20g turbo too big?

[talondsmawd]

ive noticed not many people have a 20g turbo on their dsm... and im new to the dsm turbo... is a 20g turbo too big? how much boost could it handle.. sorry for the newbie questions i know alot about cars just not turbos

 

[90 Talon AWD]

What are your goals for the car.

 

[projekt1]

If you truly want some advice it is highly recommended that you fill out your profile with whatever mods you might have. Also let us know what your looking at doing as far as your goals. I also recommend you do a lot more searching and reading. But personally, I think the 20G is a badass turbo however for the price you can get something more efficient.

 

[viperbenz1]

you cant run 20g with 450cc , you will need to tune it
fuel pump
fuel injectors 660cc
safc2

 

[red_devil]

ive noticed not many people have a 20g turbo on their dsm... and im new to the dsm turbo... is a 20g turbo too big? how much boost could it handle.. sorry for the newbie questions i know alot about cars just not turbos

No turbo is too big

Try looking at the mod lists and got through it one by one

 

[talondsmawd]

ok hold on giveme one sec to write out my mod list

 

[talondsmawd]

6 bolt block wiseco 8.8:1 pistons scat H-beam rods balance shafts removed ARP rod,main,head studs mitsu mls headgasket HKS 264 intake/exhaust cams ferrea S.S valves/springs/retainers Fidanza cam gears (adj) JDM intake manifold sheppardraceing stage II trans act 2900 10lb flywheel jacks transfer case 2g exhaust manifold ported 20g mitsu turbo buschur FMIC short route piping eprom ecu tmo chip for 660 injectors ( has 750s) safc2 apexi avcr hks turbo timer 3 inch exhaust with a N1 muffler

when i was looking to buy a dsm i found a great deal on a modded one..with only 10,000 on rebuild it only has stupid little problems that im trying to solve.. like when i rev past 2 grand and i push in the clutch it dies.. i have another post about this issue...any help would be greatly appreciated

 

[black_gst]

I Have A 20g And I Love It. And ItS Good For Atleast 30psi Im Not Sure When It Maxes Out Though

 

[JusMX141]

No turbo is too big

That's not the way to think. Sure big turbos are eye candy, but if you're not using the airflow that an enormous turbo is capable of producing then the only thing you've gained is lag.

Ever witnessed someone bolt a bigger turbo on their car and the car was suddenly slower? A bigger compressor wheel is less efficient at compressing air at lower boost levels....the air tends to cavitate in the giant compressor housing instead of moving outward with force.

This is what's so hilarious about Honda guys who bolt GT35R's on their cars and run 6psi. A smaller turbo that is more suited to their car's RPM range would not only spool faster but produce more peak airflow at the same boost level as a monster. With that in mind, a 20G on an otherwise stock car would be an absolute waste.

A 20G is without a doubt my favorite street turbo for any lightly-modded DSM....it retains the complete bolt-on characteristic of a factory turbo and is completely bolt-on using all of the stock oil lines, water lines, and o2 housing.



There are many different 20G's available in many different housings, making the 20G one of the most versatile turbos available for our cars:

"Sleeper 16G" / "Bastard 20G" = 20G compressor wheel in a TD05H compressor cover, mated to a TD05H turbine wheel.

Standard TD05H 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD05H turbine. This is the most popular type of 20G for our cars. The Buschur 20G is derived from this version, with a 20* clipped TD05H turbine.

Standard TD06 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06 turbine.

TD06-SL2 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06-SL2 turbine.

Standard TD06H 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06H turbine.

Frank Level 1 20G = 46-trim Garrett compressor wheel in a TD06 17C or 20G compressor cover, 2-1/4" compressor inlet, mated to a TD05H turbine.

Frank Level 2 20G = 46-trim Garrett compressor wheel in a TD06 17C or 20G compressor cover, 2-1/4" compressor inlet, mated to a TD06 turbine.

Frank Level 3 20G = 54-trim Garrett compressor wheel in a TD06 17C (2-1/4" inlet) or upgraded 20G (3" inlet) compressor cover, mated to a TD06 turbine.

Frank Level 4 20G = 60-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06 turbine.

Frank Level 5 20G = 60-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06H turbine.

FP Green = 50-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06H turbine.

FP Red = 60-1 Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a clipped TD06H turbine.

 

[projekt1]

Yea, what ^^^ he said. It all boils down to efficiency.

 

[PaRaNORML]

20g is a great turbo, if you have the mods to support it of course, i reccomend 750cc injectors 255 fuel pump,wide band,Safc,and a larger intake manfiold,my 20g ran like crap on my car without mods,boost would creep and fuel would dump

 

[talondsmawd]

wow you sure said a bunch of somethin ...well with the mods i have which idk if i would consider it "lightly" modded...but do you think that i should go for more of a smaller turbo. im going for quarter mile times with this car..and does anyone have any advice on the problem im haveing with the dieing when reved up

 

[PaRaNORML]

why are you double posting? i told you to check your MAF !!!! dont double post to try get a diffrent awnser

 

[PaRaNORML]

test the MAF if thats not your problem let us know to further assist you,"not trying to be an ass man but just check,also search the forums first before posting,there a 100's of 20g questions just like yours where you can find more awnsers

 

[red_devil]

That's not the way to think. Sure big turbos are eye candy, but if you're not using the airflow that an enormous turbo is capable of producing then the only thing you've gained is lag.

Ever witnessed someone bolt a bigger turbo on their car and the car was suddenly slower? A bigger compressor wheel is less efficient at compressing air at lower boost levels....the air tends to cavitate in the giant compressor housing instead of moving outward with force.

This is what's so hilarious about Honda guys who bolt GT35R's on their cars and run 6psi. A smaller turbo that is more suited to their car's RPM range would not only spool faster but produce more peak airflow at the same boost level as a monster. With that in mind, a 20G on an otherwise stock car would be an absolute waste.

A 20G is without a doubt my favorite street turbo for any lightly-modded DSM....it retains the complete bolt-on characteristic of a factory turbo and is completely bolt-on using all of the stock oil lines, water lines, and o2 housing.



There are many different 20G's available in many different housings, making the 20G one of the most versatile turbos available for our cars:

"Sleeper 16G" / "Bastard 20G" = 20G compressor wheel in a TD05H compressor cover, mated to a TD05H turbine wheel.

Standard TD05H 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD05H turbine. This is the most popular type of 20G for our cars. The Buschur 20G is derived from this version, with a 20* clipped TD05H turbine.

Standard TD06 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06 turbine.

TD06-SL2 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06-SL2 turbine.

Standard TD06H 20G = 20G compressor wheel in a TD06 cover, 2-1/4" compressor inlet, mated to a TD06H turbine.

Frank Level 1 20G = 46-trim Garrett compressor wheel in a TD06 17C or 20G compressor cover, 2-1/4" compressor inlet, mated to a TD05H turbine.

Frank Level 2 20G = 46-trim Garrett compressor wheel in a TD06 17C or 20G compressor cover, 2-1/4" compressor inlet, mated to a TD06 turbine.

Frank Level 3 20G = 54-trim Garrett compressor wheel in a TD06 17C (2-1/4" inlet) or upgraded 20G (3" inlet) compressor cover, mated to a TD06 turbine.

Frank Level 4 20G = 60-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06 turbine.

Frank Level 5 20G = 60-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06H turbine.

FP Green = 50-trim Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a TD06H turbine.

FP Red = 60-1 Garrett compressor wheel in an upgraded TD06 20G compressor cover, 3" inlet, mated to a clipped TD06H turbine.

Just trying humor for an over asked question, but your right it is about the best bolt-on street turbo out there

 

[ttravis88t]

No turbo is too big

Try looking at the mod lists and got through it one by one

I run one, not too big at all boost hits at 3.5k

 

[NOSLO2PT0]

Hey. Welcome to 12yrs ago!

 

[J1011854]

Make it 13 now BUT with a new question. I picked up a tdo5h big 16g and threw on the 7cm turbine housing, and a tdo6h turbolabofamerica made billet compressor cover and wheel. The wastegate for the 16 didn’t bolt on as the mount Point is on the back of the new compressor housing. Had to make one from my t25 spare. What wastegate would bolt up to the back of this compressor housing?. I can provide a link to exact one if needed. Appreciate any replies from this old thread

 

[JusMX141]

Make it 13 now BUT with a new question. I picked up a tdo5h big 16g and threw on the 7cm turbine housing, and a tdo6h turbolabofamerica made billet compressor cover and wheel. The wastegate for the 16 didn’t bolt on as the mount Point is on the back of the new compressor housing. Had to make one from my t25 spare. What wastegate would bolt up to the back of this compressor housing?. I can provide a link to exact one if needed. Appreciate any replies from this old thread

There are none- the actuators need to be 100% custom-fabricated. The compressor housing will also need to be pinned so it doesn't slide under the tension of the actuator and the weight of the lower intercooler pipe...if it slides, it completely screws up the tension of the wastegate. Internal gates are best left to stock-appearing covers because they're a complete pain on the downfiring covers. Also, Turbo Lab didn't make those parts; China did.