darrens
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| posted on 13/3/06 at 06:34 PM |
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Injectors
prob no the answer to this but is there anyway of testing injectors, I have a set that may or may not be anygood. Or is it worth buying a new lot.
Just to note I will be putting MS on the car so the initial fireup is going to be questionable, I don't really want dodgy injectors contributing
to problems.
Cheers
[Edited on 13/3/06 by darrens]
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muzchap
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| posted on 13/3/06 at 06:38 PM |
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A local tuning specialist to me recons them for about £20
They ultrasonic??? them - to get the spray patterns right and also flow test them - which is dead handy for a M$ - as you know the ACTUAL flow rates
to enter - not estimated ones 
If you want his number I can sort - he should do a postal service :-)
[Edited on 13/3/06 by muzchap]
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If you believe you're not crazy, whilst everybody is telling you, you are - then they are definitely wrong!
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darrens
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| posted on 13/3/06 at 06:42 PM |
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u2u sent, cheers
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Paul (Notts)
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| posted on 13/3/06 at 06:48 PM |
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darrens - what engine are you fitting ?
if RV8 then I would be very interested in ideas for megasquiritng it.
cheers
Paul
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mark chandler
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| posted on 13/3/06 at 09:10 PM |
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I tested my injectors by teeing an EFI fuel pump, fuel regulator and injector together, then pumped fuel around the circuit and applied a pulsed 12v
power supply (4 amp mains battery charger with only 1 diode so +ve sine wave only 50% of the time) which triggered the injector quite merrily.
By spraying the fuel into a measured glass container you can see the pattern.
Time the fuel delivery over a minute (I did not worry about flow rates, only that the injectors all supplied similar amounts of fuel over time) to
ensure they were all consistant and made sure when not pulsed they did not leak.
This weeded out a few bad'ns mostly pattern. I substituted the petrol with thinners mixed with fuel injector cleaner and ran these for a few
minutes which cleaned them up nicely.
Cost nothing, just be careful about fumes and sparks !
You only need a pint fuel tank and a big jam jar, as long as the injectors all similar the you are all right.
NB/ By inserting a pressure gauge before the regulator and pinching the return pipe I could force the injectors to start leaking at around 4.5bar,
before cleaning they wept at only 3 !
Now that is locost to £20 for ultrasonic each.
Regards Mark
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darrens
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| posted on 13/3/06 at 10:22 PM |
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quote:
Originally posted by Paul (Notts)
darrens - what engine are you fitting ?
if RV8 then I would be very interested in ideas for megasquiritng it.
cheers
Paul
I will be fitting 3.9 RV8 with various changes including CAM. I plan on getting the MS stuff within the next week cos I'm bursting to get the
thing fired up soon and plan on running spark and fuel control. Will keep you posted.
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darrens
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| posted on 13/3/06 at 10:24 PM |
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quote:
Originally posted by mark chandler
I tested my injectors by teeing an EFI fuel pump, fuel regulator and injector together, then pumped fuel around the circuit and applied a pulsed 12v
power supply (4 amp mains battery charger with only 1 diode so +ve sine wave only 50% of the time) which triggered the injector quite merrily.
Regards Mark
That's not a bad idea.
Cheers
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froggy
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| posted on 13/3/06 at 10:35 PM |
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i dont think youve got much faith in the stuff i sold you darren trust me its all sound!!!
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darrens
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| posted on 13/3/06 at 11:09 PM |
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quote:
Originally posted by froggy
i dont think youve got much faith in the stuff i sold you darren trust me its all sound!!!
that'll do then, on they go tomorrow
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