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Whats' the pressure of a standard fuel pump?

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Old 26 October 2007, 08:10 AM
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ryn004
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Default Whats' the pressure of a standard fuel pump?

Whats' the pressure of a standard for a MY97 wrx fuel pump?
The reason I ask because I need to replace my fuel pump but I can only find the walbro 255. My engine is standard and will stay like that, so I just want to replace the pump. So if the standard one is of the same rating as teh walbro, I would get the walbro.
Old 26 October 2007, 12:24 PM
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bowsaaa
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The standard fpr is set at 3bar so no matter what pump you fit it will be 3bar unless you fit an adjustable fpr.
If its any good to you I have an uprated sytec pump which came as part of my mocom 555 kit, never used it as I already had 1 fitted. bnib £50.
Old 26 October 2007, 12:36 PM
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harvey
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As above, it is the fuel pressure regulator that controls pressure. The O/E FPR is non adjustable.
Fitting an uprated pump should allow a greater volume of fuel to flow.
Sytec pump/Walbro 255 lph pump, same thing.
Classic uses Walbro 341 pump and New Age to M/Y 05 as far as I know is either 343 or 342, cannot remember without looking in a file.
Both available from A.S. Performance and elsewhere for around £80 posted if the pump above is not suitable.
Older cars ie Classics, often have "tired" pumps because of their age so a replacement, on a hard driven or older car, even in standard form is not a bad thing.
Old 26 October 2007, 12:47 PM
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rafasheroes
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so for my 1995 wrx if i were to replace the pump it would be a walbro 341?
Old 26 October 2007, 12:49 PM
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Oui!!!
Old 26 October 2007, 12:53 PM
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rafasheroes
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Originally Posted by harvey
Oui!!!


monche tou
Old 26 October 2007, 01:00 PM
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Spelling error ? Je crois?
Old 26 October 2007, 01:06 PM
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rafasheroes
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Originally Posted by harvey
Spelling error ? Je crois?

these belgians
Old 26 October 2007, 02:11 PM
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ryn004
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Thanks but I think I'm going for the GSS341 Walbro.
Old 27 October 2007, 07:41 PM
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That's exactly what you need for a 97 WRX.
Old 27 October 2007, 08:26 PM
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kpkpkp
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Not to want to HiJack the thread but is it worth replacing the fuel pump in an 05 WRX STI Type UK - I will run around 320-340BHP when all done and was wondering about the pump.

Many thanks

Kp
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