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r34 stock boost gauge

charlieR34
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JimX Grand Master

JimX

Posted
Posted

If it's the same as R32 and R33 (which I think it is) then it's measured in 100's of millimetres of mercury. That means when it's at +7, the manifold pressure is at 13.5psi or so. The needle goes above 7 though, so you could probably make a semi-educated guess at the pressure up to 15 or 16psi or thereabouts. If you don't have an EBC and want to set your bleed valve, then you should probably install a decent quality boost gauge. At least temporarily.

ian Experienced

ian

Posted
Posted

Nope, it isn't measured like that on the R34.

As you would have noticed (see picture attached) the top of the dial is 1kg/cm^2, and the bottom is -700mmHg.

1 bar is 1.02 kg/CM^2, so that means the top of the gauge at 1 kg/cm^2 is .98 bar or 14.223psi.

1 bar is also 750.2838 mmHg, so the bottom of the gauge (-700mmHg) is -.93 bar or -13.528psi

Hope that helps!

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