Twin turbine TBI pump (was Suction through a unpowered Tank Pump.)

[CSH-HQ]

I'd suspect that only in a really large engine setup. and it would probably 
be diesel.
Bruce
>>I'm trying to figure out if this is a multi-motored/shafted, execusion, of
>>have a twin turbine pump, I've never seen such an animal.  On one of the gm
>>they used to little turbines blowing against each other but it didn't look
>>like anything trick
>>Bruce
>
>My thought--not having seen one, let alone apart, is that it has two
>stages, so as to get higher pressure. both first and second stage turbines
>would be mounted on the same shaft, one motor to drive. A
>"turbine"--otherwise know as a "side chamber" --type pump or blower will
>give a lot more pressure rise per stage than a regular centrifugal pump or
>fan.
>
>Greg
>>
>>>
>>>
>>>>I'm not sure of what your looking for but the twin turbine pumps were
>>>common
>>>>shaft and fixed, so I really dond't see the big deal.  Please clear up this
>>>>please.  The only ones I've had apart were gm tbi+ multi.
>>>>Bruce
>>>
>>>
>>>Clear up what??  Glad to see you back on line and in good spirits Bruce!
>>>
>>>Walt.
>>>
>>>
>>>
>>>
>>>>
>>>>
>>>>>>>
>>>>>>>(I'm looking for about 80 gallons per hour at maybe 3 or 5 psi from an
>>>>>>>in-tank pump.) (750 HP)
>>>>>>>
>>>>>>>Point is that 3 or 5 psi should be plenty to keep a vapor separator (and
>>>>>>>fuel accumulator) full and also to keep the HP pump well enough primed
>>>for
>>>>>>>it to stay free of any cavitation..
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>Greg, there are a number of aftermarket in-tank fuel pumps that will
>>>handle
>>>>>>such flow requirements.   One suitable candidate is the Holley 12-903
>>>(aka
>>>>>>the Walbro GSS346M).  This particular pump is of a gerotor design, so it
>>>is
>>>>>>relatively quiet.
>>>>>>
>>>>>>Any more progress on your project?
>>>>>
>>>>>Once I get the printing press to making those portraits of dead presidents
>>>>>in better quality, the project should pick up speed! :-)---but I think I
>>>>>may finally have found a pair of the twin plug heads for it!!
>>>>>
>>>>>Something tells me that shortening up the flame travel with that 4.685"
>>>>>bore might turn out to be a wonderful concept!
>>>>>
>>>>>I have a Walbro catalogue around, didn't realize they would flow that
>>>much.
>>>>>I shall check it again!
>>>>>
>>>>>Thanks--Greg
>>>>>>
>>>>>>Walt.
>>>>>
>>>>>
>>>
>
>