1987 omc 5.7. Jasper rebuild. Running 10 degrees btdc running mid grade fuel, 89 octane. is this within the correct spec? does having electric ignition over the old points change anything with timing?
No electronic ignition does not change your timing
I think this is way better then the old points and condenser
but would at this point go to a better stronger coil and better spark plug wires
No electronic ignition does not change your timing
I think this is way better then the old points and condenser
but would at this point go to a better stronger coil and better spark plug wires
not positive but i think i have the electronic conversion for the MALLORY YL670AV. i bought this coil from sierra linked below. the second link from blue streak is the old coil i replaced. how can i check compatibility ?
new coil uses a resistor. previous owner installed electronic upgrade im not sure on what mallory unit or anything exactly. are electronic upgrades compatible with the stock coils for these engines? the coil i got is a direct replacement from sierra
looks like its the 3rd one you linked. i dont see anything about specific coils. is the sierra one viable? shouldnt ignition work with all other stock parts? the sierra is a direct replacement for the engine so should it work?
tech specs i found online are as follow for the coil i bought. i could test one in boat aswell precisely . what do you think, wrong coil or should it be good? idk exactly what model mallory i have numbers are to faded on unit
Tech Info:
Primary Resistance: 1.25/1.38 Ohms
Secondary Resistance: 9,000/12,000 Ohms
I have a 1988 5.7 cobra combo and I am running at 3* BTC as prescribed by manual for running 87 Octane . Would that be wrong information from the manual ?
