Quote:
Originally Posted by 2forme
They are two entirely different kits. One makes max boost and holds it through the rev range....one makes max boost at 7400RPM....
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Ok, I'll bite:
there is a
little more to it, when you compare other salient features, with out turning this into a roots vs centri debate thread:
1-fuel injection needs to properly fuel either solutions differ, the two present different requirements at both stg1 and especially stg 2 implementations as far as fuel demands, blow off and surge management and subsequent limits build specs and costs that you might set for each. Stage2 at one solution is not equal to stage2 at another, it should be noted.
2-the way each systems reacts to throttle modulation,differs greatly between both systems, one is not
better than the other, but each has a
different 'character; if you will. I kno why I chose what i did and you should know why youre choosing what you want too. what will you drive like in snow? rain? when sideways?
3-the weight of each system and location of that weight differs, tho not that significant to most buyers, it does impact things like upgradeability significantly.
4-there is a noteworthy difference in both when you look adiabatic efficiency, output charge temps, loaded boost latency, and parasitic drag when comparing centrifugal solution from Vortech vs this twin screw setup from innovate on a smaller motor like ours, especially as the given application's scaling increases.
5-Twin screws are typically used in low RPM applications because they give the full charge right off the line. Centrifugal Blowers will produce more top end power and tend to be very easy if not better on fuel consumption during normal driving conditions.
6-There are a few major issues why OEM installs are shying away from Roots type blowers. To the best of my knowledge there has never been a twin-screw unit used in an OEM application, it is not even considered as one of the competitive designs when you look at the oem marketplace for sports and super cars, money no object.
8-twin screws are all real loud and typically trade off lower end for top end to some extent, many who have them share that they don't make good top end power as stated.But as far as getting that pinned to your seat feeling at lower rpms, its prolly the way to go. if you wan that power at redline, it may not be.
9- Factually speaking:The centrifugal unit is also an OEM unit just like the Eatons were for TRD back in the day. Toyota (TRD) have kicked Eaton to the sideline in 2004 favor of Vortech as their supplier for other systems/current applications. This is not solely cost driven. This means these centri's will be EPA approved. Vortech have cast TRDs name onto their units and designed kits for them in the past. This is public knowledge on the interweb, since 2005 btw.
10-Centrifugal units can run 20 psi with approx 20hp draw. Eaton units become very inefficient when attempting over 10psi and draw upwards of over 40hp at that point on a like for like application.This info is direct from their respective manufacturers.
while it is low on my list lastly...
11-roots units, cause higher emissions than centrifugal units, because of load being more constant on them given their design.