Cam, Advice on #73 Options

[DavidSweden]

Stock engine 2.0 76 with stock D jet

I have searched the site and there seems to be mixed reviews regarding the Webcam #73 grind.

Is this cam god with the stock FI and will it just bolt in without the need to change the rocker geometry, or should I stick with the stock cam?

[emoze]

web 73 cam

- I ran one for several years in a 2.0 d-jet car with euro p&c's and a 4mm overbored intake

- loved it - great midrange improvement - excellent drivability

had to tune the d-jet by inserting an inline variable resistor in the HT circuit

plenty of info about d-jet & cams in the old 914Club archives

for example "First step when you think you have any FI problems: Check your ignition system. Timing, dwell, condition of components, all of it. What you describe sounds like two problems. First, the oscillation is known as a "lean hunt". Your idle mixture was too lean. Unplugging Temp Sensor I (the intake air temp sensor) richens up the mixture somewhat. I'd suggest plugging the sensor back in and using another method to richen the mixture. First, try the knob on the brain. This is used to change the idle mixture. Clockwise should make it richer. If this doesn't help, back the knob off about 8 clicks or so, then see if increasing the fuel pressure will do the trick. To increase the fuel pressure, you turn the bolt on the end of the fuel pressure regulator (left-rear corner of engine compartment, on a bracket sticking up from the engine tin). Loosen the jam nut first, clockwise to increase pressure. This will make the mixture richer. Note: It's a good idea to have a fuel pressure gauge hooked up when you do this, so you can see how much you're increasing the fuel pressure. Don't overdo it. ( <5 PSI change, at a guess.) Another method is to increase the resistance in the Temp Sensor II (head temp) circuit. Add a resistor or a potentiometer to the circuit where the sensor connects to the wiring harness. Some- thing on the order of 0-500 ohm, 1 watt will do. When you get the pot dialed to something that lets the engine run nicely, measure the resistance of the pot and substitute a fixed resistor of that value. That's because many potentiometers, when subjected to the heat and vibration found in a 914 engine compartment, will start to get flakey and really throw your mixture out the window." ~ author unknown - This email was cleaned by emailStripper,

CAVEAT - a '76 in California would have to be smogged - and above ideas may not result in passing emissions

[DavidSweden]

Thanks a lot for the information, I really appreciate the help. The procedure sounds pretty simple.

Yes the car was smogged but was all removed by PO and is currently in Gothenburg Sweden.

If anyone would like to add something regarding the FI please go ahead and help me out on this one.

Thanks again