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Boat Forum / Cruising / July 2006



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Mercruiser 5.7XL

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JBeck - 28 Jul 2006 03:57 GMT
Group:

I am considering adding a fuel transponder to my engine linked to my Navman
5500 chartplotter.  But, the tech info for the transponder says the minimum
fuel flow must be over 1.3 gph.  Can anyone tell me what the minimum fuel
flow for a Mercruiser 5.7L XL inboard is? TIA!
KLC Lewis - 28 Jul 2006 04:44 GMT
> Group:
>
[quoted text clipped - 4 lines]
> fuel flow must be over 1.3 gph.  Can anyone tell me what the minimum fuel
> flow for a Mercruiser 5.7L XL inboard is? TIA!

This is just a guess, but I think your engine burns more than that at idle.
Mike Harris - 28 Jul 2006 15:44 GMT
>> Group:
>>
[quoted text clipped - 7 lines]
> This is just a guess, but I think your engine burns more than that at
> idle.

LOL !  Probably right!

This engine is a marine version of Ford's 350 cu in / 5.7L V8, which might
be easier to find fuel flow data on.  In any case, even at trolling speed
you're likely using more than your transponder minimum.
--
Mike Harris
Austin, TX
Ron Knapik - 28 Jul 2006 15:57 GMT
5.7 350 is a GM.  The 351 5.8 is a ford.

> >> Group:
> >>
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> Mike Harris
> Austin, TX
Mike Harris - 31 Jul 2006 15:42 GMT
Ron,

I stand corrected - you're right, of course.

...which I might add doesn't change the fact that the fuel flow rates will
be comparable.
--
Mike Harris
Austin, TX

> 5.7 350 is a GM.  The 351 5.8 is a ford.
>
[quoted text clipped - 20 lines]
>> Mike Harris
>> Austin, TX
 
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