've installed the Forged system and boy oh boy am I glad I found your video 😀. Great video, professional and helpful!

[@cameronjansz88]

FINALLY an easy quick video that gets to the point

[@dinhvanpham8102]

Properly preload setting is essential for all turbos. By adjusting the actuator to find the crank pressure point. The best tool to find the Crank pressure point is to connect a hand pump vacuum/pressure like a Mityvac mv8255 to the wastegate. Adjust the actuator. Pump until the rode start to move. The pump will show the pressure in PSI or bar. For most turbo 7-8psi or 0,8bar is okay. In combination with a Bi directional scan tool f.i. Autophix Es910 for BMW and Mini or Forscan for Ford you will manage to adjust the turbo properly. Good luck.

[@vikenk]

For the most part yes, but adjusting this is mostly for proper preload setting as described in the video. You don't want to have it set too loose otherwise you may not maintain proper boost as the wastegate flap can bleed off too much exhaust pressure. Tightening the preload even further can increase boost but that's dependent on the wastegate itself and the vehicles ECU and it's ability to regulate boost values.

[@garydaniels1420]

All the young dudes like it how you said....

[@romanflores5505]

Fantastic video. Going to see if i can adjust my preload on my t25 like this.

[@eugenecardoza625]

very helpful video.. I'll be doing this tomorrow afternoon

[@biggypsy75]

cheers mate! never heard of preload adjustment in my life,my pal has a scooby with a rebuilt turbo and it was constantly overboosting with plenty off head scratching,it is now fixed due to ur wee vid thanks,and im now gona pull the turbo off my diesel shoppin cart and clean the egr valve and turbo and injectors as its running like a bag a sh*t when i put the recon turbo its had back on prior to my ownership,i will use this information,merry xmas!

[@vikenk]

Glad it helped you out!

[@vikenk]

Increasing the preload usually increases boost and reducing the preload can lower boost (to a certain extent). Keep in mind not all turbos allow adjustment in this location.

[@Ajid2872]

How about turbo kp39 can or not adjust preload sir?

[@fonzario]

My question is don’t you also adjust voltage? I’m working on a 2013 Kia Optima . It calls for a voltage range between 3.9 to 4.1 volts at the actuator for proper boost. Never mind. The actuator on the Kia is electronic and this one seems to be a vacuum or spring type actuator.

[@vikenk]

@@fonzario correct this adjustment isn’t for electronic actuators, simply manual ones only.

[@fonzario]

@@vikenk. Cool. Thanks.

[@vikenk]

The base psi is dependent on the wastegate actuator spring, it can vary greatly. The universal preload is ~3 turns or about 3mm. However this can vary if you want to try increasing or decreasing your boost on your own setup. Usually a small increase can be made by increasing your preload. I suggest trying it if your system allows adjustment and see what works for you.

[@luiscarlosrojasmeneghel3675]

3 turns or 3mm its for 8psi? , How turns its for 8psi or 0.6bar?

[@paulhutton2720]

Thanks you James woods

[@budgetendurogroup9635]

James woods knows his stuff

[@vikenk]

That depends on if it's adjustable, most vehicles do not offer adjustment on a stock turbo setup. This video is on an aftermarket turbo kit.

[@luckyhands4995]

This is no longer true

[@vikenk]

Usually the door will slowly open until the desired boost pressure is maintained. This question is hard to answer because it amount the door/valve opens is dependent on many variables. Usually if your testing it on a bench with a pressure gauge it will not open 100% at the set boost pressure, it's usually partially open.

[@vikenk]

Yes up to a certain point. For instance I have tried 2 turns all the way up to 6 turns of preload. After a certain point of increasing preload you may not see a change in boost pressure as the spring is controlling that. Best thing is to simply set it at 3 turns to start and try adjusting it later to see if there is any change. So yes the cracking pressure can be increased, resulting in quicker boost ramping.

[@cesarjorgemurillobarientos1813]

Very good master

[@yenabo8358]

best explained video in all if youtube, you fucken legend thankyou!

[@vikenk]

@Draslay31 Not all cars come equipped with an adjustable wastegate actuator. Adjusting a stock turbo setup can be more difficult because the ECU can ultimetly control your boost as well as the actuator. If your setup is adjustable you can try adjusting it but your already running a lot of boost so I'm not sure it's worth it in your case.

[@vikenk]

If someone is changing or upgrading there wastegate it must be adjusted properly to operate accurately, this video shows the general adjustment required.

[@deltafire5058]

To the point. Thank you.

[@chasermcchaser1668]

how would you lower your boost and then how would you check that to be sure it function correctly?

[@vikenk]

This is not a turbo kit from a stock car. Aftermarket turbo kits or upgraded wastegate actuators can require adjustment when replacing them, they will need proper preload adjustment which is what this video is illustrating.

[@hollow121314]

@cuban571 Lets exhaust gases bypass the turbine wheel in order to limit boost to a certain psi.

[@kattalin]

All turbos come adjusted from the manufacturer. To adjust preload u need to apply the right amount of pressure (idle) to the actuator then adjust the arm until it does not fit to the right side and then turn it back until it fits so that the arm is touching on the inside right side of the arm that is for GM turbos, for Daimler it has to be on the left side, but even so tempering with the preload might damage your car so DON'T. The measurements are really precise. I work for Garrett :P i know

[@loganmcgrew4139]

That phones ringer sounds like the one on the office 😂

[@jamesreadhead8069]

Dunder Mifflin, this is Pam...

[@2slofouru]

This is the idea, but actuators can have different thread pitches, so the number of turns isn't going to be standard. I actually have a Steamspeed turbo that uses two different thread pitches on the actuator shaft center nut.

[@JuanRodriguez-di2je]

is this for all turbos or do they have different pre load specs?

[@logiahmed6430]

Is this for all turbos or they have different pre load specs

[@vikenk]

Depending on how stiff your wastegate spring pressure is it can be difficult to pull the arm out. Try using a small prybar/screwdriver to pull the arm out if you can't do it by hand, just be careful not to damage anything.

[@vikenk]

Usually if you have an adjustable actuator you (may) be able to increase your boost level slightly, but its' also dependent on your ecu program and how much adjustability it allows.

[@tarzan12052]

Thanx a ton. I will be applying this to a ko3 from my vw.

[@vikenk]

@oinkyerdoinkyerzwazz Increasing preload by threading the rod inward will increase boost slightly depending on the wastegate spring. On lower pressure wastegates the change is minimal but higher wastegates it can vary by a few psi or more.

[@t-clippersbarbers4585]

thank you.simple n clear video

[@HumbleBearcat]

I got a 2018 Q5 2.0T, the actuator rod has a small play on it and I do see that it has the thread & nut so I can adjust it. Unfortunately, the clip is on the backside making it more difficult for DIY. How many turns should I adjust from the "0" position?

[@jomiahbernard8483]

Thanks that was well explained, great video. I have an 05 toyota haice 2,5TD and the actuator on the turbo has just a straight rod with form of adjusting it. Any advice will be greatly appreciated. Thanks

[@Miniorpernik]

So, correct me if I am wrong but this is actually increasing boost as the actuator rod extends less, thus opening the realeas valves/vanes less which reduces the amount of "wasted" pressure!

[@ROAlexa1981]

+Krasimir Dragomirov you are right !

[@blagojmitevski6924]

yed

[@vikenk]

Mostly for any aftermarket turbo which uses an internal wastegate setup. However this can work on some stock cars which are equipped with a turbo from the factory as long as there is an adjustable portion on the wastegate.

[@vikenk]

You can't typically lower the boost pressure of an actuator by loosening the preload, you can typically only increase the pressure. In your situation you need to purchase an aftermarket wastegate actuator which already has a lower spring pressure.

[@DjVonCarmen]

Please take this video with a grain of salt. When I set my preload this way I was having loads of issues. The wastegate should be tight, not as loose as this video makes it. This is by no means a final setting for the turbo. Think of it as more of a "guideline"

[@vikenk]

It can increase your boost on some setups but for the most part it's simply a guide on how to setup your actuator.

[@xandysorvetes0874]

Di luvinha amiga , pra não estragar o esmalte é ?

[@lazzer408]

That's how to preload. Now show how to adjust the preload to specified wastegate opening pressure. You're only in the ballpark and not not to home plate yet.

[@hzmusallatt]

İs this setting the same for all turbos? My car citroen gas pedal electronic there is gap about 2-3mm late detection is it about actuator setting or gas pedal? Thank you for video

[@gautamdhiman6481]

Is this method applicable for all cars with this kind of adjustable setting

[@ramjamslam1]

i didnt know james woods was into turbos

[@xanavinismo2003]

Hahaha so true!

[@shujabeg7625]

sounds exactly like him

[@vikenk]

You will need to actually purchase a different actuator which uses a softer internal spring. However if your preload is set too high currently you may be able to lower the boost a little if you adjust your preload.

[@pipstarpipstar3852]

Very impressive...

[@finjonz]

Hi Vikenk Great Video thank you, I have a question. I'm upgrading a TD04HL 15t to a 19t, the 19t can pull around 500cfm. I'm looking at setting it up for 18-20 psi (to start with). I'm undecided what actuator to use 1.2 bar ( 16.2psi-20.6psi ) or 1.5 bar ( 20.6psi-25psi ) I am doing a full intercooler upgrade and air box, what would you recommend and also the 3 turn preload is that a standard setting on any wastegate/actuator setup?

[@georgeabraham7256]

Does that count for a used actuator as well.. as in it's still good.. does it need re adjustment. Mine comes off and on without any preload..

[@vikenk]

Yes this is also for a good used actuator as well. However not all actuators have the same preload settings but some preload is typically required. I’d research your application before adjusting it but you might benefit from an adjustment regardless.

[@rubixcube101]

If you want to decrease the wastegate pressure there is a good video to watch where you use a compressive spring to aid the wastegate opening.

[@mdorgham]

Nice and clear. Thanks.

[@ruitavares4261]

thanks.very nice

[@bobbydouglas16]

great video. what turbo was this on?

[@vikenk]

Garrett GT28R

[@pigeonsil240sx]

i just bought a new turbo and was messing with the wastegate actualor.the specs say its rated at 8psi but im seeing 17 psi,i would like to get 14-15psi how much psi is gained or lost per turn of actuator rod? do you think one turn counter clockwise will be around 15-14psi?

[@luiscarlosrojasmeneghel3675]

4 turns of 360° preload its 7psi? 0.5bar? How turns preload its for 0.5 bar? Or 7psi or 8psi comon?

[@saturnfan]

I have an internal wastegate that I'd like to lower the pressure is opens at. It does NOT have an adjustable arm. From what I understand, the spring in this w/g is set to open at 8psi. If I wanted say, 5psi, could I cut the arm, thread it so that I could adjust it an then adjust it that way? If possible, I guess instead of turning the arm the way you did in the vid, I'd go the other way? No traction in 1st and 2nd and was hoping for an easy fix. I have an mbc to ramp higher (10psi) in 3rd gear.

[@vikenk]

It may be possible but usually this won't help out actual turbo response to much but rather can help increase boost overall. First you need to check and see if your wastegate actuator rod is adjustable, most OEM systems are not.

[@rollthetape88]

cool vid man. I'm totally new to turbos, what does this mod do? does it open the waste gate later?

[@dannythebiker]

great vid im kinda dummy but i hope u can answer this noob question ... on and internal wastegate the psi is set to 8 how do i get it to come down to 6psi ..... thanks in advance Daniel

[@tamimetamime6365]

Is this way works in all wastegate because my turbo charger is of walksvagen golf4

[@zo6zr1joey52]

I have a Mazda speed 3 with a corksport upgrade turbo but there are 3 bolts which 1 do I turn????

[@StanislavTsonchev]

So let's say normally the actuator starts to open at 5psi. Therefore the more the preload the higher will be the cracking pressure...Am I right? I am planning on buying such an actuator for a project of mine (exhaust cut out) and I need a pressure adjustable one. Thanks

[@DjNagenMix]

Will this setting work in a 2006 Sprinter 3500. I just change the turbo resonator, but I still have the loosing power issue! My next step is to check or change the air hoses... Thanks!

[@6ixthstage845]

Thank you for this info.

[@jbradley920rox]

you rock

[@84stoney]

Are you gonna answer that phone?

[@KDD8]

BOOTY CALL

[@muhammadsalleh6972]

Later

[@loganmcgrew4139]

Sounds like the phone from the office 😂

[@abc796]

i got a question same as you

[@garydaniels1420]

Can you adjust this while attached to the engine like it will almost certainly be...

[@vikenk]

Most cars yes, some require the turbo to be removed for adjustment. Just depends on the car and setup.

[@7maszi7]

Good info thanks for sharing!

[@dinhvanpham8102]

On m BMW F11 525D Xdrive 2012. my actuator rode is a long plastic with a hull on the end. Is the adjustment to pull of the c-clips and turn the plastic rode clockwise to shorten the rode to increase boost? I have no boost at all. My diagnostic with my Autofix scanner tell the same error everytime 29A400 the flap is too far + deviation.

[@vikenk]

Not familiar with your car specifically but research it more online first. Your actuator may just be bad and require replacing.

[@dinhvanpham8102]

@@vikenk After some research: The crank pressure is not adjust properly within the operation range, between 1.4v-4.1v and the close range for the flapper is not adjust within the close range either. The hose between the pressure converter and the wastegate is cut up 2 cm and cause a big leakage. Now the hose is replaced with a 2cm longer hose. I do not have an scan tool to adjust the crank pressure yet. I think the best tool is a handpump Mityvac 8250. Is the standard pressure between 7-8 psi and 0,8 bar?

[@muirallie]

James Woods repairing a turbo.......

[@nickrenfert3933]

SO..on this turbo you turn it 3 turns of preoad. What does that equal in base psi, without a boost controller installed to alter for more psi. Is it recommended to use a inline boost altering device whether electronic or manual with preload set to specific psi.. Is it equal across the entire board of turbos that are out there. I have a factory volvo adj. tdo415g on my 89 Ford probe GT. .

[@aigeantech]

Hallo vikenk. I want to set a wastegate to ihi vl36 turbine. The pressure I want is 0,45 bar max(light turbo) At 0.45 bar must be completely open the door???or when the pressure should just gone 0.45 bar must begin to open??? Sorry for my bad english. Best regards.

[@drenegb]

This setting is used to preload any turbo my question is because I have in spirit R / T Turbo this setting so I can apply to my spirit

[@jakhorse9910]

Well done good boy

[@tedd7028]

Unless you have a Mini Cooper, Peugeot, BMW, or Citroen engine. Then it's vacuum based instead of pressure based actuator. How do we adjust those types?

[@73Datsun180B]

boost operates actuators on all wastegates

[@tamimetamime6365]

Is this it works also for wastegate of walksvagen golf4?. Thanks

[@jonathancorry688]

This vgt set up seems as though it uses the the opposite of vacuum to work or am I just really confused? This closes the veins as air is pushed into the actuator where as mine is the opposite? Am I wrong? If I am not how do you adjust the preloading on a vacuum type set up?

[@73Datsun180B]

boost operates actuators by pushing them open at set psi to prevent over-boosting!

[@MrShriepshroepshrap]

Hey you say on the end .this is how you probely adjust preload.can i do it with my turbo?i have a bmw e46 320 diesel from 2000 non common rail end the turbo wasegate is controlled not like in this video..it is atjustabble so i can do the same things that you do but the wasegate is controlled by a vacuumsolenoide with a electronic component controlled by the ecu!

[@boostercontrol100]

Great video! I need to adjust loosen mine to lower boost but its really hard to get to. The pin is in back of motor pointing down towards back of the exhaust. how many turns per psi? Im currently boosting to 25 or more with the controller set to 20. Thanks for any advise!

[@Barrenchats]

Answers phone.. Knock, Knock! who's there... Rod

[@Cappuccino-ph7rp]

What boost was achieved using this method?

[@vicky9343]

Hi vikenk if we adjust the preload too much will it cause more fuel consumption?

[@vikenk]

Not really, only increased boost pressure if your system will allow it. If you are making more power however it will be using more fuel at that time.

[@alve369]

vikenk Hi Vikenk,have a question..my OBD device shows Engine code error P0245-P0246-P0243 (Turbocharger Wastegate Solenoid A low/A High/A Malfunction Car is Mercedes C200 Kompressor2002 ,appreciate if you could explain it to me as i knw nothing about cars..Cheers

[@willielemosse3661]

how you do the preload in a ko3 turbo for mini cooper? mine is a lil bit different than the one you show in the video.

[@waifuracer6516]

Im planning ob building a budget fun turbo build on a 10.0:1 compression 1.3 pushrod. Now estimating on the internals it can take about 5.0PSI without a decompression plate so my question is, how can we accurately adjust the wastegate to know at what pressure is it opening? Is there an easy and accurate method to measure this without any fancy stuff?

[@73Datsun180B]

plumb up a boost gauge to manifold and mount gauge near other gauges on dash, adjust actuator and then go for a drive and see what you peak boost is and then adjust again if necessary!

[@arnoldbliss6238]

Thank YOU!

[@MrShriepshroepshrap]

end way must you have a preload wat is preload?why just not turn it over the valve?if you make it tighter than in this video..is that bad ?greetz

[@xXYannuschXx]

THANK YOU! I always wondered how you would be able to set the pressure on a car with non-electronic turbocharger control. :D A electronic boost control (the ones you can control while driving) are probably illegal as f.

[@dmarinos88]

For those running WRX's if you tighten too much above stock you will end upi running to much boost especially if you are already running a tune becasue your WGDC settings will be too high after you change this.

[@tomasmerida]

if i do that i gona low the psi or up the psi?

[@joshhiginbotham1238]

I have an 06 wrx and just got a new wastegate actuator. It's a 0.8 bar preset at 11lbs presure. How do I make this work? will doing this set it at that level or what? I'm kinda confused. I don't want to mess with it cause I'll probably blow it up or something.

[@aquaticasmr184]

Avid Shadow did it blow up ???

[@BigSiss]

Nice vid! I am running 20PSI on stock wrx09 turbo...would this mod do anything good for me or not? The last thing i want to do is hurt the car in ANY way, so i am basically looking around for more airflow = happy car :) I live in Co Springs so the elevation isn't helping our cars up here :) (6700ft) Any help would be appreciated guys! Thank you :)

[@ImpendingLee]

u sound like steve buscemi. cool

[@regdapimp06]

You sound like my buddy Jason.

[@nunosergiomoniz1]

Hi, to preload a turbo of a golf IV tdi 115hp with ajm motor? its the same like video?

[@sjm1991]

I am getting over boosting at 60/70 mile an hour it's like doing a skip n a jump

[@elhumildez3118]

U need to readjust ur turbo starting by zero man get ur actuator set up at zero

[@xr7cars519]

Woow

[@rinisugiarto844]

thanks Vinik, what if you make the arm another 5 turn short, would the turbo hold more boost/? or spring damage??

[@966246]

i could be very wrong, however i think if you over adjusted it like that the arm may not be able to cover enough distance to open the valve all the way causing high rpm turbo surge.

[@rinisugiarto844]

i see

[@vikenk]

Actually 5 turns will usually increase boost even more but that's dependent on the wastegate you have. If you have no other way to increase boost then you can try increasing the preload pressure a little further, I wouldn't recommend going too far though.

[@rinisugiarto844]

i tried, and it making shhhut loud noise, dnt know what it is?not closing waste gate or unable to open fully?no idea when i turn it back to stock and sounds goes away,but if i undo the screw(loose) waste will open i get o boost. What do you think??

[@vikenk]

Rini Sugiarto If you leave the arm loose then normally it wont make any boost or very light boost (which is not how it should be set). Your actuator may not be able to suport more boost because of the design or spring rate, not sure on your model vehicle as i don't even know what this is on, my video only shows general adjustment guides. I suggest leaving it at the proper adjustment.

[@412firefox4124]

I was wondering if you could help me, im putting a turbo froma a diesel inline 6 that created 20 psi, but im putting it on to a carborated v8 and only want around 6 psi. could i do that by extending the rod. or should i go to an external wastegate?

[@73Datsun180B]

That probably be too big of a down adjustment. You can get actuators with lighter spring to give you a lower psi base to go off (they usually have their range in the specs). The problem running external wastegates on turbo's built with internal wastegate, is you will need to have the internal wastegate welded shut so the external wastegate can function properly! LOL just realise your comment is 12 years old, but maybe I still help someone in the future😊

[@ROAlexa1981]

Is this a good preload four vnt turbo s ?

[@wrotedog]

well done