Fuel pressure gauge
Turbo Mini Forums

Just wondered which one is best, I have a 0-15 psi one in the dash but it's a bit rubbish and if I run high boost ( which I intend on doing ) its not high enough . I am trying to find a 0 - 30 psi one that is ideally oil filled to stop any wavering at certain pressures. Can't be one of those digital smoked ones as the car is open topped so it's impossible to read them .

Any ideas / pictures ?

its never a good idea to have a pressurised fuel line inside the car well i wouldnt like it if it burst all over me

Done now needs redoing lol

As above, It's never a good idea to route fuel lines like that inside the cabin.
Although if it was only a temporary measure then it shouldnt be the end of the world if done with good hose etc.
Definitely wouldnt do it as a permanent install.

And anywhere that does pneumatic parts, compressors etc, or just egay will sell any sort of pressure gauge you could ever want for very little money.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

You can buy a kit that transmits the fuel pressure from the fuel line, to the gauge without the fuel. Its basically a small device that has a diaphragm, you then fill the gauge and the gauge line with an oil or antifreeze and install this device on the end of the line. The device is then attached to the fuel line.

It keeps the fuel away from the cabin and keeps it where it needs to be kept

Thanks for the advise guys, as the car is a mini scamp it is very open and basic inside, as in you can see in to the engine bay ! With this in mind I got a double braded heat shielded line through the bulk head and in to the makeshift chequer plate dash ! , I really need to keep a good eye on the gauge as I know that the regulators can and do fail , I don't want to loose pressure when on full chat ! . I checked eBay but not sure how good the quality was on some of the gauges on there . I will try a local company that I got the hose from, they do all kinds of high pressure hose and stuff !

Cheers for the feedback

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

As I understood it if you have too low fuel pressure the mixture can lean off at boost ? I am sure I also read a thread on here about the regulators requiring adjustment as they can change after time and also fail. I know from personal experience I am on my second one , the first one was part of the spares when I first bought a turbo engine and that went after 8 months or so. But then it was out of use for an unknown number of years ! .

I never had any problems with mine during the years I used them.

And on a turbo carburettor car. If the fuel pressure drops below boost, the engine would simply stop, as strictly speaking it is not reliant on fuel pressure for fuel metering.
Only for a fuel supply to the carburettor.

fuel injection cars would be very different though, as they are reliant on fuel pressure and flow for actually metering the correct amount into the engine.

Buy a new regulator and it should last a very very long time.

Of course you can still install a gauge. But as with most gauges...if you are pushing the engine hard you really dont have time to watch gauges when you should be watching the road or track.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Or buy an AFR gauge, more expensive but you can do a lot more with the info displayed.

Dazed and Confused....

Got an AEM wide band one after I blew the head gasket

A real useful bit of kit !

I would be happy with an under bonnet one i have only ever looked at mine once and if you lost all fuel pressure the engine would eventualy stop anyway
Ive had a pump failure after it sucked in crap i would be more concerned about a good pre-pump filter

I drove my mini home from mitp this year with no boost referance on the fuel pressure reg ( or actuator ) just being carefull not be be on boost for long periods
Once you set the pressure and know it is rising with boost no need to keep an eye onit imo

Edited by Brett on 27th Aug, 2012.

Yes i moved to the darkside

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