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Aftermarket 4x4 Fuel Injection Conversion Kit

3K views 21 replies 9 participants last post by  GRW  
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#1 ·
Anyone know anything about the Aftermarket 4x4 Fuel Injection conversion kit? What is costs, what it comes with(or doesn't come with), performance, reliability, mpgs, ease of installation, etc.?????

!~pUG~!
 
#3 ·
Pug - I might be out of line on this, if so apologies, BUT..

I'm gonna be starting work on the Bosch CIS system for the 1300 sammy block within a week. should have a protoype system running in 3-4 weeks, maybe less if my test mule motor is in 'great' shape. ( havent seen it, but the price is right, and its supposed to be a runner) It'll be mechancial port FI, no computer, minimal wiring to hook up, and you can retain the stock gas tank. to keep prices down, I'm intending to go with some used parts, but it'll be a brand new custom manifold, and fittings. I can get the whole system with new parts too, but it'll be way more expensive...figured guys here would be more interested in a system they can build using cheap used parts that are easy to get.

anyway, the used parts route, I'm targeting $300-$500, depending on how much of the system I need to provide, and how much wrecking yard shopping you'd be willing to do on your end. oh, and for the record, I'll be testing every single component on my test mule first, so no worries about the used parts being dud's.

how quick did you say you needed to go FI? I'll be posting pics of my testbed setup once its running..let me know if you're interested.

chris
 
#5 ·
The system I'm planning on building is based around the Bosch CIS / K-Jetronic injection. it uses an air flap as the flow meter, and the flap pushes against a hydraulic plunger. hydraulic back pressure vs system line pressure is how injection volume is metered. temperature compensation is accounted for by varying line pressure, airflow by the varying pressure from the metering flap. I've built a number of 'one offs' previously for friends, and with no computer, and almost no electrical components, it works great in off roaders. there's some wiring required for the cold start system, but its basic, and will be documented with the kit..once its running, the ONLY item in the fuel system that needs power is the fuel pump, so its very stable in mud, and waterholes.

There are a couple of more advanced versions too CIS-E, and CIS w/ lambda, and I can build those too if requried for emmisions and/or high altitude operation I'll post specs on all three setups when I have photos of the test mule to back it up.

chris
 
#7 ·
wanderer4x4, you got my attention man. keep us informed as to how it comes along. what kind of parts are you talkin about us havin to find in the boneyards? gotta be something we can actually find down here. i love my boneyards, but it isnt gonna do me any good to spend a day there if the part im lookin for is like a hens tooth....
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if ya need a tester, ill volunteer my rig!!!!!
BiLLy bOb
 
#9 ·
link should work now. As usual, my other site has had a slightly more recent update ( but I'm almost always over my bandwidth restriction 8^P) http://www.geocities.com/wanderer4x4

re: parts donors - VW, Audi, Saab, Volvo, Mercedes, and BMW have all used the system in some models/years, so donors wouldnt be hard to locate. I've got a pretty good list of what parts come from EXACTLY which cars, so finding the right bits wont be a chore. ( and yes, its all been available in the US, in mainstream import cars) FWIW though, I have a line on a VERY good wholesaler...I'm currently trying to compile a price list for what an all new component system would cost through him.

chris
 
#10 ·
capn ( et al) I have a FIRM line on the motor right now - I plan to pick it up sat. THE big item I have to design, and prototype is the intake manifold, as it locates the injectors, throttle plate assembly, and airflow meter all in one unit. I'm trying to concentrate as many of the parts onto the manifold as possible, as it will make bolt-on conversions WAY easier. the prototype will be steel, but if I can get the gear, and make it strong enough, I 'hope' to be able to offer aluminum manifolds for it at a later date(again though, they'd be more expensive, as my cost would go up quite a bit to work it out of aluminum) . Once the manifold is done right, it really just needs fuel lines plumbing, and a switched 12V source to run the cold start circuit. this is why / how I can keep the costs down: if its JUST 1 part I have to fab, even if its complicated, my costs are low, and with a jig to work from, it doesnt take a stupid amount of time. good for me, good for you.

I'l post pics, and possibly an audio/video link once I get it running.

chris

 
#11 ·
EFI Kit? If you are talking about the EFI systems I have been selling then it is basically a Tracker/Kick TBI system converted over to work on a Sammy. Similar to the 1.6 16V conversion, but easier and cheaper. It is very similar to the stock 1.3 EFI system, but it can flow more air and more fuel for those of us with a lead foot! I have sold and installed several for people on this board and the Topica board...even for other vendors!
E-mail me if you need any info.

Sean DeVinney
aftermarket4x4@cox.net
 
#14 ·
GRW - the system can be tuned to handle the fuel requirements of up to about a 2.5 turbo motor, or 2.8 NA. I can & will provide tech advice on how to tune it for modified motors, but, honestly, if your fuel requirement's THAT different, I'd recommend that you come see me with it, and have me tune it for you, as very modified setups will require different injectors, etc.

chris
 
G
#16 ·
I had the CIS Lambda system on my Samurai for a while. worked well, but rather ugly to look at. No problems with bumpy roads, or crazy angles. Worked great until my engine decided to eat a couple of rings. I had this on my 1.8 VW engine I had swapped in. I then shipped most of my CIS stuff to a friend that is planning on installing it on his 12A rotary project.

This should be a pretty easy swap for just about anyone to do, and you should be able to modify the stock intake to fit the injectors, but best left to a good machine shop. You can get all of the needed parts from your local wrecking yard off an old VW or Volvo for next to nothing. These fuel injection systems were used on damn near every european car in the 80s. Even Proche.

Have fun..

-Wayne
 
#17 ·
Rotozuk, I am interested in any info on swapping a 1.8 vdub into my sammi. I have an 86 16v scirroco with a damn near new engine and a smoked tranny. I would love to put my rocket motor in my sammy. I am tired of replacing trannies in the rocco. The damn thing is on it's third transmission. The idiots who put a transmission designed for a car with half the horses into a car that will easily push 130mph were fools. I have cracked more trannie cases at the mount than I care to remember.
 
#19 ·
Yup, it was used on rabbits ( like I said, VW, Porshce, Audo, Mercedes, Volvo, Saab, BMW.)parts are available, cheap, and easy to deal with.

what I'm planning on building is a manifold system like the mercedes used, with the injectors, warm up regulator, throttle plates, fast idle air bypass, and air flap meter all attached to the manifold - makes for a neat, tidy install. all wiring predone, just mount the fuel pump in-line as per instructions, add a 12V switched source, and voila, instant multi point FI. I DONT plan on using the stock intake, as I specifically want to mount everythig to the manifold - thaty way the wiring can all be pre-done, and there wont be any issue swith 'where to mount' assorted components. I'll also be playing with the injector sizes for best efficiency on, and modifying the intake to a 2 1/2" round port, suitable for an oiled cotton filter, snorkle, or both.(still working out all the details in my head here)

$300-$500 is what I figured as a reasonable cost for rounding up the parts, building a custom manifold, and doing all the wiring to turn it into a bolt-on kit. I dont think I could do it and make any profit for less than that.

chris
 
#21 ·
whats the weight/load? I've already mentioned it on here, but once I get the 1300 test mule runngin CIS properly, I'll be re-working it to a 1300 FI turbo w/ intercooler - no idea what to expect out of that setup, but CIS turbocharges quite well ( and easilly) - so withthe intercooelr, I'm figuring in the 100-120 HP range. comfortably, mroe if the cam is well suited to turbo's. Thats quite a ways down the road though.

chris
 
#22 ·
I don't know yet, but it's a LWB that will be running dual rear seats for the kids. It will be SPOA with big 32's or 33's. If things don't pick up I may be swapping in the drive train from my SWB 1600 16V hybred front and rear axles with YJ's in the back and rears up frnt. The wife would like an auto in this one, so she can drive it to. If I do that I get to keep the SWB
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with the 16V/5spd in it. That works for me.
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