Injectors and resistors

[Bruce Plecan]

-----Original Message-----
From: Richard Wakeling <kojab at ar.com.au>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, November 23, 1998 11:25 PM
Subject: Re: Injectors and resistors

How many injectors are you driving this way, with the 10 ohms?
Bruce


>Hi Steve,
> Use 10 ohm 10 watt with each 2.5 ohm injector. It will work but wont be
>as good peek n hold. The other possiblity is to fit an extra driver to
>the 808 and and get them to drive three injectors each peek n hold.
>Cheers Richard.
>
>PS My Toyota has been running 2.2 ohm 750cc/min with 10 ohms for over
>three years with delco 808. Idle was a bit tricky to tune.
>
>Steve Lamb wrote:
>>
>> I need the assistance of and EE......
>>
>> My next major project is to get an 808 ecm to drive a Nissan VG30DET
>> engine.  This a 3L Quad Cam 24V single turbo engine.  We believe we can
>> solve the main hardware issues to overcome (TB's and ignition system),
but
>> one issue remains a thorny one...low impedance injectors (6, to be
exact).
>>
>> I'm reliably informed that the 808 will not drive 6 low impedance
>> injectors.  One alternative would be to change the injectors, but this
>> would add quite a bit to the cost.  Another possible alternative is to
try
>> what Nissan did with its early L-Jet based systems......use a resistor in
>> series with each injector and thereby increase the total load (?) seen by
>> the injector driver.
>>
>> Can anyone see why an 808 ecm would or wouldn't work when used in this
way
>> ??   I was thinking of using 6 Ohm resistors, which is what Nissan use in
>> conjunction with their 2.5 Ohm injectors.
>>
>> Thanks
>>
>> Steve Lamb
>> Department of Defence, DSTO
>> Aeronautical and Maritime Research Laboratory
>> 506 Lorimer Street
>> Fishermans Bend  VIC 3207 Australia
>>
>> Tel: +61 3 9626 7525
>> Fax: +61 3 9626 7089
>>
>> IZCC #180
>