Gt22 Turbo

[Stayla Casillas]

GarrettGT Series is the name that pioneered turbo technology and boosted drag racing and road racing teams to break hundreds of world records. The GT Series lineup is offered in both journal and ball bearing options, and sizes ranging from GT2052 to GT3582. The cast compressor wheels feature original GT Series aerodynamics and provide maximum durability and longevity. Internally wastegated turbine housing options are available in all GT Series sizes. Turbine kits are offered in open volute and twin scroll, and a variety of A/R and flange configurations. For any performance need, GT Series turbochargers have you covered.

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Hello Phill, about your GT22 turbo you need to remember that Diesel engines need more airflow to run. Almost twice the air is needed to make the same power as petrol engines.

So in theory if that GT22 turbocharger you have can provide airflow for a Diesel to make 160 hp, it should be able to give you around 300-320 hp on a petrol engine.

So in short 280bhp should be possible. You can also confirm this and measure the Inducer size, that's 40.2 mm for the GT2252. If it's bigger or around the same for your GT22 turbo then you know for sure it will be able to make the power.

Cheers

JD

Hello, the Toyota 2.7 liter 3RZ engines can use bigger turbos if you like. And they are very strong in stock form if you don't over rev them. I would look at the 62 TRIM Garrett GT2860R turbocharger or the Garrett GT2860RS (disco turbo).

Both would give you a solid 300hp with 15 psi / 1 bar boost. Or if you push the 62 trim GT2860R to 20 psi / 1.5 bar boost you could get around 350hp. Power should start to come in around 3000rpm and hold all the way to 5-6000rpm with that setup.

If you want a bit faster spool then the Garrett GT2560R turbo is a good choice, but it being a bit smaller than the rest around 300hp is about the best you can expect with the same boost pressures.

Hello Robert, the GT2252 would be a good turbo and give you the air flow you need with 7 psi boost. Another turbocharger you can look at is the GT2056, this one have a little bit smaller 47mm turbine housing vs the 50.3mm housing the GT2252 have, so it will give you a bit faster spool and still give you the air flow you need at around 7 psi boost.

However on bigger engines if you are looking more for top end power and have a high revving engine then it's better to go with a bit bigger turbine housing because a small turbine housing might start to restrict the exhaust flow at higher rpms.

Hello, the best way to set the actuator rod is to undo the nut on the arm so everything is lose, take off the actuator clip (careful not to lose the clip, but if you do manage to drop it you can use a piece of steel / copper wire to secure the arm again)

Adjust the actuator arm length by hand so that you can without much effort remove it and put it back on the wastegate linkage. At this point the turbocharger should only be able to make a few psi boost. So now you can shorten the actuator by a turn or two so you barely can by hand get it onto the linkage to reach the stock boost levels.

However the best and correct way to do this adjustment would be with a boost gauge fitted, that is the only real way to know what boost you are getting. But if you don't have one then this is a quick way to get close to stock boost levels.

Hello, I think the MB Vito W447 engine use a BorgWarner turbo and not Garrett. Some of the new Vito engines also have a combined twin turbo setup. It's two small BorgWarner turbos that have a shared turbine housing with the pressure side of the compressor housing joined. If this is the case then you should see the part number A651090168 and BorgWarner on a blue label located at the end of the turbo compressor boost pipe. If you follow the intercooler boost hose you can see the label on the turbo.

Hello Diesel dave, the TB2557 turbocharger have a 39,65mm compressor inducer and use a 53mm turbine wheel. The GT2252 turbo almost the same, however it's got a little bit bigger compressor wheel with 40,2mm inducer and have a 50,3mm turbine wheel. So they are very similar however the GT2252 would give you a bit more power due to the slight bigger compressor, but also give you a bit faster spool times due to the smaller turbine housing used.

Hello dave, the GT28 turbos all have the same 53,9mm size turbine housings also, but the bigger 47,2mm compressor on the GT2860R turbo would probably give you +100hp over your stock turbo setup. The biggest advantage the GT2860R have over the TB2557 and GT22 turbos is the ball bearings used, so spool times even with the bigger compressor will be similar to the stock turbo.

Make sure you don't get the GT2860R turbo with the 44,6mm compressor as it won't give much more power over stock turbo setup. You can look at the GT2859R that have a 44,5mm compressor also but you won't get much more power from that turbo either over stock, it's advantage is the improved spool times only.

Thank you for your input. Lastly If you were to suggest a turbo for a td27 with a tuned boost compensated injector pump what would it be. Thanks again td27 is a 2.7 diesel nissan engine for referance

Hello dave, if you are not going with any bigger injectors and only a tuned injector pump then I would suggest the ball bearing GT2859R turbo that have the 44,5mm compressor. It is more efficient at higher boost pressures around 2 bar / 30 psi. It should be good for another +40hp over stock setup.

You can also look into the newer VNT-turbos that Garrett have, however they have a very strict policy and don't let you repair or buy spare parts for those and are only sold as complete units.

I just found your blog, really nice to see someone with experiance answer direct questions, great job! In that respect I'm looking at adding a turbo to a 2000cc air cooled VW engine that I'm building for my 1800lb street kit car (Laser 197). I've done all the chassis, brake, and suspension mods 1st so as to prepare the car for increased performance. Here is what I've added to the engine. Web Camshaft 86 grind (warm street) good for up to 5500RPM. 8.5/1 forged pistons. Matched the ports in the heads and the intake manifolds by myself. Carbs are 2 X 2bbl. 40mm down draft HPMX carbs. Ideally I'd like to have boost come in at a really low RPM so as to give it a real kick driving around on the street. Would you recommend the GT28 for my application? Thanks!

Hello, the air cooled VW engines normally spool turbos very well probably due to the bigger piston design among other things. If you go with the smaller turbine GT2854R turbo you might get it to spool around 3000rpm. But still if you are going to stick with a carb setup you might have a hard time getting the fuel mixture right, so that might hurt spool times a bit.

Ideally you want to use smaller carbs or use small chokes on a turbo setup to help keep the speed of the airflow high so that the fuel atomizes better.

Hello, for the Volkswagen Up engine the Garrett GT1241 turbo would be a good choice. You should get around 100hp with 0.5 bar / 7 psi boost. And with the same turbo setup you could push it to 130hp with 1 bar / 15 psi boost.

The high compression ratio of 10.5:1 or 11.0:1 on some Up engines makes it important you have a good intercooler fitted even if you run low boost. If you want to run high boost and make 130 hp then I would also switch over to E85 fuel to be on the safe side.

Hello, for a 2.5l Toyota 22re both the GT2252 and GT2554 are good choices. But I would go with the GT2554 turbo if quick spool and low boost is most important to you. The GT2554 does have a slightly smaller turbine housing AR and you have the Dual Ball Bearings that are going to help the turbo spool up quick and be more responsive between gears.

However if you want to run higher boost and have a high revving engine then the GT2252 would be the better option, but you would also have less low end power due to the Journal Bearings and better flowing turbine housing.

Hi JD!

I have a BMW 330D E92 180Kw 2010

I have updated the engine management with BSR so today I will have 220Kw

At the same time as I bought this tune, I also upgraded IC from Wagner tuning model adapted IC (Intercooler)

Today I ordered an original turbo (GT22V) which I intend to make into a Hybrid turbo.

They talk about how they can increase efficiency by 20% from the original turbo.

Do you think that sounds reasonable?

I have not made any other mod modifications to the engine.

So DPF etc etc is still std

How much power increase with a Hybrid Turbo for my setup is reasonable to expect.

Thanks for a super good blog!

Hello RS, you should be able to get around 250kw with the current setup and a good tune. And yes if you also make the GT22V turbo into a hybrid turbo similar to a GT2365V turbo you should get around 300kw, and that is a 20% increase in power.

Hi DJ!

Ok it was a little surprise.

Namely, I have been worried that the current set up is turbo-wise.

began to be already more or less on the verge of being effective.

Because how is it!

The closer you are to what the limit is for what a turbo unit / compressor can deliver efficiently, the more heat is also generated.

So that's why I bought and sent in to get a Hybrid turbo made.

But perhaps now in retrospect it was unnecessary.

With the tuning setup that I had intended to settle for.

Would larger diffusers make a difference in the current situation?

Without, of course, killing DPF prematurely

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