Is a single gt4294 too much?

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Dec 10, 2007 | 10:51 PM

#61

Willem @ Fuel Injection Concepts

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Quote:

Originally Posted by hellbents10

Right on Kyle, pretty much any one with some cubes that has used a 42 or even a 47 chassis know they get backed up quick for their size.

because even the gt47 turbine is SMALL... PTE will tell you that themselves.. they strongly recommend NOT to run a 47 turbine on a motor with cubes unless you're running two..

Dec 11, 2007 | 07:12 AM

#62

70Stang

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Quote:

Originally Posted by DrTurbo

Our comp maps for the FI units are below.....

These are modified FI BWs that you sell correct?

Dec 11, 2007 | 10:26 AM

#63

DrTurbo

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Quote:

Originally Posted by 70Stang

These are modified FI BWs that you sell correct?

Correct they will be available in your normal sizes that will drop in to most PT, Turbonetics and ITS locations.

They will also be avialable with ball bearing, water cooling or non-water cooling, and all the typical A/R sizes and exhaust housings.

Dec 11, 2007 | 11:32 AM

#64

70Stang

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So, you take a BW unit and modify it to make those numbers.

Precision does the same thing the Garrett units, so isn't posting the GARRETT maps unfair?

Dec 11, 2007 | 11:37 AM

#65

DrTurbo

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Quote:

Originally Posted by 70Stang

So, you take a BW unit and modify it to make those numbers.

Precision does the same thing the Garrett units, so isn't posting the GARRETT maps unfair?

Not at all. It gives you a good foundation to build your setup on. Also wheel flow is not effected much unless you horrbily design a unit and impede flow. Most of the units we have tested only differ by small %, and some none at all. On some setups we actually flow more then the compressor maps derived since BW uses such small caudal spacing on the scrolls and small A/R's.

Dec 11, 2007 | 11:47 AM

#66

70Stang

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So, if there is no % gain from your unit and a stock BW, what is the advantage your units bring? Faster spool?

Dec 11, 2007 | 11:49 AM

#67

DrTurbo

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Quote:

Originally Posted by 70Stang

So, if there is no % gain from your unit and a stock BW, what is the advantage your units bring? Faster spool?

Faster spool better packaging, ball bearing, and yes more power since we are going to new turbine wheels. The BW turbine wheels don't flow as good.

Dec 11, 2007 | 11:57 AM

#68

hellbents10

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Wow there won't be much left of the BW unit after your done.

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Dec 11, 2007 | 11:58 AM

#69

DrTurbo

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Quote:

Originally Posted by hellbents10

Wow there won't be much left of the BW unit after your done.

LOL, there is alot left still as far as internals go.

Dec 11, 2007 | 11:58 AM

#70

70Stang

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Quote:

Originally Posted by DrTurbo

Faster spool better packaging, ball bearing, and yes more power since we are going to new turbine wheels. The BW turbine wheels don't flow as good.

So, what do you think Precision does with there wheels and housings?

The stock garrett maps you are posting should be compared to stock BW maps, not modified units vs. stock ones....Precision does the same things you do.

Dec 11, 2007 | 12:01 PM

#71

DrTurbo

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Quote:

Originally Posted by 70Stang

Those maps are the stock maps for the BW configurations

. We have been able to go beyond them with new setups.....

Dec 11, 2007 | 12:07 PM

#72

70Stang

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You just said they are the modified units not the stock ones.

Dec 11, 2007 | 12:12 PM

#73

DrTurbo

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Quote:

Originally Posted by 70Stang

You just said they are the modified units not the stock ones.

The FI units are modified, the maps are BW configurations though.

Dec 11, 2007 | 12:18 PM

#74

70Stang

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Ok, well that makes sense, kinda - so you modified units flow the same / less sometimes, but spool better and are packaged better?

Dec 11, 2007 | 12:31 PM

#75

DrTurbo

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Quote:

Originally Posted by 70Stang

Ok, well that makes sense, kinda - so you modified units flow the same / less sometimes, but spool better and are packaged better?

Correct, they flow less when we stick TO4B style covers on them on lets say a 62mm ETT wheel ....that hurts flow like it does with any compressor wheel from any manufacture. The wheels are not designed to be paired with such small housings.We are par with E-covers and beyond that we pick up power

. Also with the new turbine wheels we are able to recover some of the output and efficiency lost from the tiny covers we sometimes use like on the TTI X kits for the vettes.

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