how much hp with 20g

[cmptrphreak]

How much hp can a mitubishi 20g make at max with a full port and polish and the TDO6H Turbine Wheel. Just looking for an estimate. I want to keep the stock mitsu style manifold but make some nice hp.

 

[ivanr4g63]

Are you looking for max HP at the track? or this is on a street setup?

With the right supporting mods, and tunning TDOH6 and full port job you should be able to see 360~380 AWHP maybe a bit more, but the again this is pretty much the limit for a stock motor, so unless you have a pretty healthy motor I wouldn't push the powerband to the limit.
According to many other tuners, this turbo is the pretty close to a 50 trim turbo, so the power range should be close, but the 50 trim develops more top end power.

 

[No_Skillz]

I hear many people prefer the 20g over the 50 trim. Anyome have any input as to why?

 

[cmptrphreak]

Well my motor has only 2000 miles on it on a full rebuild. Im pretty sure I can handle the 500 hp goal im trying to reach. Can this turbo pump out 500 hp?

 

[almostquick]

I'd say 400-450hp

 

[sweet97]

About 475 crank HP. lbs/min.x10.86=BHP. I believe the 20G is capable of flowing 44lbs/min. Buschur got theirs into the 10's, nothing wrong with that! 20G is a great turbo but priced a bit high so the 50 trims became more popular and they flow 49lbs/min. I had a 20G on my '89 Conquest and it pulled like mad up to the 25psi I ran it at.
I did not check your mods, sorry. Fully supported you will not be dissapointed. Mark PS: Checked for your mods, not there. Here's some of what you need:
1. 650cc injectors minimum
2. Good FMIC that will flow at least 650cfm
3. Cold Air Intake is an inexpensive mod
4. Upgraded fuel pump like the Walbro 255
5. An AFPR
6. No exhaust? Ouch! 3" when you get one unless this is track only.
7. Ported o2 housing/Tubular
8. For the 500HP or close-Cams, I suggest Crowers 415's as I just changed from my HKS 272's for them and nice improvement.
9. Might as well get a SMIM, JM Fabrications had a good one for $450.
You've got a good turbo to build a nice powerful motor around. If 500HP is a must and you have not gotten the turbo you have many choices that will hit the mark.

 

[turbodsm18]

I would say you are looking at 450whp if everything is there to support it.

 

[Matts95TSiAWD]

go MHI 25G woot!

 

[dsmsucks]

The 25g is very hard to find and expensive!

 

[92GSXBaltimore]

back in the day, the 20g was king. With enough blood, sweat, and tears you can hit 10s(although its easier with something larger). The reason some people opt. for the 20g over a 50 trim nowadays is mainly because of the reliability of mitsubishi turbos and the similiar power output.

p.s. to answer your question, you can make well over 400 at the wheels

 

[kanderson111]

How much hp can a mitubishi 20g make at max with a full port and polish and the TDO6H Turbine Wheel. Just looking for an estimate. I want to keep the stock mitsu style manifold but make some nice hp.

The 20g is a good turbo but don't let the Mitsu style manifold stop you. There are many different options out there available with the hybrid turbine housing. You can get just about any kind of turbo you want in a hybrid version that will bolt right onto your stock exhaust manifold, most are also available with an internal waste gate.

 

[bkruahnndon]

what about wheel horsepower with pump gas? any numbers out there?

 

[bkruahnndon]

so apparently nobody has ever run a 20G on pump gas. interesting.

 

[94awdcoupe]

Turbo Trix just made 397whp on pump gas, on an evo8. TD06H/20G.

http://forums.evolutionm.net/showthread.php?t=186368

Very small mod list, fantastic numbers.

 

[bkruahnndon]

thank a bunch, thats the kind of info i was lookin for

 

[GVR4592]

The 20g is one of the oldest and most proven turbo upgrades for a dsm. So it's been discussed thousands of times on this forum. There is no way for anybody to guess what kind of power you can make with a specific turbo because every car is different and every tune is different.

 

[bkruahnndon]

If its been discussed thousands of times on this board, maybe you can show me exactly where. Yes, every car is different and will react differently with different upgrades but that's not the point here. I also must be wrong here when i read a CFM rating on a turbo to estimate its power rating. How can you say there is no way to guess what kind of power you can make???

i was just looking for personal experience from people that have dynoed a 20g on pump gas. That is it, nothing more.

 

[JiggahMan]

If its been discussed thousands of times on this board, maybe you can show me exactly where. Yes, every car is different and will react differently with different upgrades but that's not the point here. I also must be wrong here when i read a CFM rating on a turbo to estimate its power rating. How can you say there is no way to guess what kind of power you can make???

i was just looking for personal experience from people that have dynoed a 20g on pump gas. That is it, nothing more.

Ignorance is bliss, huh?

 

[bkruahnndon]

I hope that wasn't directed toward me?

I just saw you have a 20g in your profile. Do you know what kind of power you are putting down?

 

[Turbocharged]

Let us know what your supporting mods are. If your profile is up to date, you will not be maxing out the 20g. I think 400hp on pump is possible if you have a good tune and the right mods.

I used to have a tdo5h 20g and didnt like it. I switched to a 50 trim and the difference was VERY nice. The tdo6h performs similarly to the 50 trim but is not as efficient when moving lots of air.

 

[94awdcoupe]

I have driven many 50 trim and 20g setups. I wouldn't recommend a 50trim for a 2.0 unless it was race car running very high boost. The 50 trim on a 2.0 is boring under 25psi. The 20g on the other hand is lots of fun 20-25psi. The 50 trim becomes a fine choice for a 2.3. The extra cc makes it come alive.

A friend here made 350whp on a plain jane td05/20g (no clip) vpc 550inj setup. Pump gas 8.8 compression stock cams 2.0, 19psi boost. Car was a ball to drive. He never tweaked this setup and moved to a bigger turbo.

 

[dsm-onster]

If its been discussed thousands of times on this board, maybe you can show me exactly where. Yes, every car is different and will react differently with different upgrades but that's not the point here. I also must be wrong here when i read a CFM rating on a turbo to estimate its power rating. How can you say there is no way to guess what kind of power you can make???

i was just looking for personal experience from people that have dynoed a 20g on pump gas. That is it, nothing more.

Well, I am sure he meant that there is no way to tell how much that turbo will make on your setup. The turbo can only throw out a certain lbs/min before you run into serious reliability issues and/or aircharge heating issues. But, for the most part, only theoretically could anyone determine the output of your setup with a particular turbo. Theory and dyno results are often enough drastically different to merit another way to determine what you are looking for in a turbo. For the sake of theory, you will be off the compressor map if your setup is flowing more than 44 lbs/min based on the compressor map and this calculator. I am pretty sure the 20g compressor map x-axis is rendered in kg/sec. If not, it is rendered in m^3/sec.

So to everyone, if you're developing 462 crank horsepower w/ the 20g, you're on the edge of the compressor map with which we have been provided. 397 awhp is at the edge. The 50-trim has put down more.

It is just my personal preference. But if you have a certain goal, why buy a turbo that can barely meet it. If you want 400 whp go 50-trim or bigger. The 50-trim compressor map shows it to be still rather efficient above 70% and upwards of 74% at higher boost levels.

None of this says that you will achieve this horsepower or airflow level, if you just drop in this turbo and even if you turn up the boost with your turbo upgrade. All this states is that, if your engine demands this much air these turbos will deliver it. If your engine demands more than 44 lbs/min (approx. 460 crank horsepower), then the 20g is not what you need. If your engine demands more than 49 lbs/min (approx. 515 crank horsepower), then the 50 trim is not what you need. I think there is at least one turbo for every 50 horsepower you wish to make.

50 trims that bolt on to the stock mani can be had for cheaper than 20Gs. 50 trims reach 20+ psi at about 3700 rpms. 50-trims are efficient at higher boost and efficient at low boost. Thus, they are called "pump gas kings". 50 trims flow more up top. They are fun to drive because you win races, rolling or stop light.

 

[92GSXBaltimore]

50 trims fail more than 20gs also. Unless you like the color green

 

[Turbocharged]

I have driven many 50 trim and 20g setups. I wouldn't recommend a 50trim for a 2.0 unless it was race car running very high boost. The 50 trim on a 2.0 is boring under 25psi. The 20g on the other hand is lots of fun 20-25psi. The 50 trim becomes a fine choice for a 2.3. The extra cc makes it come alive.

A friend here made 350whp on a plain jane td05/20g (no clip) vpc 550inj setup. Pump gas 8.8 compression stock cams 2.0, 19psi boost. Car was a ball to drive. He never tweaked this setup and moved to a bigger turbo.

I just wanted to chime in here. Having run both the tdo5h 20g and 50 trim on my car, I can say the 50 trim performed better at all boost levels. It has better low end response and was way more efficient at higher boost. I was not able to run higher than 20 psi on the 20g without knock.

Also, if you plot out a 2.3/2.4L motor on a 50 trim compressor map, you will see that the "pump king" is no longer the efficient turbo it once was on the 2.0. I am currently running a 50 trim on a 2.4. The turbo moves a lot of air at 20 psi but it doesnt like 24 psi the way it did on the 2.0.

If you are looking for 500 hp like you said you are, you will need to go bigger than a 50 trim or a 20g for that matter. There is no sence in looking for a turbo that will be pushing hot air at your goal.

 

[dsm-onster]

50 trims fail more than 20gs also. Unless you like the color green

So the FP Green is less reliable than the 20G? Please only refer to brands when referring to reliability.