20G-6SL2 Street/Strip Turbocharger

[dsm-onster]

How were you overrunning your maft under 4500 rpms?

It was overrunning at 5200rpms. It just hits so quick and hard that torque stear took my eyes off the logger.

I've encountered maf overrun before. But I didn't expect it before 6K with a supposedly larger turbo. This turbo spools the fastest I've ever had experience with for the size. This turbo has compressor diameters comparable to a gt37 with turbine wheel diameters comparable to a gt35r.

 

[Black_Bullet]

It just hits so quick and hard that torque stear took my eyes off the logger.

An additional example for a knock buzzer.

This turbo spools the fastest I've ever had experience with for the size. This turbo has compressor diameters comparable to a gt37 with turbine wheel diameters comparable to a gt35r.

Interesting, thats a good combo, but ....Sounds like you need new tires a lot

 

[bastard dsm]

well i cant say anything about the 20g but just to let yall know i made 445hp/434lbs on their
18g sl2 and love it.the 20g sould be good for about 500hp if your willing to use it.

 

[turboglenn]

well i cant say anything about the 20g but just to let yall know i made 445hp/434lbs on their
18g sl2 and love it.the 20g sould be good for about 500hp if your willing to use it.

at what boost pressure was it and what did it fall to PSI-wise by the end of the pull? I ask because that's about my max WHP output that i'm after, so this could be the setup i want

 

[90laserRSfwd]

I posted this turbo in January, this isn't new at all, it's not cheap either and thats why I still am on the 14b. I can't justify saving $100 off retail, then tack another $150 back on for a wastegate. I'd rather get a gt35r, if I am spending over $1,000

 

[bastard dsm]

it was at 28psi spike and tapering down to 25psi at red line 7k.

 

[400HP1GT]

Speed cost money, how fast do you want to go?

 

[chavez408]

A wastegate for $125 that is cheap..
I would go after a 30r. Less laggy. $1300 too!

 

[dsm-onster]

Speed cost money, how fast do you want to go?

No. It does not have to $1000 to get the same flow potential, spool, reliability, with bolt-on parts.

Considering that a 20g is $1000. . . DSMer bullheadedness hasn't paid off. A 20g simply isn't the best turbo for the price.

 

[h8r]

How about the GB price?

 

[Steve93Talon]

onsidering that a 20g is $1000. . . DSMer bullheadedness hasn't paid off. A 20g simply isn't the best turbo for the price.

Clearly you've never owned one.

 

[dsm-onster]

No I havn't. I'm not knocking your 20g, Steve . But, I've ridden in a well tuned DSM with a td06 20g with a 7cm turbine housing. It was an impressive machine. But so was an hx35 and a t3 stage3 50-trim. All used to over 400whp. And all had very similar spool characteristics. Both the garrett and holset flow more and were cheaper. I'm not knocking the 20g. It is dsm heritage. They hit VERY hard. They spool as early as the other two turbos I mentioned Bat what does a 20g offer that a 50-trim and bep housing doesn't other than accomodating stock oil lines?

Now getting a 20g from a fuso, or getting a cheap 17c from a typhoon and replacing the compressor wheel with a 20g wheel. . . That's VERY worth the costs involved.

 

[chavez408]

well from what I see now a days, Almost every mid turbo size is knocking on the door to the 1k price range. And since the 20g does not require new lines, unlike a 5031BB that needs to be feed through the housing, it should save a buck or two.

 

[chavez408]

One question, would a 20g be friendly with pump gas? (91 oct) running 20 plus boost daily.

 

[fwdeclipse]

I am running a tdo5h 20g with a 15* clip on it. I am running 23psi on 91 with meth injection and saw no knock on stock cams. I added 272s and now am seeing about 3 counts of knock. I think I need to go external cause at 23psi it does not seem a whole lot faster than my evo3 was at this boost level. This is the max the internal will allow. I think past 25psi this turbo would make the difference felt.

 

[chavez408]

Well your running meth.. That will reduce knock. I will be running straight 91 oct.

 

[We're on Boost]

well i cant say anything about the 20g but just to let yall know i made 445hp/434lbs on their
18g sl2 and love it.the 20g sould be good for about 500hp if your willing to use it.

BD, I tried looking at your dyno in photobucket, and even at "full size" it is totally unreadable, and it's only 256 x 320 pixels. Could you you post a better picture of that dyno? I would really like to see it. Was the dyno run on e85? Any water or meth injection?

Thanks,
Gary

 

[We're on Boost]

One question, would a 20g be friendly with pump gas? (91 oct) running 20 plus boost daily.

That's my question too. The 20g that is the subject of this thread, how much can it put out without meth, water, e85, race gas, or knock?

Gary

 

[dsm-onster]

well from what I see now a days, Almost every mid turbo size is knocking on the door to the 1k price range. And since the 20g does not require new lines, unlike a 5031BB that needs to be feed through the housing, it should save a buck or two.

My setup didn't cost half that and it flows more and spools earlier than a td06 20g.

I've personally seen a 20g powered car run 21 psi on pumpgas and good sized ebay fmic. When he added cams he encountered a small amount of knock as well. This is because the cams increase cylinder pressures (higher ve). I got away with 23 psi with my FMIC and stock cams with my td05h 18g (same compressor exducer and blade shape, which greatly influences compressor efficiency) and no injection.

fwdeclipse, because you're running a td05h wheel with a clip, your turbine may not be able to convert enough exhaust energy to rotation for much more compressor rpm. Of course you'll have to just push it and find out. But if you start losing boost up top, don't assume that the 20 compressor is maxed out. The 20g compressor can flow .33m^3/sec or 700cfm. If you want more and you're logging much less than 700cfm (based on hertz count), I'd switch to a td06 wheel.

Again Tort's car CLEARLY was a monster. He ran a clipped td05h turbine. He even mentioned recently that it's unlikely a td05h 20g can see 42-44 lbs/min at 24psi with a stock 2.0. His was "clipped to he!!". 700cfm, depending on environment, is usually much more than 44 lbs/min. If you're falling to this boost by redline then look at this turbine option. That's what makes this td06sl wheel interesting.

The question I posed earlier in this thread, is does this "new" turbine flow enough for 20g compressor potential. If not, then the 20g wheel just has needless extra rotating mass for a turbo that flows no more than a evo3 16g. Clearly it can spool faster than a td06h or likely even a td06. Bastard dsm gives us hope. He took an 18g compressor wheel and it held to 25 psi by 7K with BC280s, a Magnus intake mani, And FP race exhaust mani using the td06sl. This puts cfm at close to 700 !!!

 

[Steve93Talon]

Again Tort's car CLEARLY was a monster. He ran a clipped td05h turbine. He even mentioned recently that it's unlikely a td05h 20g can see 42-44 lbs/min at 24psi with a stock 2.0. His was "clipped to he!!". 700cfm, depending on environment, is usually much more than 44 lbs/min. If you're falling to this boost by redline then look at this turbine option. That's what makes this td06sl wheel interesting.

Tort's car was a "monster" because it was built with well matched parts and tuned half decently. It has some weight reduction but I'd hardly call it gutted. It was still on a stock engine/head/intake manifold. Anyone could take the same parts and run the same times easily. The car ran it's best numbers at 28psi on VP103 unleaded. On pump at 25-26psi it still pulled damn near as hard. Tort's comment about airflow was simply to cover his ass against bench racing since we have no logs to prove anything one way or another. As many EVO 16g owners have proven, Mitsu wheels can perform WELL beyond their ratings.

 

[dsm-onster]

They don't flow well beyond their maps. Their maps show flow well beyond their inducer would suggest. And DSMs pull lower bsfc numbers than expected. . . Because people like Tort know how to combine "well matched parts". The 20g compressor has a little over 700cfm in it (typically 47-49 lbs/min). What the builder does with that airflow number sets him apart.

He didn't have to mention any numbers. His doubts are apparently founded on his experience.

 

[chavez408]

Man this is harder than I thought. Choosing the right turbo for my set up.

 

[Black_Bullet]

Man this is harder than I thought. Choosing the right turbo for my set up.

Its just a matter of being realistic with your goals, what kind of gas you will be running, what kind of power band you need, and how hard you want to push it.

 

[dsm-onster]

It's hard to decide on a turbo that hasn't been proven, yet. I had a similar experience recently going back and forth with the proven hx35 or the obscure h1c which according to the web is very similar. I chose the h1c and am very satisfied so far. The hx35 though is a sure shot for my goal, 450-500whp street power. I'll see if the h1c minor differences will be a factor.

You want around 450whp. . .The "regular" td06 20g fits that bill. The 50-trim with a t3stage3 turbine and a bolton housing (like a PTE 5031re) can do it. Both can do it realistically and not extremely pushing the turbo. I think the td06sl 20g can meet you goal. The td06sl 18g has done 445whp. If that's the most you want, go for that more affordable turbo. It will spool a little sooner to boot.

 

[chavez408]

Thanks matt. The 6032 is at the same price range as the 5031BB as well.