r33 standard boost reading

[akeenan]

im pretty sure I already know the answer to this however I will ask just to make sure...

on the r33(running standard boost) when your foot is to the floor, on the standard boost gauge where should the needle show a reading to? right up to the +7 or to the line which indicates approx 5.

yours anwers would be greatly appreciated. what does it show on your cars?

[GTS-t VSPEC]

Mine used to go up to the 7. The boost will vary on everyones Skyline depending on mods, even exhaust and air-filter will make a difference to boost. Everyone will give you a different value for the factory boost, aslong as you have no boost leak then I wouldn't worry too much, the gauge is only an indicator of on/off boost, not an accurate reading.

See'ya:burnout:

[XXE-R32]

Well b4 i got my afteremarket boost guage, the fatory readin would be just below the 7, but on the new boost guage it reads 11psi, so i really dont know

[akeenan]

yeah im just curious on peoples skylines that have no mods. 100% stock what theirs read

[hippy]

i got a boost leak .. only goes up to around 3.. gotta get it fixed soon

[Matt]

should be half way between 0 and +7 for a stock car. That's about 7psi.

[fade]

I have a 1996 S2 GTS-T.

100% stock except mags and suspension. When I picked it up from Gold Coast I got a mechanic to look at it. Had the timing belt and water pump changed, coils cleaned, plugs changed etc. It was also put on a computer so all data could be checked. As far as I am aware it is in 100% working order.

Anyway, my car will sit just below the line that is halfway between 0 & +7 up to 4500rpm then it will sit exactly on the line. You can feel it coming on hard at this stage.

For an explanation on the gauge go to (GENERAL AUTOMOTIVE DISCUSSION > correct me if im wrong)

[2rismo]

Just to allay any confusion, the factory boost gauge does NOT read in PSI or Bar. If you have a closer look, you'll notice that it is +/- 7 x 100mm Hg. (reading on gauge x 100mm Hg <-- Mercury).

1 lbf/square inch (PSI) = 51.71507 mm mercury (0 C)

10psi = 517.1507mm Hg or the position approximating 5 on your factory boost gauge.

In saying all of that though, the factory gauge is pretty innaccurate at best and should prob only be used as a guide. Hope this helps.

out of interest, if 1 bar = 14.503774 lbf/square inch (PSI), does having 7.251887psi mean you have 'half a bar'?

[Guest Oz Elitesport]

Half way b/w 0 and +7 on mine.

[akeenan]

thanks for all your answers, i was only interested in where the needle approx sits on everyone elses stock r33,

thanks 2rismo for you knowledge however i already know all this

thanks

[Ozzy]

I found the perfect pressure conversion chart...it covers all pressure standards.....i.e. standard meter +7 = (about) 13.5 psi, anyway it backs up all that is said in this thread. I have a laminated copy in the car for just those times when u ask...whats that in PSI (or in this case mmHg)

You can find it at http://www.aquaticam.com/presschart.html

[b2barker]

Just over half way