k jetronic?

[mollins]

hi guys...

im thinking of installing a kjetronic (CIS) system as my stupid carby throws too much precious expensive fuel away... ive never worked with mechanical injection so i was wondering what you guys think of the system aand wether it will increase efficiency or power by much?

ive got:

manifold and throttle body with cold start valve
a fuel distributor/air flow meter
control pressure regulator

so i was wondering where i could pick up an electric fuel pump and accumulator as well as the thermoswitch

and which injectors are reccomended?

and am i missing anything?
thanks

mike

[glf-mk1]

hey mike, ive got a original mk1 with that mechnical injection system running. i love it. you can tune each cylender indevidually to raise the petrol or lean it out. it worked excellent with my 2l that i put in. but from what i know alot of ppl dont like that system..dunno y worked fine for me. so yea good luck with the conversion

[Golfwise]

You will need a FI fuel tank,fuel pump (new and not cheap at about $300+)accumulator,larger fuel lines from tank to motor and back,fi filter,
FI wiring harness with fuel pump relay,electronic ignition on top of what you've got.
Yes they work beautifully if done properly.

[Golf Loon]

The system is good when set up, and is a bit of an arse to set up.

Fuel Pressure Accumulator is the key, you can use a commodore VL fuel pump, as a cheapo option

It is very minimal wiring and doesnt need a computer.

Do you have the rubber inlet boot between the inlet manifold and the fuel dissy and what side of the inlet manifold is the throttle body?

[Golfwise]

Commodore fuel pump wouldn't produce enough pressure.

[82cab]

volvo does

[Golf Loon]

Commodore fuel pump wouldn't produce enough pressure.

I swopped one into a running kjet system and it ran the same, or slightly better.

[Golfwise]

Volvo is K jet

[syncro]

Volvo is K jet

VL is like Digifant.

The VL pump will pump the pressure but you are making it do something that it was not designed to do. Better off with Volvo, BMW or Audi.

I am not sure but I think the VL is designed for around 30-40 psi (same as Digifant/Motronic) and K-Jetronic is around 80 psi. Anyone know better?

[mollins]

haynes manual quotes kjet at 35-50 psi

i found a fuel pump amongst all the bits in my garage and it seemed to run fine when i connected it up to 12V... its a standard golf one so it should do fine

im just pricing the whole conversion as im a povo uni student... and i need to make sure i dont run out of cash half way through and end up with no car at all...

i dont have the rubber piping to connect the manifold to fuel dizzy so i was gonna check out clark rubber for other options... the manifold i have faces to the gearbox side of the engine but i have one that points the other way but i dunno if i have a throttle body for it.. therefore setting up the fuel dizzy on the other side was also an option..

just some extra questions...

what is the difference between FI tank and standard tank?
is electronic ignition necessary?... and if so, how is it set up and what extra components will i need?

where would be a good place to source parts like injectors, fuel pressure accumulator etc.? (i thought brian at galston maybe???)

thanks guys

mike

[TassieGTi]

K jet fuel pumps are very touchy.Second hand ones don't go for long so beware. :roll:

[roccodingo]

haynes manual quotes kjet at 35-50 psi

i found a fuel pump amongst all the bits in my garage and it seemed to run fine when i connected it up to 12V... its a standard golf one so it should do fine

im just pricing the whole conversion as im a povo uni student... and i need to make sure i dont run out of cash half way through and end up with no car at all...

i dont have the rubber piping to connect the manifold to fuel dizzy so i was gonna check out clark rubber for other options... the manifold i have faces to the gearbox side of the engine but i have one that points the other way but i dunno if i have a throttle body for it.. therefore setting up the fuel dizzy on the other side was also an option..

just some extra questions...

what is the difference between FI tank and standard tank?
is electronic ignition necessary?... and if so, how is it set up and what extra components will i need?

where would be a good place to source parts like injectors, fuel pressure accumulator etc.? (i thought brian at galston maybe???)

thanks guys

mike

System pressure can be up around the 80 PSI mark with a warm engine..

You can use a diesel tank ( identical) but not a carburettored tank, the plumbing is different sizes, FI recirculates the fuel at a much greater rate than the carby system. As for the rest of the components i can probably sell you a complete set up ( have at last count about 6 CIS sets ), as my stuff will soon be converted to megasquirt .

I can do you a complete electronic dizzy, control module, and coil with factory harness ( used it all last december to sort out a points ign so I know it works..) altho the early GTi's still had points distributors..

I have got a lot of bits from ebay motors in the states, the little bits cost bugger all and are cheap to mail out here..Its the things like manifolds and fuel tanks that cost a bomb..

Have plenty of info on hooking it all up and can send you a copy of the fuel section from a bentley, I have always found haynes manuals leave a bit to be desired when it comes to real data..

The best thing is once it's set up, it starts first crank and takes minimal maintenance, both the MAJOR reasons why i ditched carbies years ago..

[WABIT]

its mint... i have a k-jet gti engine and it goes good and efficient too

very happy with it

wabit

[Golf Loon]

Yeah i`m a fan too. A bit of an arse to setup, but idiotproof when going

[roccodingo]

Re: k jetronic?

hi guys...

im thinking of installing a kjetronic (CIS) system as my stupid carby throws too much precious expensive fuel away... ive never worked with mechanical injection so i was wondering what you guys think of the system aand wether it will increase efficiency or power by much?

ive got:

manifold and throttle body with cold start valve
a fuel distributor/air flow meter
control pressure regulator

so i was wondering where i could pick up an electric fuel pump and accumulator as well as the thermoswitch

and which injectors are reccomended?

and am i missing anything?
thanks

mike

One thing you will need to check is if your current head has injector ports !!, or do you have a manifold with injector holes ??