Harvey,

As I understand it, average atmospheric pressure at sea level (or something) is generally taken as 14.7psi, but 1bar is still roughly 14.5psi. This is stated on the SI units standards site. I found the definitive answer to this one last time it came up, assuming you subscribe to using the same SI standard everyone else does!

Moray

[Edited by MorayMackenzie - 10/3/2002 8:47:07 PM]

 

can anyone provide a rough idea of how to convert psi to bar? wa sused to bar but new boost gauge reads psi, so very confused.

 

this the boost question week?

see previous threads m8

 

found it, cheers!

1psi= 0.6894757 bar.

 

14.5psi = 1bar

 

Dont want to split hairs but in the interests of accuracy 1 bar=14.7 psi.

 

Lets be spot on here.

1 bar gauge is 14.504 psi gauge

Craig Mac21

 

Blitz,

In fact 1psi = 0.06894757 bar so:

1 bar = 14.50377 psi

Matt

 

Well

If we use standard atmospheric pressure laid down in API 527
Which i have used every day over the last 14 years

Then 1 BarG IS 14.504 PsiG

 

Cheers Craig.

I wonder where the 14.7psi originated then? Maybe america has psi to go with there smaller horses.

Moray

 

In the interests of accuracy and to correct a mis-impression I possibly gave this evening I would agree that.
14.69595 psi is 1 atmosphere
14.50377 psi is 1 bar or 100 Kpa

Moray is right.

 

So, rounding down into easy to do in your head figures:

14.5 psi = 1 bar
14.7 psi = 1 atmosphere

excellent stuff.

Still think american horses are petit though!

[Edited by MorayMackenzie - 10/3/2002 11:45:44 PM]

 

Moray,Craig,Matt: I am happy to stand corrected and have no idea how I came to believe 1 bar was 14.7psi unless at some point years ago I wrongly assumed 1 bar and 1 atmosphere were the same.
Good job I do not work with high pressure vessels!!! although I calculate I have been over boosting the wagon by .32psi!!!
Thanks guys.

 

Great debate lads

We need a giggle don't we

Cheers

Craig Mac21

 

!!!

 

Very interesting but not very funny (for embarassed little me)
You learn something new every day but Iam not going to turn my boost down .32psi.
For the techies does this explain my latest phenominal rolling road figures!!!

 

ok ok ... i surrender.

having left this thread last week and re-read it 2nite, i must thank everyone for their extremely accurate input. *honest!*

a thought though, personally, when driving i go by 0.1 bar or 1psi
or does anyone use an accurate gauage to measure to smaller quantities, elec boost cont perhaps?

 

Don't you mean 1.450377 psi ?

lol

 

u the man bob!

just a took ownership of a link module from a friend, was told it was mapped by yourself. hopefully they work the same on my car or i'll have to make a visit to get it remapped again.

both type r version 4. btw, what's wrong with the car showing error code 51? comes on now and then for no reason but idling a bit funny though.

 

51= Neutral position switch abnormal.Never come across it before and not certain what it means.