[alfa] RE: 164 up in flames

[Jon Pike <jhpike@xxxxxxx>]

> Are we sure SPICA is lower pressure?  I know a lot of the pressure 
> > comes from the SPICA injection pump, but I'd look up or measure the 
> > pressure upstream of the injection pump before assuming it's 
> > appreciably lower than that of Bosch EFI.  SAE 30R7 should be fine 
> > for carburetors, though.
>  
>
> The pressure into the Spica pump is 25 - 30 psi, IIRC.
>
> In the hard lines, it's much higher, as much as 200 psi, again, IIRC.
> The pressure from the pump opens the injectors.
>
> bs
I concur, and IIRC,  the flow is either 1/2, or even 2-3 gallons per 
minute.. lots of pressure and lots of flow, since the gas is acting as a 
coolant and lubricant for the pump.  The earlier quoted pressure is more 
like where the low fuel pressure warning light would be on.  (Wish I 
still had my 69 Berlina manual, which gave all these details)

Don't even think about using low pressure line!  You pop a hose,  you'll 
be spraying a lot of gas, fast!!
In fact,  I'd like to know sources for good quality line rated for these 
pressures.. all this talk about gas leaks is getting me itchy to replace 
everything soft while I have the car apart.

Another IIRC,  I either read in Wes Ingram's Spica Book, or heard him 
say at the 2001 convention,  that the injector side pressure is around 
350 psi.  They are basically passive relief valves with spray nozzles.

Jon and Marcia
77 Spider
Irvine, CA
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