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Old 01-03-2011, 08:58 PM
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Gurunutkins Gurunutkins is offline
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Join Date: Oct 2005
Location: Seattle WA
Posts: 496
Hi Guys
I have a knack for expressing myself badly sometimes

I use a seafoam:kerosene blend to clean the injectors in the ultrasonic cleaner. I then run my system with kerosene through the injectors (and yes you can flush from the tip of the injector as well).
however our injectors are sized very large for our engines and horsepower so they run at very low pressure. the 036 injector for example is run at optimum spray pattern at 3 bars (43.5psi) yet our system runs at 28+psi. I find that if i run the system with anything other than gasoline at 30psi I get malformed spray patterns (and drips forming on the pintle caps) which throw out the calibration - so for the calibration step I run gasoline into graduated tubes. I tried with kerosene and kerosene diluted with spirits but had to run up to almost 50psi to get decent spray patterns.

I am hoping with the smaller nissan injectors in my M116 engine that I can push the pressure up to 40psi and get better spray patterns and atomization and hopefully push my power and economy up a little more. I currently run the 350 at 20mpg and the 450 at 17-18mpg but hope to get another 20% on that with the smaller injectors which should be easier to tune at higher pressures.

Graham and i used to chat quite a bit about what was possible with these systems - they can be refined quite a lot with more modern controllers - if you dont mind the franken merc concept . Jeffrey - bet you 50 cents that after reading the megasquirt manual for 30 minutes you would be building a system with no problems - its always the first step that is most difficult - as i remember Mike has his running on TBI's in just a few weekends.
I look forward to spending a bit more time on the forum again as i think my traveling days are over - i'll see what new employment brings and I may eventually get the time to convert this door stop into a MS monster with EDIS

cheers
Barri
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61 Austin mini
67 Lotus 7
74 450sl
76 Cadillac 8.2l (501 ci)

some new cars

megasquirt conversion on:
djet 74 450sl http://www.mercdjetmegasquirt.britautorepair.com/
cis 76 450sl http://www.merccismegasquirt.britautorepair.com/

the best view is always from the point of no return
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