[urq] RE: [Es2] fuel pump

Buchholz, Steven Steven.Buchholz at kla-tencor.com
Mon Aug 9 17:26:29 EDT 2004


... the fuel system on the urQ should be able to supply whatever the new
motor needs on pressure, flow rate might be an issue.  IST quotes nominal
system pressure as 5.2-6.0 bar.  The pump is mounted outside the tank on the
ury.  Fortunately, the system pressure is determined by the FI system, so it
should auto-compensate when you do the engine swap.  For measuring pressure,
I have a fuel pressure gauge I've had for years ... as we saw on the Fox the
thing measures up to and beyond 10 bar.  You can get a pretty nice pressure
gauge/adapter set from JC Whitney.  

Steve B
San Jose, CA (USA)
> 
> Seeing this message, got me to thinking?
> 
> What kind of pressure does the original UrQ fuel pump create? How do I
> test the current pressure? Is the UrQ pump inside the tank as well?
> Do I need to replace to get the pressure necessary for a UrQ with a
> stock AAN motor and eventually an RS2ed motor? Haven't even considered
> fuel lines for this yet.
> I have the 93 S4 donor car I'm getting the AAN motor from with it's
> stock pump and housing I would guess (Haven't even ventured under the
> donor car in the area of the gas tank). Although I have sold the fuel
> lines to a casual friend's car that came from Qship, I 


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