I chose the 11 blade to get great low end spool up and holds peak boost through the rpm range

abec777hondatec ....... so this guy in the video is wrong ? more blades mean better in quicker spool and more air at higher PSI ?

I'm acutely wrong more blades mean less air but a quicker spook down low

Which is better for building boost at lower RPMs for those of us who get bogged going uphill unless we're driving fast

TheMortgageDoctor definitely want to know your feedback

any updates?

Nothing in 4 years after this post

I bet it’s a lot laggier huh. I stepped back down to a 60 from a 62 for that reason. But I learned the biggest thing with spool is ur blade number. If its a lil too laggy thro a billet 8 blade u could even do an 11 just remember there more blade the faster it will light but the more u lose up top. If that makes sense

@@Bray-tl1kx I already did the 11 on the smaller turbo and a drag radial. I'm going to a six-blade 62 mm. Using the same exhaust wheel and housing. So it shouldn't be too laggy. Considering it's a hybrid

Have a link for one?

@@fbi6540 for which?

Sweet. How did you turn out with whatever you did. I'm building a meth injected turbo charged 2003 Passat. Stage two plus tune. Tore down the turbo and am upgrading as big a wheel as I can tryna find the diff between 6 n 7. Got a 7 46.5/56 inch now. With cutback. All that stuff size makes a diff. A few. MM can make a huge difference.

Since diesel guys like 4+4 5+5 a lot. I bet 6+6 is better with smaller trim AKA small inducer big exducer for higher boost.

I don’t powdercoat

I'd like to know as well. Whats the sound differential between the two.

The 11 blade is the quietest by far. 6 and 7 blade wheels scream like Jets

@@AU10ZC i had my 11 and sounds like a supercharger or something was leaking

no kidding.

I do not know. Are you not willing to find out if the shaft is straight and balanced?

Wow never seen one of those that's cool!

what do u mean quietest ? less turbo noises?

I have 11 blades. By quietest you mean you can hear it everywhere when you want to hear it. And sneak around when you don’t 🚔

6+6 make more power at hight boost

what do u mean way louder?

@@1bad335ii by sound and spool up.

Wouldn’t a 6 blade be louder than an 11 even without an anti surge housing? Less blade = more noise??

​@@tayvonrose2528yes

What you want is the “T51R Mod”. You will need a minimum 4” compressor intake with the smallest being a G30 Series sized turbo 400-650hp. The mod only can be done on 4-6” compressor housing. Nothing smaller that. That’s the “turbine” sound that everyone wants, about 400$usd for the mod, with your own turbo used.

I have stock of a lot of them, which one are you looking for?

It depends. They do flow worse at lower pressure ratios but are more efficient at high pressure ratios, which may improve flow in the top end if you're running the turbo out of its efficiency range on a 6+6 or 7+7 wheel. They do have a quicker boost response, but they also have a narrower torque band. You can have an 11 blade flow more than a 6+6 in the top end if your 11 blade has geometry that is focused towards that top end flow at really high turbine rpms, but you'll lose some of that low end despite having a faster perceived spool if that makes sense. For some applications a 6+6 or 7+7 makes more power, particularly at lower pressure ratios and lower shaft speeds if you're looking to make peak power. For others, like say you are dealing with boost tapering off hard at high rpm, you may be able to get a bit more pressure in the top end with a full bladed wheel like a 9+0 or 11+0. Say you're turning up the torque request on a car with a stock turbo on it, and you're pushing the turbo hard enough, and spinning it fast enough to the point where it's not flowing more air, it's just making more heat. That is when a full bladed wheel may actually perform better. A really large turbo may benefit from a cut down wheel because you're going to be spinning it at lower speeds and generating less heat to begin with, so the lower efficiency at high speeds doesn't matter as much.

We do the v6 upgrade for 500 and the 4 cylinder upgrade for 650

10 blade turbine

@@zoelguy5195 The turbine and compressor are different.

Did you find out witch was the loudest?

Links?

Read elsewhere, where? The internet? Cause what he's saying is true, it's all based off aerodynamics. As the air inlet Mach number rises, the air flow within the blades goes transonic or sonic, forming a wake that starts to effectively block the passageway. If you don't believe me, grab a copy of NA cumptsys "compressor aerodynamics" yourself, or believe the internet...

Joe Kirian based on Robert Young from Forced Performance (highly respected turbo builder in motorsports) he explains how basically the volume of air between each blade of greater, so more air more per revolution at lower shaft speeds. However this becomes inefficient at higher shaft speeds, hence moving to a higher blade count. While I don’t dispute what you are saying, what I’m saying is that there is a disparity between theory and practice. and these guys have the real world experience so to speak.

The higher blade count has to do with the wheels processing ability. Due to a phenomenon called compressor wake, where the pressure is unevenly spread throughout the blades flow path, a higher blade count better seperates the air so pressure is more evenly distributed. Inducer blade count and angle is determined by flow rate and planned inlet flow speed.

@@170turbo Thats correct. If you look at Garretts first GTX line (which pretty much what everyone else copied the 11 full blade design from) their compressor maps shows they flow less peak lbs/min, but has a taller compressor map which means higher PR capability(more boost), whereas with the later GTX Gen2 and G-series, they reduced the blade count to promote higher lbs/min numbers so the turbos are capable of flowing more air but being efficient at lower PRs. Which is also pretty much the same thing Robert from Forced Performance explained.

My engine rpm is between 1000 -2350

An 85mm inducer on a 12.7 Detroit? You're WAY off. Too big for a work truck.

@@kanehoward7050 Yeah I know but it's not stock. Its my little hot rod wok truck. I'm pushing 50psi instead of my stock 20psi

i had a 6+6 and upgraded it to 11+0 and its more laggy

Really? Oh man. Don't tell me that.

More space between blades = more airflow which equals faster spooling and better cooling

No it isn't. It's pretty simple, when all things are equal. Reducing surface area by adding more or taller blades increases pressure sooner. Less blades have less surface area, take longer to create the same pressure - allowing higher pressures, thus also creating more mass flow.

It’s butt dyno proven

Only if the aero is different between the two which is hard to understand because most of the Chinese compressor wheels don't note the difference clearly. Some of them call it extended tip if the aero is different but you never know.

@@turbolabamerica do you recommend using an 11 blade compressor wheel on a vw jetta 1 4 tsi k03 turbocharger?

The turbine wheels is inconel casting which gets welded to chromoly steel the it all gets machined down to size.

Jonathan Craig it’s a reason why turbo companies using 11 blades now they perform better all the way around.

@@SIRICKO yeah because all turbochargers are made the same. Lol come on now.

@@rickyr7790 Facepalm

@@SIRICKO I'm with you man. 11 blade is what I got and it rocks! Garrett gtx series and newer all use at least 11 blade for a reason.

@Jonathan Craig same exact size?