All Things Mk5 > How to Guides / Troubleshooting
psi or bar?
ub7rm:
PSI - imperial
Bar - SI units
1 bar = approx 10m head of water. So if you are 10m underwater you are subjected to 1 bar atmospheric pressure (approx - varies with the weather) and 1 bar hydrostatic. :rolleye:
Bar FTW
john_o:
--- Quote from: SteveS on April 14, 2009, 04:52:55 pm ---Carl at revo thinks around: 1.3 - 1.4 bar = 20.3052833 PSI :signLOL:
--- End quote ---
I was f**cking miles out then ......... :P
KRL:
The K03 and K04 will peek at roughly the same PSI - 20+ depending on map, conditions etc.
The difference between the K03 and K04 is that the K04 has a bigger turbine.
This means the K04 will spool a little slower (by slower read further down the rev range), therefore peak boost should be made a little earlier with the K03. Also due to the larger turbine the K04 will be able to hold its boost for longer through the rev range. So you should expect the K03 to be boosting at around 10 PSI at 6k rpm while the K04 will still be boosting around 17 PSI at 6k rpm.
ub7rm:
I imagine the critical thing about the bigger turbo is that it will shift a bigger VOLUME of air than the K03....
If I chucked a bucket of water over you from the top of a building it would hit you at a certain pressure. If I tipped a tanker of water on you from the same building the water would hit you with the same pressure. But you would be a lot wetter the second time round.....
cmdrfire:
We are not in the USA, so we should be using Bars. To those who are saying that the Bar is less "accurate" (you really mean precise, as accuracy is dependent on the gauge you are using), bar is far more precise than PSI is, as it can be broken down into centibars, millibars, etc. What do you break a pound per square inch into? Ounce per 3/8 inch?
As ub7rm says, Bar ftw. PSI is a relic of an outmoded and inefficent measurement system.
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