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Location:
Perth WA
Registered:
August 2003
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efi conversion for 18rg
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Tue, 30 September 2003 12:44
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Is it worthwhile converting an 18rgu to an 18rgeu and what would it cost and where would I get the parts?.
Just toying with the idea at the moment.
Would I be better sticking with the carbies. I would like to turbo at a later date so EFI would be the better option.
Cheers
Dave
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Location:
Brisbane
Registered:
May 2002
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Re: efi conversion for 18rg
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Tue, 30 September 2003 12:51
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Having done it a few years ago, I can tell you it's definitely worth it, and if you're going turbo you'd be crazy not to do it. Having said that, finding parts isn't easy and prices vary considerably due to lack of availablity. Good luck! 
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Location:
melb
Registered:
May 2002
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Re: efi conversion for 18rg
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Wed, 01 October 2003 07:02
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norbi - where was the improvement.
was it -
fuel econ - didnt think the ecu was that advanced - no ignition control and no closed loop eh?
power - I thought the twin side's would have flowed well.
torque etc.
just curious
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Location:
Brisbane
Registered:
May 2002
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Re: efi conversion for 18rg
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Wed, 01 October 2003 12:15
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Massive improvement in fuel economy - but that's not hard when we're comparing it with sidedraughts! No it's not very sophisticated but yes it does have closed loop. Top end power is much the same, and midrange/part throttle torque is HEAPS better. Overall it's much nicer to drive, especially when it's cold!
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Location:
Seattle area, USA
Registered:
June 2002
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Re: efi conversion for 18rg
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Thu, 02 October 2003 05:47
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use an Eletronic 18RGU or later Dizzy or convert yours from points. a 3T coil and 2 wire ignitor. 22RE ECU, AFM, 4age big port injectors, 18RGE intake. Then it's just wiring it up.
After i get settled i'll post up some scans of the analog 22RE ECU's and wiring diagrams. 
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Location:
Adelaide and Queenstown T...
Registered:
September 2002
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Re: efi conversion for 18rg
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Fri, 03 October 2003 03:00
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The 22RE wiring diagrams will be very helpful, when you can get them.
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Location:
Seattle area, USA
Registered:
June 2002
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Re: efi conversion for 18rg
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Fri, 03 October 2003 04:27
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Yea you will need an Ele ignitor. the signal is a general signal that Toyota uses. i've used several ignitors/coil/ Ele dizzy's with the 22RE ECU(analog ECU, controls fuel only). The ECU needs the ignitor signal in order to fire the injectors. they batch fire, all at the same time.
Do you have any relays wired up? you'll need alteast 3 that i can remember off the top of my head. The main relay and the Circut open relay, also a relay for the fuel pump.
Do you have spark, Fuel pressure?
I do remember that there are 3-4 wires from the ECU that need constant 12+v i think.. or was it switched 12+v. damn
The wiring diagrams wont be available until the End of the month, Sorry mate. 
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Location:
Adelaide and Queenstown T...
Registered:
September 2002
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Re: efi conversion for 18rg
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Fri, 03 October 2003 06:01
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ummmm, relays heeeyyy. i have just patched into the fuse box.
Sorry, I don't want to hijack this thread considering the other is going but what have you wired up the 22RE ECU to before wil8115??
I have a seperate fuel setup not controlled by the computer.
I have spark and fuel pressure.
Are you sure the normal coil doesn't give off the signal well enough?
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Location:
Brisbane
Registered:
May 2002
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Re: efi conversion for 18rg
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Fri, 03 October 2003 06:22
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A "normal" coil with a points dizzy will work just fine; I ran my 18R-GEU like this for a while. The only downside is the ignition starts to break down at high rpm, probably due to points bounce.
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Registered:
June 2002
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: efi conversion for 18rg
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Fri, 03 October 2003 08:16
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dont forget, that with pretty much any 4 cylinder electronic dizzy you can use pretty much any old school 4 cylinder coil+ignitor.
For instance i have a 18r dizzy, with 22r-e internals, and a 21r-c coil+ignitor.....
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Location:
Seattle area, USA
Registered:
June 2002
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Re: efi conversion for 18rg
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Sat, 04 October 2003 08:31
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| RA28midge wrote on Fri, 03 October 2003 16:01 |
ummmm, relays heeeyyy. i have just patched into the fuse box.
Sorry, I don't want to hijack this thread considering the other is going but what have you wired up the 22RE ECU to before wil8115??
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I've done several '79-85 Soild axle front 4x4 Hilux's, swapped from 20R's and 22R's to 22RE's. The carbs would get loaded up at step angles while wheelin'. We just used everything form running 22RE's so the parts were known to work and work together.
I'v heard of the points coil acting up when used with EFI but driving 4x4's with huge tires, lockers front and rear and geared really low(4.88:1 up to 6.29:1's) i'd hardly ever see 5000rpms or above. especially with "junk yard" 22RE's... LOL
I started a harness for my 18RGEU in my old 73 RA21 that i didn't get finished before packing up for the move.. It's not all that complex just takes a bit of time.
I talked to my friend he said come on over and scan whatever i'd like. So hopefully i'll get something this weekend.
The nice thing about wiring in everything with the ECU/relays, etc is when the power is on, so is everything, and when its off so is everything. the fump pump switch in the AFM comes in handy if your knocked out after an accident... 
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Registered:
June 2002
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Re: efi conversion for 18rg
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Mon, 06 October 2003 01:17
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| THE WITZL wrote on Fri, 03 October 2003 18:16 |
dont forget, that with pretty much any 4 cylinder electronic dizzy you can use pretty much any old school 4 cylinder coil+ignitor.
For instance i have a 18r dizzy, with 22r-e internals, and a 21r-c coil+ignitor.....
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In my experience with these systems that is not always the case yes they will work but at high revs I find that the old points coil will break down when matched with an electronic ignition.
I have also noticed that even a electronic coil that there can be a mis match between coil and ignitor giving a similar result. Best if you can use coil and ignitor from the same system.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: efi conversion for 18rg
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Mon, 06 October 2003 02:19
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well, not using an ignitor as such, but..
i have a jaycar HEI kit, and i have used it with a few different coils..
the Bosch GT40 (orange ones) die really quickly, but i have sucessfully used original KE10 coils (30+ years old), bosch stock oil filled points coils, and am currently using an Echlin stock replacement oil coil. i regularly see 8000rpm and have had no probs from coil breakdown or points flutter.
it also depends on the ignitor, since a fixed dwell at 8000rpm may not give long enough for the coil to charge (you only have 4ms between coil firing). the jaycar HEI has a fixed 1ms spark, and charges at all other times, but has a current limiter in it.
i find it works very well, and have a couple of elec dizzys (internal and external ignitor) with elec coils, that i will compare later this year... be interesting to see the difference if there is any..
Cya, Stewart
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Registered:
June 2002
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Re: efi conversion for 18rg
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Mon, 06 October 2003 04:09
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| oldcorollas wrote on Mon, 06 October 2003 12:19 |
it also depends on the ignitor, since a fixed dwell at 8000rpm may not give long enough for the coil to charge (you only have 4ms between coil firing).
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Well said this is my point ignitor and coil are designed to match. Therefore you are best to get them off the same system ie ignitor dwell matched to coil.
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