Author Topic: psi or bar?  (Read 6019 times)

Offline joesgti

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Re: psi or bar?
« Reply #15 on: April 14, 2009, 03:55:07 PM »
id have thought the KO3 would be more that the ED30 but looks exactly the same,

ps ive just had confirmation that the KO3 runs at 12psi std  :happy2:


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Offline SteveS

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Re: psi or bar?
« Reply #16 on: April 14, 2009, 03:58:05 PM »
shouldnt the ko4 be more?

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Offline joesgti

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Re: psi or bar?
« Reply #17 on: April 14, 2009, 04:00:40 PM »
i dont think so because its bigger, im sure john_o will be back soon  :laugh:


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Offline john_o

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Re: psi or bar?
« Reply #18 on: April 14, 2009, 04:27:01 PM »
values from the research Ive done are fine  :happy2:
Obviously depends on the map you have too. Be interesting to see what you get.
Youll be surprised how much in varies in different temps and conditions and petrol type (and for REVO Im assuming boost number)
Dont go chasing big peak psi numbers that aint the game  :grin:
(Also the vacuum side indicates how healthy your engine etc is)

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Offline SteveS

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Re: psi or bar?
« Reply #19 on: April 14, 2009, 04:27:55 PM »
oh i am :)

i didnt bring up the what psi should it be" question :p

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Offline john_o

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Re: psi or bar?
« Reply #20 on: April 14, 2009, 04:36:32 PM »
blaming Joe , I like your style Steve  :signLOL:
Always good to know these things for the sad intellectual types on this forum like me  :evilgrin:
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Offline SteveS

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Re: psi or bar?
« Reply #21 on: April 14, 2009, 04:39:50 PM »
 :signLOL:

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Offline SteveS

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Re: psi or bar?
« Reply #22 on: April 14, 2009, 04:52:55 PM »
Carl at revo thinks around: 1.3 - 1.4 bar = 20.3052833 PSI  :signLOL:

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Offline joesgti

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Re: psi or bar?
« Reply #23 on: April 14, 2009, 04:56:27 PM »
Carl at revo thinks around: 1.3 - 1.4 bar = 20.3052833 PSI  :signLOL:

 :signLOL:

that sounds about right  :happy2:


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Offline SteveS

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Re: psi or bar?
« Reply #24 on: April 14, 2009, 04:59:18 PM »
thats on a revo ed30 obv...

well when i eventually get mine fitted ill let you know! LOL, assuming there isnt an issue  :fighting:

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Offline ub7rm

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Re: psi or bar?
« Reply #25 on: April 14, 2009, 07:04:11 PM »
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
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Offline john_o

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Re: psi or bar?
« Reply #26 on: April 14, 2009, 07:20:18 PM »
Carl at revo thinks around: 1.3 - 1.4 bar = 20.3052833 PSI  :signLOL:
I was f**cking miles out then  ......... :P
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Offline KRL

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Re: psi or bar?
« Reply #27 on: April 14, 2009, 10:01:40 PM »
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.
« Last Edit: April 14, 2009, 10:04:14 PM by KRL »

Offline ub7rm

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Re: psi or bar?
« Reply #28 on: April 15, 2009, 08:22:44 AM »
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.....
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Offline cmdrfire

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Re: psi or bar?
« Reply #29 on: April 15, 2009, 12:34:35 PM »
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.