I brought my 1978 Opel Kadett back from Europe a few years ago with the intent to do a V6 and 5 spd swap. I din't do ant work for about a year but gathered parts and did some research. I got a lot of great information and advice from folks on this site but then got to spend some time overseas so the project sat again for a while. Now I finally got around to actually doing some work.
For the engine, I bought a 3100 out of an 01 (I think) Grand Am that was running in a sand rail using a 7727 ECU. In the rail, the engine was bare bones- alternator only, no PS, no AC, manual trans which is how I'll run it in my car. The upeer and lower intake are reversed and I'm using a RWD tining cover and water pump. The wire harness was stripped down to only the required switches/sensor/etc but the harness needed some cleanup.
Before I finish the harness, I want to make sure I have all the required connections and sensors. It is is my understanding that the 7727 ECU does not use a cam position sensor so I can remove that from the harness. One thing that does concern me is the cam position sensor (just behind water pump with red green and black wires) connector is different from the connector in the harness (see pic of connector in hand with pink/black and black wires). I assume this is because I am mixing cars/years/ECUs but would appreciate clarification from one of the experts on this board.
Question 2- Does the 7727 ECU require the oil pressure sensor (lower front/left side of block near the knock sensor)? If not, I'll use that port for my oil pressure gauge sender.
3. What wires from the 7727 control the fuel pump relay/provide power to the fuel for prime and run? I'll be using an external Walbro pump.
4. What is the connector in the second pic? I assume it is a diagnostic port to read codes but would like to confirm
Thanks again for any help.
For the engine, I bought a 3100 out of an 01 (I think) Grand Am that was running in a sand rail using a 7727 ECU. In the rail, the engine was bare bones- alternator only, no PS, no AC, manual trans which is how I'll run it in my car. The upeer and lower intake are reversed and I'm using a RWD tining cover and water pump. The wire harness was stripped down to only the required switches/sensor/etc but the harness needed some cleanup.
Before I finish the harness, I want to make sure I have all the required connections and sensors. It is is my understanding that the 7727 ECU does not use a cam position sensor so I can remove that from the harness. One thing that does concern me is the cam position sensor (just behind water pump with red green and black wires) connector is different from the connector in the harness (see pic of connector in hand with pink/black and black wires). I assume this is because I am mixing cars/years/ECUs but would appreciate clarification from one of the experts on this board.
Question 2- Does the 7727 ECU require the oil pressure sensor (lower front/left side of block near the knock sensor)? If not, I'll use that port for my oil pressure gauge sender.
3. What wires from the 7727 control the fuel pump relay/provide power to the fuel for prime and run? I'll be using an external Walbro pump.
4. What is the connector in the second pic? I assume it is a diagnostic port to read codes but would like to confirm
Thanks again for any help.
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