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A few more pics of Bosch bits:
http://www.aulro.com/afvb/attachment...1&d=1304133759
Last week's coil conversion on a 93 3.5 D1 mounted so the coil is upright.
http://www.aulro.com/afvb/attachment...1&d=1304133806
Test rig: 7AH SLA battery, coil, old dissy.
http://www.aulro.com/afvb/attachment...1&d=1304133822
Pulling a 15mm continuous spark off the coil by spinning the dissy with a battery drill. Adequate I think.
its all a bit beyond me!! anyone in melb want to help me do it?
Guys,
Have a 97 Disco 1.
Running on Lucas coil and what looks to be standard amplifier.
Please confirm if I am reading the threads properly.
On the '97 I can install a Bosch MEC717 coil
BIM 024 module.
I am running dual fuel.
The dissy and dissy cap? will need no direct work on them??
Let me know as power or economy are the concern for me.
After which I plan to look at tuning the ECU as is or piggy back a HALTEC Platinum.
Also what software can I run on windows 7 for tuning.
Linking the laptop is a small issue...software is different.
The conversion is suitable for vehicles using the standard dissy, rotor and cap. I built it especially because of issues I have met with dual fuel vehicles. With the correct plugs and leads you can run leaner mixtures safely for economy, and have a good spark for full power operation.Quote:
Originally Posted by cliffordbharvey
If you are going to programmable ignition you should maybe look at getting coil packs and a suitable ECU.
Hey thank you for that.
You mention coil packs and suitable ECU.
1. my objective is power for fuel use or efficiency. Is the Disco ECU capabale of providing this control? (tunable?)
2. coil packs and programable ECU...what recomendations are there?
I only have 12,000kms on the clock and do not wish to toake a path of engine modifications. Just make it run as best we can with the standard engine.
I am open to the fun here. Last time I was building engines ECU's were just starting. Left because I did not like computers...now live on them for work and play.
Cliff
120,000kms that is
Coil pack conversions aren't my scene. Someone else on the forum has done it. One other has done it and removed it again. Personally I stick to the KISS principle where possible. Dissy's aren't ever absolutely optimum but 10 degrees idle advance is pretty good on a standard dissy/engine combo. Google "megasquirt" if you want to know about aftermarket ECU stuff for tinkerers.
hi cliff,
i put edis on my disco and.....pulled it all off again. it involves putting a trigger wheel on the crank pulley and finding a way/spot to mount the coilpacks. all this stuff is quite easy to source out of the US. you then need an ecu to make it work. you mention haltech, i built my own megasquirt - got it from here :
Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products - DIYAutoTune.com
i didn't do fuel, only timing. had it all working with switchable timing maps which were automagically triggered when lpg came on. it was actually all working well and was great being able to play around with your timing curve whilst out driving.
as bee utey says the KISS principle has something going for it. bee utey installs a lot of mixer systems and uses closed loop with an oxygen sensor - i would highly recommend the closed loop for fuel control on a mixer system. i've got injected lpg and have installed the oem oxygen sensors being run by the 14cux as per PhilipA's tutorial on here to give fuel control.
the other thing i have also done it bee utey's bosch coil and amp conversion. once you have the parts i reckon a couple of hours and you are all done. it is noticeable the improvement and my ignition system was in good nick.
the BIG benefit i found was being able to control the timing. there is a huge difference between the timing curves for lpg and petrol. the motor in my disco is a HC 4.6 and it would fly on lpg with the correct timing curve. i've had te dissy regraphed for lpg now and it is set at 10 btdc to allow driving on petrol but the remainder of the curve is set up for lpg. it's nowhere near as quick of the mark now. you can get them regraphed purely for lpg too. i had it done by this mob :
Home
n.b. - i was chasing a fuel useage issue which wasn't resolved so pulled it all off again as it made it difficult to diagnose what was and wasn't working.
hth,
brett.
Brett,
I like some technical tinkering.
The Bee Utey aproach will be first on the list.
Quick and effective. I priced localy the Amp @ $96 and coil @ $99, more browsing required...any suggestions for Qld?
My system has a Romano vapour injection system. The Disco 1 has no oxygen sensor..so an open system.
2nd on the list is to get the laptop to hook up to both the Romano system and the Landrover ECU's. Get the necessary software to manipulate the mixtures/curves for LPG & fuel.
Small step 1 first.
I'll let ther forum know how things progress.
Currently getting 4.1km/L LPG (3km/L towing tandem trailer across the Aust Bight.)
5.2km/L fuel.
Thanks guys.
I apreciate this.
there is a thread on here by philipA detailing how to install oxy sensors. they came standard on the D1 in other markets. you can either get the NAS resistor or just pull out the aus spec resistor that's in there and by default it reads the NAS fuel map. this is what i've done on mine. that takes care of fuelling. obviously you need to install the oxygen sensors and the wiring loom.Quote:
Originally Posted by cliffordbharvey
i've got the software for my injected lpg. once you run closed loop there's really nothing to do. the only time you really need to play with fuelling is if you are running open loop (as you are now). you'll need something to give you the AF ratio otherwise you wont really know what the fuelling is doing.
i'm not into electronics at all but building the megasquirt was quite enjoyable. although i didn't do fuel it sure is an eye opener about all the decisions a vehicle ecu has to make based on the feedback from the engines sensors.
i reckon a good choice to start with the quick and easy one with the coil/amp conversion. can't remember what i paid for mine but those prices do seem a bit on the high side. although i got mine at repco when they had a 30% off sale on.
would be interested to hear what impact just the coil/amp has on your fuel use and engine performance.
best of luck with it.