Super Charged Barbie Jeep Makes 15 PSI

The first 1000 people to use the link will get a free trial of Skillshare Premium Membership: skl.sh/grindha... This week we finally got the supercharged CRF 450 running right! We used a VW buss carb and that did the trick! Now the off road Barbie Jeep runs at 15 PSI no problem! This is the first time we successfully boosted an off road build! What should we build next?
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[@dannycoultas265]

Never imagined myself been jealous of a pink child’s toy, this thing is nuts who don’t love boost

[@htweelz]

Same here! Never wanted a Barbie Jeep more than right now!

[@davidhelt6426]

City boys city boys hate boost and I hate the city boys

[@TheBCninja]

Can we get a lap board?! It would be really cool to see tangible results after you modify each vehicle. You get to feel the change, we only get to see and hear it! Super rad guys, thanks for the content.

[@socks2441]

they say they are getting a dyno soon too, so that will be awesome for that.

[@عبداللهنمر-ج4غ]

ط2

[@LemondzzPvP]

Can we appreciate all the camera work that goes into these episodes???

[@thedancingpickle6362]

It must be stressful trying to get the right shot again again and again

[@davidlambert4281]

Ya

[@mre741]

No I like the older episodes where they showed more and it was less movie oriented.. you didn't get a whole build at one time but I felt you were more involved and learned more

[@samuelberghuvud5527]

Yes we can

[@kendesign3622]

A stand alone wideband sensor setup is something you guys could definitely use.

[@bearrett50kal17]

Precisely my thought when he said it needs carb tuning, knowing AFR is gonna help tuning

[@samuelcorbett9403]

You need to Dyno it cause I think everyone wants to see them figures

[@thebusbums2825]

@@mikejohnson601 'them there' figures

[@esigman1]

@@thebusbums2825 all them there figures

[@reecehignett95]

Did anyone see the green fluid on the floor on the snow when he said the radiator was boiling?

[@Avetho]

Yes, green snow is cause for worry

[@tterryshenanigans1820]

Overflow doc otherwise you'd blow your hoses off

[@thomaskrawchuk4940]

ya i saw that

[@gabeconstanza15]

Yeah thats the coolant

[@isaacpugno3388]

@@Avetho but it’s just coolant?

[@ghreasyhillbillygarage]

12:50 underneath the radiator there is a ton of coolant ya might wanna have a look at that

[@KalLanPIDT]

They know, they said they could hear the coolant boiling, and if its boiling its gonna dump the pressure and with it some coolant.

[@davenmcclellan7563]

99% sure it's just overflow. Without coolant overflow the pressure created by it boiling would blow all the hoses

[@KalLanPIDT]

@@davenmcclellan7563 That's the word I was looking for :)

[@ghreasyhillbillygarage]

@@davenmcclellan7563 @Godly Powers yes I know I realized that after I commented

[@legros731]

Really hope not for them but it look like blow head gasket /lifting the head with all the ripping Ethan did with no tuning on the stock ignition map and these engine are high compression ratio not a good idea

[@jamesfrost5261]

Love it, bet its a little lean not having the vacuum from a 1500cc engine, sure it needs bigger jets to compensate. You guys do great work., and do it with almost nothing. Just the way I have to. Glad I found this channel a long time ago.

[@RyanMcIntyre]

Both engines are close to the same horsepower, meaning they're liberating the same amount of energy from the same amount of fuel, if anything the VW requires more fuel than the 450 due to a much less efficient engine design.

[@jasonGreenVw]

@@RyanMcIntyre stock it may be the same horsepower but with the supercharger I would enlarge the jets so it doesn't run lean and burn up

[@JPEight]

They’re running it in draw through mode, so the carb will see a vacuum created by the supercharger.

[@brandonhewitt2386]

I thought it was leaning out at high rpm. That may be why it was overheating & why the header was red hot.

[@RyanMcIntyre]

I have no doubt the mix is wildly off, but I was just saying it's not because of why you think it's off.

[@julanrisselada5228]

2030: we built a v8 barbie car

[@arztbiscuit1433]

Pry 2022

[@wouldyouglowme4235]

Sheesh

[@tymelock]

LoL

[@duncanb1981]

We Nos'd our v8 barbie car.

[@skookumbuilds3282]

No that will be 2022 this year diesel barbie

[@unacceptablefringeminority9438]

13:40 Evidence that Sendies new upgrade scared the piss outa herself... (Might wanna make sure the dog doesn't eat the snow later.)

[@Slimboid]

TBH I'm surprised their dog's still going with all that metal flying around 😆

[@quintinhill8491]

You guys specialize in death traps and I love it

[@christianfritz6333]

My favorite part of Sendy is the kick start, that always gives me a giggle.

[@MrClaypogue]

Sounds to be breaking up at the top end, I could be wrong but, I believe when you boost your supposed to change plug/plug gap as well or just a hotter ignition system entirely

[@scootypuffjr.]

Tighter gap at least

[@Fix_It_Again_Tony]

Reducing the gap can help the stock ignition system if it is having trouble firing from insufficient spark energy. A colder plug can be used to help reduce pre-ignition if it is a problem. I think when you are referring to a "hotter" ignition system you are talking about an increase in spark energy. Usually in forced induction high temperatures are the enemy which is why the mixture is richer and the spark plug temperature range is decreased. I have my doubts about the longevity of this engine at 15 psi, but hopefully they will prove me wrong.

[@deanhallam1440]

I think it was misfiring at the top end because the rev limiter kicked in, but I'm not sure.

[@garethmilne6887]

@@deanhallam1440 Yep

[@Gattone_91]

That exhaust pipe really needs some heat wrapping, at least in the part over the plastic hood.

[@milkreviews6146]

your next build should have a rotary engine. That would be sick

[@decisnrgmail]

I’d say same with the rotary engine but they just cost to much for the types of budget builds these guys do.

[@kcjdelanoit]

Na rotary would be gnarly, honestly can’t wait for the 2jz mower

[@carsongwin1816]

@@decisnrgmail do you know how much this stuff cost to build? It’s not like it would cost a crazy percentage more to build a rotary, and if it gets views it’s worth it.

[@wouldyouglowme4235]

Those are kinda pricy for pretty much no reason

[@socks2441]

yeah. no idea why they are doing electric builds. im a petrol head, i thought they were too. i wanna see more 2 strokes and rotarys. anything that REVS.

[@marielarebelo9194]

Grind Hard's to do list: - build something ridiculous - add snow tracks on everything - supercharge everything - send it too hard - break everything - repeat

[@RyanGribble]

Add bring all that stuff to the 2021 Gambler 500 ;)

[@wrenchandrip]

ethan’s hair matches his mad metal scientist nature

[@GrindHardPlumbingCo]

It's out of control at this point

[@kylehaley5433]

@@GrindHardPlumbingCo 9:50 would look sick on a t-shirt. A Gorillaz style cartoon character comes to mind the second he jumps in it. Emphasis on the hair.

[@aeroboozt9455]

@@GrindHardPlumbingCo I am so jealous of your beard 🤣

[@cannabisvice5756]

I would also like an ATV to have a car like this but my parents don't have the money to buy me one ... I'm from Romania ... good health to you

[@aaronrobey9354]

That's the fastest a single VW carb has ever been

[@costdelta7302]

Yes.

[@jeremyhanna3852]

Aint that the truth

[@aerooo3466]

Nahhh, remember AZN the guy that hangs out with farm truck guy, his bug was stooopid fast

[@cameroncondra724]

@@aerooo3466I don’t think that bug had a vw carb anymore lol

[@adamr9215]

You have added boost, but have you pulled timing and gone to higher octane fuel? Both are needed to get it performing right.

[@JPEight]

Only needed if the engine is knock limited, which not all are, even with forced injection. That being said, at 15psi on an NA motor you're probably right.

[@adamr9215]

@@JPEight Lol, those are high compression engines, it’s going to be needed. They also have a rep of not knocking noticeably even though damage is being done.

[@legros731]

@@JPEight wrong this engine run way too much timing with the stock ecu to run 15 psi with a unknown afr This is why you see coolant on the ground at the end they lifted the head or blow head gasket = pressurize the cooling system and spill it out the overflow

[@JPEight]

@@legros731 What’s wrong with what I said? I agreed with OP. ECU? Isn’t this a carb and dizzy set up? Coolant could be just from getting too hot - bad a/f and nearly double the power will do that to an engine. Head gasket isn’t always the reason. Coolant puddle is not under the engine.

[@kshepthedrummer]

@@JPEight I think by "ecu" he meant "cdi" these have an ignition control box

[@dylanspencer3662]

When Sendy runs like the Colonel it’s a good day

[@LaidBackLiving]

Billet! That thing rips. Sounds good too. Good work boys

[@danf4616]

What a little ripper that is! 👍

[@hudsonterpstra7659]

As Ethan starts making more power, his hair gains more length, (or maybe it's his Albert Einstein hair)

[@youstank7777]

That’s his winter coat 😂😂

[@logncarter8471]

Mad Scientist Hair

[@nybergsgarage]

He's growing his hair longer so that when he finishes his flux capacitor he can say, "great scott!"

[@canin7874]

Definitely need an air fuel reading to accurately tune the engine for boost

[@TheRedMenaceR]

The most mad scientist thing EVER!!!! I LOVE IT!!!!

[@mot_0478]

You guys just made my evening (Im from germany, its 9 o‘clock here)

[@BenBlackEquinoxEngelhard]

G'night!

[@mot_0478]

@@BenBlackEquinoxEngelhard thanks 😊

[@kilianmuenscher5616]

Haha für mich wars such grade die gute nacht geschichte

[@nybergsgarage]

It's only 3:00 here in north dakota.

[@harold1700123]

Same here brother!

[@TrulyUnfortunate]

Holy Shit!!! Thats more psi than I got out of the TRD SC on my Tacoma!!!

[@TrulyUnfortunate]

It's Forken Double!!!!

[@cheapsledchallenge9048]

The reason it's dying when you whack the throttle is the accelerator pump shot needs to be bigger which is either a nozzle diameter change or cam change. If this type of carb uses a powerjet, block the vacuum port in the base and run a boost reference line from the charge side of the Supercharger to the power valve chamber. A piece of brake line drilled and epoxied into the PV chamber works.

[@Sel10heit]

Yep, same way you would reference a blower carb on a big block

[@kcjdelanoit]

Lmao the engine just keeps getting taller, starting to look like the freedom machine leroy

[@ridingwithlucas1745]

They should do something like that on the colonel twin turbo

[@TrulyUnfortunate]

It's not running to lean? It sounds like it's breaking up a bit...but who Gives a Fuck if you're getting 15 psi of boost!!!! Ami Right!!!?

[@carbonconnection2480]

Fuckin A!

[@largejoseph7914]

As long as it’s not lean on the top end i reckon it will be fine

[@TrulyUnfortunate]

@@largejoseph7914 Thats where It'd get lean. The more air you jam in it the more fuel you need. It will also make the engine run hotter as we saw with the melting Barbie hood and the glowing exhaust. When I went with the smaller pulley on my TRD blower I had to upgrade my injectors because they couldnt put out enough fuel. This lead to repeated blown head gaskets unfortunately. You could always tell when you blew yet another head gasket,you'd all of a sudden get a short term increase of HP......water just doesnt like to be compressed for some reason.

[@TrulyUnfortunate]

@@mostlymotorized And it gets worse at higher rpm's.

[@GRPABT1]

Roots blowers tend to drop boost higher up

[@HarZoiD]

Hell yeah! I knew this day would come!

[@oldmanbluntz]

Fuel issue could also be from fuel slopping around the tank.

[@0nsty510]

I love it how they aren't worried about blowing it up. They just redline it the whole way through.

[@LowState]

Someone needs to make a gif of 7:05. “BRAADADADA BRAADADADA!” 😂

[@Eli-tg5xz]

I will

[@rorygills8329]

The stumbling from low throttle could be to do with throttle enrichment. Not sure if this carb has a pump jet.

[@thatdudeinorange2297]

-Hello my name is Ethan and I would like to purchase a lifeinsurance Other end: 'click' hangs up..

[@nybergsgarage]

That's funny because I have a friend named ethan who has done more dangerously fast things on four wheelers, motorcycles, and snowmobiles than I have room to type.

[@kiesh.]

Pilot jet too small? If it was fuel starvation you'd expect it to suffer at high revs

[@mickiemaccamoo]

This is what I was thinking too.

[@Ryzmuhh]

just started watching these guys and I’m scrolling thru some older stuff and the camera man is by farrrrr the most beautiful soul to ever walk this earth

[@Nevertrustalawyer]

Seems like a fueling issue to me. Removing the pressure regulator would be a good start! She’s a beast!

[@theblueguyfromimblue9950]

Finally let’s goooo!I love the work guys!

[@jacobbender5449]

Are we going to ignore all the coolant that sends leaked everywhere

[@cold02rex]

It's cool.

[@TheBCninja]

It could be from the overflow, just getting a bit hot and spicy :^)

[@LaidBackLiving]

She’ll ride

[@southtexasspecials175]

Its amazing remembering the Barbie jeeps first run till now n all the builds between. You guys are inspiring

[@WoodysPerformance101]

Looks awesome like always!

[@jakedevries1455]

That thing rev's absolutely insane! Impressive 😁 And the snow coming off the tyres when he rips it on the test drive.

[@jacobspringer2918]

Needs bigger jets. Yall need to read the spark plug.

[@joeswelding8193]

One of those that could build anything my biggest problem with other channels they are less detailed in the welding and fabrication and this channel is the best fabrication ive seen very solid u should be the greatest builder on KZbin period

[@honestjason7854]

my favorite part is how the back tires are just instantly clean

[@definitelynotpewdiepie]

I've been waiting for a new video on the supercharger project for so long. You guys definitely delivered!! That jeep gets more and more badass every time you touch it!

[@ridingwithlucas1745]

The colonel might need a supercharger now lol 😂

[@Tampaboys]

Man that thing freakin just ripping great work guys

[@CloudHindlen]

Just when you think that jeep was never gonna get cooler. GrindHardCrew uploads a new video. 😂

[@MK-bs2ol]

Most Super charged or turbo charged engines will run a tighter plug gap to avoid break up at high rpm you may want to try that.

[@robertjones9606]

"Amish Billet" Machine parts!

[@donellmuniz590]

Naw, their lathe would be be made of wood, with a foot pedal. Like a wool spinning wheel.

[@dirtbiker5182]

I am so happy you guys picked this project back up. I really wanted this to be successful, and it's getting there!

[@fletchermargeson6884]

One word “yes”

[@json8172]

@grindhardplumbing look at Judson vw supercharger tuning info! they made superchargers for old vws in the 50s.

[@brentwagner4628]

Do you guys plan on lowering the compression for some reliability?

[@KalLanPIDT]

If it isn't knocking, the higher compression they can run with the better. Another option would be going E85 so you could crank the boost but the machine was stupid fast even before it was supercharged.

[@brentwagner4628]

@@KalLanPIDT good point, with my experience lower compression engines topically last longer because the bottom end doesn’t take as much stress

[@KalLanPIDT]

@@brentwagner4628 Ofcourse but have you seen these guys? They beat the shit out of their toys. I don't think they care about reliability when they are boosting an engine that's not designed to take it. They will let that engine scream freedom 'til it breaks then they will rebuild it even more overkill :D

[@scottyd2262]

Great fabrication skills on that inlet flange ! I'm loving that blown CRF450.... WOW !!

[@davidlambert4281]

Make a website and make specialized or ordered power wheels and sell them. and I subbed

[@michaelmarshall8041]

Gopowersports already does this.

[@BlakeEM]

The WOT issue may be related to the accelerator pump not being adjusted properly. Since slide on the CV carb opens on vacuum it makes sense that the supercharger sucking in more air would cause it to be stuck open. The CV carb probably would have worked fine with a stronger spring, assuming the boost didn't suck out the diaphragm.

[@gking1022]

I’m just waiting to see them add nitros to it 😂😂😂

[@irishpaulinegomez9948]

Been waiting for this upgrade for months, and totally worth the wait. Good job. 👌

[@xruninslick]

Milling machines are overrated lol, and the electric projects are gonna be awesome.

[@davidd3377]

I keep coming back to watch this over and over. That’s the coolest most badass thing. I am loving how much power it has. I would have to be riding that in all the local parades. Great video

[@mathijs-zu9oj]

Sickkkkk I am sooooooo jealous i wich I could do what ur guys do geep up the vids that are greattt 👍👍👍👍👍👍👍

[@theodorgiosan2570]

That's the same way I make my "billet" carburetor adapters for various old cars, except I use an angle grinder to cut the main body of the adapter, and a dremel if I need something like a round hole that blends into an oval. An example would be my adapters for large one barrel carburetors on early Subaru intake manifolds, the carburetor side needs to be round, and the intake side is a kind of irregular oval. Pretty amazing what can be machined with the most basic power tools if given enough time.

[@desmondmoonbear8149]

Put an engine similar to Sendy's in a dirt bike frame

[@saunchonass9231]

It is a dirtbike motor just with a supercharger

[@desmondmoonbear8149]

@@saunchonass9231 yeah I know but it would be cool to do that to a dirt bike

[@rudyross5394]

I seen the green fluid on the ground as well

[@deanhallam1440]

RIP Sendy's hood. Looks like she needs a wrap job on her exhaust.

[@isthatasupra9569]

But then it would be safer

[@philipxj18]

If you are welding on aluminum and having a hard time with arc wander use a smaller cup size. I usually run a 3/32 green or pink tungsten from weldporn and a #4 stubby gas lense kit. If it's a bigger part I'll use a #5.

[@kollinknack9288]

Be careful, don’t hold it at redline very long. I learned how to rebuild a top end because I floated a valve... and I don’t think you guys wanna rebuild sendys engine 😂😂😂

[@legros731]

75% chance it need a head gasket now with all the coolant on the ground at the end LOL

[@devenbs1993]

Ethan has rebuilt this engine a few times if I remember correctly. He's had it for years, it's from his old dirt bike

[@johnydeep1094]

Much power right now! Great job guys!

[@CarLoverPhotography]

Someone with a milling machine sponsor these guys

[@frederickmcknight2123]

You guys make the most amazing toy's. Watching the builds is what I like to watch the most, test runs are a close 2nd. Thanks for doing what you do. So fun to watch

[@dog4579]

Ayo there's 2 jz lawnmower in the vid

[@CLCIII]

It totally amazes me what you fabricate with basic tools. With a milling machine or CNC machine I would love to see the results of your genius mind. As Always, May God Bless you and yours!

[@zegi1454]

me: ower-powered? ghpc: naah dude

[@KalLanPIDT]

As if it wasn't stupid fast even before the supercharger xD

[@geoffburrill9850]

Great job. Simple but pleasing ally adapter. Nice one.

[@thisguy1890]

I've never said this before but umm.. That think is too damn fast.

[@CLCIII]

Barbie is a Unit now. Super Barbie! What a Beast you have created. Looking forward to the tuned version. Some paddle tires one the dunes would be really cool now!

[@ogt92fromthe1step9]

The best part is watching you kickstart a pink Barbie's Jeep 👌💪😁

[@turbolq4]

Basic turbo/supercharger theory says that for every atmosphere of pressure (14.7psi @ sea level) you add, the power output will double. That means this thing is in the 100 horsepower range from a 450cc single which is complete lunacy. It's rad!

[@cayminlast]

Excellent job on the adapter for the carb. You have to tell us how many bowls of skill you have for breakfast each morning. Love your builds and videos.

[@Miekkajakunnia]

I agree with removing the fuel regulator .. that makes that help with the flow issue

[@madjeepernh6834]

Awesome work guys!!!! I love the off the wall builds you do! keep "em coming!!

[@SupremeOverkill]

Good idea putting your safety glasses on your hat while using the lathe. Protect the merch. LMAO

[@Tampaboys]

Congrats on the million followers guys super awesome

[@ridgemackey9313]

Just imagine what you guys will have built by your 60s constantly just breaking the internet mad respect. fr amazing work

[@robertmartin6615]

That's awesome. The only charged 450 I have ever seen

[@tgsubie]

The fact that this things motor is stock and dealing with as much boost as my tuned audi is ASTONISHING. I would kill to see dyno results vs stock numbers. You guys are absolute legends.

[@skrewylewy3259]

if the fuel pump is based off the idle of the motor and your having issues its the pump get a small stand alone one

[@ericksegovia4662]

Grind Hard, Love the go-cart builds, everything you do and redo and redo is awesome. I come home from work and de-stress with a video from Grind Hard..... Keep on being creative both in the builds and video style.

[@TheBCninja]

15psi is... more than double the horsepower. So sick!

[@ryanott14]

11:40-:43 "it does still have a little bit of hesi-hesitation" 🤣 bro, you're becoming part machine!

[@thatgraysuburban]

*BADADADADADDDDDADDD BRAAAP* Sendy is sending it harder than ever before

[@betoborba3329]

It’s tuning related mostly your nettle your main jet seems really close sense it does rev good on 3/4 up Throtlle! your nettle takes care of 1/4 to 3/4 of your acceleration and 1/4 and idle is your pilot jet and mix screw! Me personally I would drop the nettle down one clip if it gets better you are going in a good direction if not go up but giving elevation I would go down! It could also be your plug gap and timing sense you are boosting now!

[@vancemacd6315]

Very cool fitting ang getting the v w carb to work with super charger. Mind blowing actually.

[@goneglord420]

Now you guys need to throw the tracks back on it and blast it! Love it and yes jealous of a pink barbie jeep powerwheels. Lol

[@saltytablesalt2821]

Doughnut recommended this channel and I don’t regret giveing it a watch love it

[@napeness]

Awesome build it looks like a blast to rip around on