[alfa] Re: Spica injector numbering

[f.rastinejad@xxxxxxx]

In regards to injector numbering on the Spica cars, I venture to guess it is due to the need to precisely match fuel delivery 
for all four cylinders using injectors that may not be so precise.  The injectors would be matched to the pump during 
manufacturing/testing, and the pump cylinder liners would be adjusted to give even fuel delivery from all four injectors.  The 
injectors would then be numbered so they can be replaced correctly if ever removed.

Note that this may explain why Wes has been quoted as saying that factory pumps can vary in their fuel delivery across the 
four cylindres by more than 10%.  It may have been dialed that way to match the variability of the original injectors.  I would 
hope that Wes's pumps are sold with matching injectors.  I think the old Alfa replacement pumps came without matched 
injectors.

On a related note, may of the Spica pumps that leak fuel into oil may not have worn piston/liners as I have seen explained 
on this forum.  There is a copper washer seal under each cylinder of the pump and if the pump nozzles are allowed to loosen 
up (which happens if the locking rings are missing), the cylinders can move and compromise the copper seal and allow fuel 
into oil.  I have fixed a couple of pumps that leaked fuel into oil by just tightening the nozzles on top of the pump.  I have 
tried to find replacement copper washers without luck due to their non-standard dimentions.  I suppose one can make these 
with the right tool.

I look forward for some hypothesis on the offset injection tips- I don't have a good guess on that one!   -Farzan
> Good grief Charley Brown's out there. Who in their right mind would
> announce an Alfa fraud with a reading room of approximately 2000
> Alfisti. Didn't my, "Now that I have your attention" sort of give it
> away?
> 
> If you're still not convinced, then yes, I Really, Really do own all
> those companies who I name when posting - DuPont, 3M, JB Weld, etc.
> 
> Yesterday I'd been stripping down the engine (in question) peripherals
> to have prettied up and did have some (what I thought) were valid
> questions. Took a break, and emailed to what is apparently a
> considerably more serious group than I ever imagined.
> 
> Absolutely I would say it was a 2 liter when selling and exactly what
> I'd done to give the 'immediate' impression it is a 1750. Personally I
> think it is pretty cool to open a '69 Spider's hood, see a correct 1750
> air cleaner, inlet manifold, exhaust manifold, and have the benefits of
> a bit more torque - without modifying the engine. Note I even pointed

> out the visual key differences in knowing a 2000 from a 1750 (officer,
> we'll be parking our getaway car on 6th and Main around 3:45 pm).
> 
> Yeah, I could email Wes, but if someone's had Wes rebuild their complete
> system, including hardlines and nozzles, were they zinc plated? I'm
> convinced no one knows why the nozzles are numbered from 1 thru 4.
> Another thing I bet no one knows (certainly including me) is why the
> minuscule opening in the smaller outer portion of the nozzle is not
> centered, but offset.
> 
> Oh well, at least TJ (is it okay if I call you TJ, Tom?) included a
> happy face.
> 
> Biba
> Irwindale, CA USA
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