CIS Conversion on 2056, Rebuilt 2.0 with CIS Options

[Dion]

[attachmentid=271
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As stated in earlier thread:

2.0 case, 96mm Je pistons, AA cylinders, "fat" performance cam 413 lift,258 duration, Melling oil pump, 009 distributor with Mallory electronic sensor.

CIS: VW Golf/Rabbit GTI Air/fuel meter box,Porsche 911 fuel accumulator,Bosch VW
warmup regulator(WUR), Bosch cold start valve, VW bus plenum and throttle body.
Injectors(#?), Fram fuel filters (one pre pump,one pre fuel meter), Bosch Fuel pump from Mercedes 300 series(as I was told,prob. good for any CIS auto from the 80's).

Thanks to Dave Toppin good friend(through all this) and mechanically inclined!

Thanks to Steve Limbert who inspected case and crank.

Thanks to Bill Boys(Possum Hollow Motorsports) who sorted out some bugs with the CIS.

The CIS is based on a design by Gary Miller and Ed Viella.
PS the flares are steel. Cheers,Dion

[jaxdream]

Can you provide more details , as in the fuel sump / pump setup ?? Any list of sourced part numbers ?? Another fella posted recently about converting to the CIS / K Jetronic setup , no feedback yet. How about performance , fuel economy ( especially sought after in these fuel times ) drivability , idle ,off idle capqabilitiess .
I for one am very interested , others maybe also . Please more pics and descriptions.

Thanks ....

Jack

[Dion]

Hey Jack,

The basic kit came from Gary Miller, I got it second hand from a friend about 4yrs ago before finally being installed recently.
Here is what I have:
Improved driveability over the tired Djet. You can feel the increased response. The torque is there. It idles smooth at 900 to 1000rpm. Fuel eco? Put it this way, even with spirited driving I don't visit the pumps too often. It sounds nice and throaty too,not quite as nice as a six... It is not sluggish.
I hope to get hold of a gtech for what it is worth,but will have it dyno'd.
On paper with the mods were expecting 120HP-130? at the flywheel.
Parts: Fuel pumpBosch #69430,WUR #0438-140-011,Inj. #0437-502-015,Fram filter
G371,Rabbit airduct 067-133-357and 067133373, Airequip and other Co.'s Fuel lines need to be rated for 250psi working rate. The meter is from G1 or G2 VW. Pick up a Bosch Management book for details on the CIS setups it proved very valuable.
Hope this helps a little.
Cheers Dion

Will add more pix soon...

[Dion]

[attachmentid=271
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[skota]

very interesting, I managed to keep a CIS setup from a GTI I parted out years ago. somethign to keep in mind. (IMG:style_emoticons/default/beerchug.gif)

[Rex-n-effect]

Nice job!!! Have not seen one of those CO adjusting plugs in a long time.

[jaxdream]

Thanks Dion for the fast reply. Yes I have the book (IMG:style_emoticons/default/aktion035.gif) , been reading the heck out of it lately .Read from the STF about some of the VW guys using this conversion with good reports , also checked out websites related to this mod, Gary's seems to be unavailable for info, just haven't contacted the sand people. The engine I plan on using came with dual 40 IDF's , will rebuild them and use first , when the engine goes in , but am planning on sourcing this setup . The only parts that I have for OEM FI is a set of intake runners , no other parts . The sourcing of this setup would probably be a little less $$$ and easier at this point , no ECU stuff to debug . Thanks again , glad to see someone else posting this conversion and doing the pioneering for some of us .

Thanks...

Jack

[Cap'n Krusty]

Not one picture shows the injectors and how they're installed. Pix, please?

The Cap'n

[SUNAB914]

Very pretty set up and clean engine bay.

[dlee6204]

Nice setup! (IMG:style_emoticons/default/thumb3d.gif) I currently have CIS on my stock 1.8L but plan on using it on my 2056 motor that I'm in the process of building. Please keep us updated if you get it dynoed. (IMG:style_emoticons/default/popcorn[1].gif) I too would be interested in seeing how the injectors are mounted.

[VaccaRabite]

Not one picture shows the injectors and how they're installed. Pix, please?

The Cap'n

(IMG:style_emoticons/default/agree.gif)
Zach

[Dion]

[attachmentid=271
077]Here are the injector pix. Gary Miller welded the bungs on the bus plenum prior to my purchase. O-rings on and press them in. Sorry for some of the blurred pix camera would not focus.
Cheers,Dion

[jaxdream]

Nice and clean looking , personly I'd fab some sort of injector holder . I wouldn't want a high presure fuel squirter coming out because of a hiccup or backfire. Were they originaly secured in the donor vehicle ?? Thanks for the pics , blurry or not , gives an idea of how the setup is accomplished.

Jack

[Dion]

Hey Jack,

Good idea regarding securing injectors. I'm not sure how inj. were secured in the VW's. But as far as coming out... It took a decent amount of oomph to pop em' in.
Thanks again for lookin' in.

Cheers,Dion

[rick 918-S]

Nice work and nice write up. Thanks for sharing this.

[jaxdream]

No , Thank you for sharing the conversion pics and part numbers. the reason I asked about the secured injectors is that all the other conversions that I found online used some sort of injector clamp. The orings are to stop any vaccum leaks, but the injectors are high presure squiters not a lot different from D-Jet ,L- Jet and other presurized fuel injection and they have secured injectors .
Please post more when you can , also like I said before curious about your fuel sump / pump setup - location.
Great looking engine and 914 you have there , keep it going (IMG:style_emoticons/default/driving.gif) !!

Jack

[kerensky]

Good idea regarding securing injectors. I'm not sure how inj. were secured in the VW's. But as far as coming out... It took a decent amount of oomph to pop em' in.
Thanks again for lookin' in.

Stock CIS injectors are just held in by the O-rings, but they are *in there*. Takes a heck of a lot of effort to pull them out, even with dry, cracked O-rings that leak air all day.

Really clean setup. It's somewhat tempting to me, since I've been futzing with CIS since buying a VW Fox 22 years ago (I still own and mod it). Any particular reason for going CIS versus a standalone system like Megasquirt? Note that "Just because" is an acceptable reason to me. (IMG:style_emoticons/default/wink.gif)

[Dion]

Jack here is the fuel pump pix. The pump in front trunk secured to wheel well. Fuel lines entering under tank. One filter secured under steering rack. You can see in the one pic peering out from panel. There is no movemnet near this bellows so it became an easy spot to secure it. Did not want too much equipment in the spare well. I have yet to make a little"cage" to put around the pump. My bud Dave is a fabricator, he has some ideas and access to some cool metal materials.

Kerensky: I'm cheap. This was an economical? build. So to speak. The CIS seemed to be well proven on factory cars. Not to mention another bud of mine John I. has a turbo'd CIS car. His car has ran well. All these parts can be had at NAPA or a FLAPS,
and salvage yards. I wasn't building a race or "killer" car just a dependable nice driver. Thanks for the info on the Injector securing.

Cheers,Dion

[davesprinkle]

The intent of a standard injector clamp is to keep the fuel line on the injector. The high fuel pressure would blow off the line otherwise. But on the CIS injectors, the line is threaded into the injector, so the clamp isn't needed.

The injector tip needs to be sealed into the plenum to prevent air leaks, but remember that on a normally-aspirated car, the plenum pressure will always be less than atmospheric, thus the car is always trying to suck the injector into the engine.

To sum up -- you're OK without injector clamps on a CIS injector.

[jaxdream]

Thanks Dion. So essentialy you're not using two fuel pumps to get fuel from the tank to the distributor. Most of the OEM Rabbit setups have a pump in the tank to pump to a sump , then the main pump draws on the sump to send presurized fuel to the front engine compartment to a fuel filter / distributor , if I am correct in comprehending the system . Thanks for the pics , so others say that the injector clamp isn't needed. Ok .

Jack