Fp billet 7 blade vs garret gtx 11 blade compressor wheel? Which is better?

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Aug 24, 2013, 07:53 AM

#16

240Z TwinTurbo

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Quote:

Originally Posted by Grimgrak

just wish you tapped the true potential of the gt30 and gtx3576 before going bigger. If I can do 547whp at ER surely there is plenty more left in your setups.

I plan to make a few pulls at 36psi with the GTX3576r on 100 octane before swapping to the GTX3582r. BTW, I saw your results and that is impressive.

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Aug 24, 2013, 05:55 PM

#17

Grimgrak

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Quote:

Originally Posted by 240Z TwinTurbo

I plan to make a few pulls at 36psi with the GTX3576r on 100 octane before swapping to the GTX3582r. BTW, I saw your results and that is impressive.

Just to clarify your gt30 results were with a cat correct and the gt35 without?

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Oct 27, 2014, 05:12 AM

#18

94AWDcoupe

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Quote:

Originally Posted by Grimgrak

Just to clarify your gt30 results were with a cat correct and the gt35 without?

yes, that is correct. the switch from 3076 to 3576 included eliminating cat during the switch.

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Oct 27, 2014, 10:58 AM

#19

SWOLN

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Dial up?

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Oct 29, 2014, 02:55 PM

#20

BBoNZ

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Quote:

Originally Posted by SWOLN

Dial up?

Took me a minute, but LOL

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Dec 10, 2015, 06:51 PM

#21

Jaraxle

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Quote:

Originally Posted by riceball777

Fp uses the double billet 7 blade design and Garrett uses the new single 11 blade billet wheels. If both turbos were the same side which would is better? Makes more power? Spools faster?

Fp billet 7 blade vs garret gtx 11 blade compressor wheel? Which is better?

Fp hta gt3582r vs garret gtx3582r ?
Fp hta gt3076r vs Garrett gtx3076r

Great question. Let's just look at the 76mm guys. Both are 55-60 lb/min compressors. Comparing the BW 76mm compressor to the Garrett GTX 76mm compressor is one way to compare a 7+7 blade design to 11 blade design. I do not know how close the HTA compressor map really is to the BW 76mm map, but that's all we have so....

Looking at those two compressor maps:

BW 76mm:

and Garret GTX 76mm:

Running some numbers for 2.0 liter engine aiming for 26psi results in a pressure ratio of 2.94.

On the low end (3300rpm) the BW 7+7 wheel can support the flow and pressure (26psi) and the Garrett cannot (this doesn't mean it will for sure, but it can flow it). So on paper the BW wheel will perform better (low flow at higher PR and make more power down low). On the TOP end, the Garrett wheel is still in 76% to 73% efficiency at over 500hp while the BW wheel is dropping below 70% efficient (30% heat = less power).

So I think I am basically saying what someone else already did. The Garrett is a top end monster blade design and the 7+7 BW (and HTA) wheel design is better on the low end. I personally went with the 11 blade because of this. I figured making monster torque down low will just break something

, so I aimed for top end.

~Jaraxle

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Dec 12, 2015, 07:18 AM

#22

Evo8cy

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The basic characteristic difference of the two designs of equal proportions is the one you have mentioned. In reality though, the difference of the two is less than the one on paper.

Even if you chose the 7high-7low blade wheel while keeping the rest of the setup and map the same you would not brake anything. The most important factors in breaking stuff besides the way you launch/drive the car are, camshaft dialing, mapping and distribution of boost.

Marios