mike diesel
New member
- Joined
- Aug 7, 2012
- Messages
- 431
I am curious how much the exducer of the compressor can/will affect horsepower potential.
I just built a compound setup for my duramax using a billet 11 blade s472/87/1.0 as the secondary and a turbonetics custom Y2K as the primary. The turbonetics has a 101/112mm turbine and a billet 6 blade HPC 88mm compressor.
when researching what turbo I wanted to use as the primary, I was stuck on either a garrett gt4718 and this turbonetics. I ultimately went turbonetics because the turbine seems much better suited in a compound setup than the gt47 93mm turbine did.
The gt4718 is also 88mm but has a 118mm exducer with some billet wheels having 125mm extended tip. When my turbonetics showed up i pulled the compressor cover off expecting to see essentially the same wheel size as the gt4718 which was not the case. It seems like the turbonetics compressor cover has a ton of room that is not utilized. This HPC billet wheel has roughly 112mm exducer. It seems the compressor is cut short which makes the blade height at the exducer very tall.
1 advantage I see is the HPC wheel has less rotating mass but at the same time can't help but think the 112mm exducer is/can affect hp potential.
Would running the wheel down to 118mm+ exducer and having a short blade height flow more air than cutting it short at around 112mm with a much taller blade height? From my research, the HPC wheels don't seem to bad at moving air.
I just built a compound setup for my duramax using a billet 11 blade s472/87/1.0 as the secondary and a turbonetics custom Y2K as the primary. The turbonetics has a 101/112mm turbine and a billet 6 blade HPC 88mm compressor.
when researching what turbo I wanted to use as the primary, I was stuck on either a garrett gt4718 and this turbonetics. I ultimately went turbonetics because the turbine seems much better suited in a compound setup than the gt47 93mm turbine did.
The gt4718 is also 88mm but has a 118mm exducer with some billet wheels having 125mm extended tip. When my turbonetics showed up i pulled the compressor cover off expecting to see essentially the same wheel size as the gt4718 which was not the case. It seems like the turbonetics compressor cover has a ton of room that is not utilized. This HPC billet wheel has roughly 112mm exducer. It seems the compressor is cut short which makes the blade height at the exducer very tall.
1 advantage I see is the HPC wheel has less rotating mass but at the same time can't help but think the 112mm exducer is/can affect hp potential.
Would running the wheel down to 118mm+ exducer and having a short blade height flow more air than cutting it short at around 112mm with a much taller blade height? From my research, the HPC wheels don't seem to bad at moving air.
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