According to Eaton’s website the say the max is 14000rpms, but I imagine that this is merely the efficiency limit of the charger since the stock pulley spins it that fast (a bit faster I think too…don’t have my notes at work).
Searching the org and I found a varied response to this question. One person said 15000rpm and another says 16000rpm. I know the 2.5 pulley spins it just past 16000rpm at 6200rpm and I know there are several here that run that pulley and the charger seems okay to spin that high (notwithstanding any heat soak or intake temp issues)
I am not worried about heat issues at this point, that I can deal with later. I’m just trying to figure out how fast it is safely capable of spinning. Can anyone confirm the maximum RPM that the GM s/c is capable of?
Thanks!
Snosh
i will say if you get the zzp rebuild kit you should be able to spin it more than the 14000 rpm's .being more reliable that the stock componets
The eaton # is based on continuous operation at that RPM.
Magnusson, the aftermarket division of Eaton, generally rates them a few k higher because they know it will only be at that rpm for a few seconds.
The issue is heat, but not air heat.
The rotors begin to heat up and expand at high rpms. Too high of an rpm for too long will cause the rotors to expand to the point of touching and that will instantly destroy the charger.
As RPM goes up, the time it can stay there drops drastically.
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So if you had one of those nitrous-spraying cryo-kit thingies shooting N2O at the outside of the blower, could you easily spin it at higher speeds?
the water/alchohol injection spraying through the charger apparently does a wonderous job of cooling so i'm hearing.
i use the alky injection , becuase you dont have the worries of nitrous (running lean)
plus it helps with detonation , and cleans the inside of the motor some
with WW's idea , it would kinda scare people seeing a mist getting sprayed like that , but it would help out some
[quote=97cavie24ls(JDM&00s/c sedans™)]
with WW's idea , it would kinda scare people seeing a mist getting sprayed like that , but it would help out some
They make the kits for spraying on intercoolers. This would just be a unique application...
need a evo style hood so they can see the spray show , LOL
it would be less messier than using ice
Protomec:
I understand what your saying.
I guess what Eaton is saying is that the 14000rpm is a "maximum". However, having said that the chargers are capable of spinning faster - since the stock pulley exceeds 14000rpm at 6200rpm and several people are runing smaller pulleys succesfully, I guess it is not recommend since prolong usuage above 14000rpms can increase the likely hood of the charger rotors touching and turning your charger into a 40lbs paper weight.
I guess what I am trying to determine is that if i run the 2.5" pulley (notwithstanding heat issues) at the track once in a blue moon, i won't blow my S/C to bits the first run just because its spining 16008 rpms at redline
Thanks!
Snosh
