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Old Dec 9, 2003 | 09:24 PM
  #76  
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From: Rosedale, IN
Originally posted by OmarSpeedAddict
Yo 94AWDcoupe:



what do you mean by dog?
later man
omar
He means that a turbo that spools to 20 psi by 4500 RPM in 4th gear will reach a max of about 14 psi by redline in first and 16 psi by redline in second gear. There just isn't enough time in the lower gears to spool up a big turbo before it is time to shift to the next gear.....also, 14 to 16 psi is no where near the efficiency island on a large turbo so in addition to running low boost in the first couple gears you are not getting efficient use of the turbo at that low of a boost level.

Keith
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Old Dec 10, 2003 | 08:25 AM
  #77  
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From: Ozark, MO
Originally posted by 94AWDcoupe
I am uncomprimizing when it comes to the turbo I want to run on the street. I think I know better than anyboody cause I have had so many turbos on my car. Here is what I have found.

Ball bearing turbos? I have run a bb 57trim and a reg 57trim. BB turbos do not spool faster. If you roll into it from third gear both turbos hit hard at 3900rpm. Where a bb turbo shines is in between shifts. The bb turbo has way faster transient responce. Is it worth it? For anything 50trim or bigger. YES. Are they unreliable. No. If you run a filter inline nothing but clean oil gets to the turbo and it lasts as long as any. I just opened my filter after about 10k miles, I was amazed at all the very small metal particles that I found inside. As far as I am concerned a filter is a must on any turbo. Are the new GT turbos better than the the stuff that has been around for decades? NO. Its just a couple of fan blades attatched to a shaft. I tested a 52lb gt bb turbo against my 57 trim. The 57trim kicked *** over the gt turbo. Andre (pump gas king of NJ) had the same results when he swapped in a 55lb gt turbo in for the 50trim green he had been running for years. He now runs another 50trimturbo.

Best turbo I have tried. 25g. Mitsubishi turbos rock. They are the bomb comparred to garret stuff. They do use small shaft and small bearings and thrust surface. This gives the turbo great responce but it suffers in the reliablity department comparred to the far more durable garret stuff. Use a filter and a good blow of valve and expect it to outlast the engine. A small blow of valve can kill the thrust surface in a hurry and turbo is toast.

Another note on turbo choice. If you are looking at dyno charts to see how fast the turbo is spooling remember this. The car was likely dynoed in 4th gear if it was on a 2wd dyno. This says nothing for the pefrormance in 1, 2, and 3. If the turbo spools at 4500 in 4th it is likey a dog in 1st and 2nd. If turbo is not hitting hard at 4000-4200 than it is a race turbo that works good on the street rather than a street turbo that works well at the track.

Hope some of you look real hard at some of the things I have said and make smart choices. that twin scroll16 is a hella of a turbo and is going to be hard to beat for a street car. Dave Burshur has already stressed this if you dont take it from me take it from him.


Thanks man for the great info and to share what you have experienced. So what would you recomend for the best all around turbo to get 400 whp on pumpgas 93 but still be a daily driver, not just a quartermile car? I truly like the 16g becuase the power feels like a turbo but it honesly doesn't have any bad side to it at 19 -20 psi. I know that I won't be able to get this out of a bigger turbo but I would like to stay close. So would you say a 20g or 25g for my needs?
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Old Dec 10, 2003 | 09:37 AM
  #78  
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From: Maryland
Originally posted by Turbo Weapon



E50 trim stage 3 exhaust wheel .63 a/r turbine housing.

here is a dyno sheet 23 psi 93 octane this was using a 50 trim/mitsu hybrid turbo. once he went with a full garrett 50 trim he made 466whp on pump, But this was on a DSM


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Old Dec 10, 2003 | 11:46 AM
  #79  
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Originally posted by GTVEVO




Thanks man for the great info and to share what you have experienced. So what would you recomend for the best all around turbo to get 400 whp on pumpgas 93 but still be a daily driver, not just a quartermile car? I truly like the 16g becuase the power feels like a turbo but it honesly doesn't have any bad side to it at 19 -20 psi. I know that I won't be able to get this out of a bigger turbo but I would like to stay close. So would you say a 20g or 25g for my needs?
The 16g actually is pretty crappy at 19-20 psi. A 20g is definitley a good turbo, but a 25g is a bit to large for the typical street car. i say 20g, or 50 trim.
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Old Dec 10, 2003 | 04:33 PM
  #80  
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If 400whp is your goal I would wait for the availabilty of of burshurs exhuast mani. Then use a 20g with a td06h ex wheel.
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Old Dec 10, 2003 | 05:32 PM
  #81  
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I thought Buschur was going to use Garrett style turbos.
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Old Dec 10, 2003 | 07:57 PM
  #82  
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You will be able to run any turbo that is used on dsms with buschur's manifolds. 20g, fp green, fp 3065, etc.When you buy the "kit" it will include one his garrett based turbos (pte style turbo housing). If you want 400whp on pump then I would stick with a 50 trim turbo.
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Old Dec 11, 2003 | 07:01 AM
  #83  
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So what do you guys think of the Turbochargers.com Evo upgrade? It looks like it would be a 20g comp wheel. Should be comparable to the older 20G hybrids using the 5cm^2 housing, right?
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Old Dec 11, 2003 | 09:22 AM
  #84  
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Originally posted by mhgsx
So what do you guys think of the Turbochargers.com Evo upgrade? It looks like it would be a 20g comp wheel. Should be comparable to the older 20G hybrids using the 5cm^2 housing, right?
Buschur has tried it and says it needs work... posted elsewhere...
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Old Dec 11, 2003 | 11:25 AM
  #85  
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Originally posted by Zeus


Buschur has tried it and says it needs work... posted elsewhere...
I know that, but he really never explained what was wrong with it. What didn't he like about it? Not enough top end to justify the price?

I would think that this should give you enough to get 400 whp but at the same time, spool as fast as stock. Again, assuming it is a 20G compressor wheel.

If David is looking to compare this to his 550 series turbo, then of course it won't be enough. But for those of us who are just interested in reaching that mark w/ the least amount of drawbacks, this might be it.

I really wished that someone had tried it when they had that Vishnu dyno day down in Texas.
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Old Dec 11, 2003 | 12:16 PM
  #86  
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I do not think mitsubishi ever created a reverse spinning 20G compressor, and no one has ever made a 20g hybrid with a 5ch turbine.....your thinking of a 7 cm turbine(stock on a manual car is 6)
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Old Dec 11, 2003 | 12:41 PM
  #87  
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From: Austin, TX
Originally posted by mhgsx
I would think that this should give you enough to get 400 whp but at the same time, spool as fast as stock.
I also, am looking for a bolt on 93 octane 400+whp turbo (like so many DSM guys have)... like was just posted though, I don't think there is such an animal yet...
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Old Dec 11, 2003 | 05:55 PM
  #88  
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Originally posted by ItsStockOfficer
I do not think mitsubishi ever created a reverse spinning 20G compressor, and no one has ever made a 20g hybrid with a 5ch turbine.....your thinking of a 7 cm turbine(stock on a manual car is 6)
Yup, that was it, my bad.
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Old Dec 14, 2003 | 06:02 AM
  #89  
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From: Maryland
Originally posted by Zeus


I also, am looking for a bolt on 93 octane 400+whp turbo (like so many DSM guys have)... like was just posted though, I don't think there is such an animal yet...
that bar was just raised with a 503whp dyno run on pump gas. the 50 trim just works on pump gas. details can be found Here

Last edited by Turbo Weapon; Dec 14, 2003 at 06:06 AM.
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Old Dec 14, 2003 | 08:34 AM
  #90  
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From: Austin, TX
Very sweet... now do they have one for MY car?

Then again, I think I'd give up some of that crazy pump gas top end for a little quicker spool... and I might not...

Last edited by Zeus; Dec 14, 2003 at 08:39 AM.
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