Forced Induction Supercharger/Turbocharger

Which turbo is better?

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Old Jul 24, 2006 | 05:52 PM
  #1  
ChrisUlrich's Avatar
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Which turbo is better?

The GT Turbo... GT35r, GT42r, etc... Mainly the GT60r
Or the Precision Turbo. T76GTS-H

Which turbo is better for a... not daily driven car but driven a lot. Looking for good good power on Pumpgas. 600+whp and hopefully well over 800whp on racegas.

I have read a bunch on that T76. People love it! But why not the GT60r?
Old Jul 24, 2006 | 05:59 PM
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Re: Which turbo is better?

Size. The GT60r is a huge turbo.

Most compare the GT42 to the T76GTS. The GT42 has a larger exhaust side and is physically larger than the 76GTS. Due to the 74 mm compressor side of the 42, it won't support as much power either. However, upgrade the GT42 to a 76mm compressor wheel and you get the best of both worlds.

Mike
Old Jul 24, 2006 | 06:48 PM
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Re: Which turbo is better?

Originally Posted by engineermike
Size. The GT60r is a huge turbo.

Most compare the GT42 to the T76GTS. The GT42 has a larger exhaust side and is physically larger than the 76GTS. Due to the 74 mm compressor side of the 42, it won't support as much power either. However, upgrade the GT42 to a 76mm compressor wheel and you get the best of both worlds.

Mike
So much of a difference would it be to do that? Where could you get something like that done? Buying a GT42r but only the T76 wheel and then having someone do it?

That sounds like a good idea to me as long as it's cost effective! I just want 650whp (give or take) on pump gas and well over 800whp on C16.

Assuming that can even be done on a stock PCM
Old Jul 24, 2006 | 08:03 PM
  #4  
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Re: Which turbo is better?

They have them:

http://www.forcedinductions.com/productsgarrett.htm

T-76GTS - 1100-1150 fwhp
T-80GTS - 1200
GT42 standard (74 mm) - 1100
GT42 76mm - 1200
GT42 80mm - 1275
GT60 - 2200
Old Jul 24, 2006 | 08:12 PM
  #5  
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Re: Which turbo is better?

GT-42 80T

Thats what I want! :-)

That's physically bigger then a T76? I wonder how much bigger either are compared to a GT35r. My friend just got one and it's quite large as well.
Old Jul 24, 2006 | 09:07 PM
  #6  
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Re: Which turbo is better?

Originally Posted by ChrisUlrich
That's physically bigger then a T76? I wonder how much bigger either are compared to a GT35r. My friend just got one and it's quite large as well.
Yes, all of the GT42's are bigger than the T76-T80.

For instance, in axial length, the T76 is 8.75" long. The standard GT42 is 11.3" long. The diameter of the T76 compressor housing is 8.25", while the GT42 is ~11". The GT35 is smaller than both, at about 8.5" long and 7.5" dia.

Mike
Old Jul 25, 2006 | 04:25 AM
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Re: Which turbo is better?

Originally Posted by ChrisUlrich
GT-42 80T

Thats what I want! :-)


Why is it that you want that turbo when a T76 GTS will easily accomplish your goals, and is easier to package?
Old Jul 25, 2006 | 06:07 AM
  #8  
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Re: Which turbo is better?

Originally Posted by 5.0THIS
Why is it that you want that turbo when a T76 GTS will easily accomplish your goals, and is easier to package?
The ability to to do more when everything can handle it. If my motor can handle more power... then I will make more power. Savy?
Old Jul 25, 2006 | 08:06 AM
  #9  
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Re: Which turbo is better?

I think you're going to find it significantly more challenging to fit a GT42 than a T76. My T-76 barely fits - another 1/2" in diameter and it would hit. Add 2" in every direction and it won't fit many places.

Mike
Old Jul 26, 2006 | 05:14 AM
  #10  
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Re: Which turbo is better?

Originally Posted by ChrisUlrich
The ability to to do more when everything can handle it. If my motor can handle more power... then I will make more power. Savy?

So you really think you're going to be making more power than a 76GTS can support?? Come on man, be realistic. Everybody has that pipe dream, and 99% of those people never get anywhere near there. When you get to 950rwhp and it isnt enough, you can call me a liar.
Old Jul 26, 2006 | 05:57 AM
  #11  
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Re: Which turbo is better?

Originally Posted by 5.0THIS
So you really think you're going to be making more power than a 76GTS can support?? ...When you get to 950rwhp and it isnt enough, you can call me a liar.
Yep, the T76GTS is alot of power in a small package. It's been proven to 990 rwhp in 3 cars that I know of.

Mike
Old Jul 26, 2006 | 11:16 AM
  #12  
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Re: Which turbo is better?

Stick with a 76GTS. Like mentioned,size and power with that unit is hard to beat. We sell alot of them due to those vert same attributes.

Jose
Old Jul 26, 2006 | 02:37 PM
  #13  
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Re: Which turbo is better?

Originally Posted by 5.0THIS
So you really think you're going to be making more power than a 76GTS can support?? Come on man, be realistic. Everybody has that pipe dream, and 99% of those people never get anywhere near there. When you get to 950rwhp and it isnt enough, you can call me a liar.
I hear what you're saying but... the bottom end that I am going with should have no problem hitting over 1000whp. So I figured as long as I can get the top end to make the power... the bottom end is the limit.

I basically want a mid 140s trapping car to drive on the street. The faster the better after that point but I want at least that. Don't think i'll be hitting on that on the street. haha But I do drive it a lot.
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