SV: K Jetronic questions

[espen hilde]

Hi!
That was a new one! I would be impressed if you made this work.
Maybe somtimes it can be vise to bolt on a carb to test the output of the 
engine before you EFI it then you know approx how many hp you are going to 
get and are able to know what injectors /airdoor ++ you need.
Thanks
Espen

Brian Michalk [SMTP:michalk at awpi.com] skrev 21. mars 2001 04:02:
> Hi. I am new to this list, but have known about the DIY-EFI list for 
years.
>
> I am working on a 350cid slow turning engine that I am trying to make
> ultra-reliable.  I knew I wanted a high pressure fuel injection system, 
and
> the Bosch KE-Jetronic fit most of my requirements.
> 1) requires no electrics to run
> 2) High fuel pressure and excellent atomization.
>
> I have not yet started my engine.  I think I'm a few months away, but a
> friend of mine just put his engine on a dyno and was very disappointed 
with
> the results.  It appears as though a high overlap cam, together with that
> barn door AFS is too much of a restriction for the motor.
>
> I'm now re-thinking my strategy.  I want to use the system, but throw 
away
> the AFS.  My thought is to use a lead screw assembly on the fuel 
distributor
> for actuating the plunger.  The lead screw will be actuated from the
> throttle body shaft.  A 1" lead screw will travel .25 inches in 90 
degrees
> of rotation.  Or at least it is close.  The throttle body doesn't quite 
turn
> 90 degrees, and the plunger travel in the AFS is .21 inches.
>
> I plan on setting up the AFS to make the engine run reliably in the event 
of
> power failure.  But I also want to make it run efficiently, so I want to 
use
> the hot wire MAF, throttle position, and MAP data to fine tune the 
mixture
> via the mixture control built into the fuel distributor.
>
> Some questions:
> 1) On the distributor:  Is the fuel flow linear to plunger travel?
> 2) On the distributor, KE pressure actuator:  Can I adjust lean or rich
> using a bipolar (+/-) actuating signal?
> 3) On the distributor, KE pressure actuator:  How much will I be able to
> affect the fuel flow?
> 4) MAF: Where is the best place to buy one?
> 5) MAF: Is the output signal linear (they have PWM freq, and analog out) 
to
> mass air flow?
> 6) MAF: Do I really need the self cleaning module?  What are the
> requirements of that module?
> 7) distributor:  How much force is required to move the plunger when it 
is
> pumped up to its normal 80 psi?
>
>  Brian Michalk  <http://www.awpi.com/michalk>
> Life is what you make of it ... never wish you had done something.
> Aviator, experimental aircraft builder, motorcyclist, SCUBA diver
> musician, home-brewer, entrepreneur and SINGLE!
>
>
> 
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