Post by 3litrekiwi on Apr 19, 2020 9:30:03 GMT
My 3 litre has only run as well as I would like after a tune just prior to burning an exhaust valve. I've done everything I can think of with the carby and everything in the H/T system is new. I have added a vacuum port and bought a vacuum gauge and set the timing based on the reading however to get into the green I'm estimating the timing light is showing about 15 - 20 degrees btdc, not that comfortable with that and it is hard to get the idle under 900 rpm.
So the next step post lock down is to fit an electronic ignition kit or distributor. There is a local guy who sells the Acuspark kits and replacement dizzys so my plan is to fit one once I can visit him and he can also make a set of leads to suit. I thought it might be good to eliminate some joints in the system too and will change to a top entry cap with 90 degree connectors on the distributor and connect directly to the plugs with modern connectors.
The new leads won't fit into the tube fitted as standard so yesterday's project was to come up with something to replace it and keep everything tidy.
I'm quite pleased with the result, ironically the engine seems to be running better with this setup, I did replace two leads however I checked the resistance from the original set from the inside of the cap to the plug connectors and they were all around 0.5 ohms.
Something I wasn't aware of that I stumbled on when looking for the mounting blocks that I ended up making, was induced current from lead to lead in a bunched set of leads. Not sure whether this is an actual problem or a sales pitch but if it is, then the standard 3 litre setup seems like a prime candidate.
Cheers Martin
So the next step post lock down is to fit an electronic ignition kit or distributor. There is a local guy who sells the Acuspark kits and replacement dizzys so my plan is to fit one once I can visit him and he can also make a set of leads to suit. I thought it might be good to eliminate some joints in the system too and will change to a top entry cap with 90 degree connectors on the distributor and connect directly to the plugs with modern connectors.
The new leads won't fit into the tube fitted as standard so yesterday's project was to come up with something to replace it and keep everything tidy.
I'm quite pleased with the result, ironically the engine seems to be running better with this setup, I did replace two leads however I checked the resistance from the original set from the inside of the cap to the plug connectors and they were all around 0.5 ohms.
Something I wasn't aware of that I stumbled on when looking for the mounting blocks that I ended up making, was induced current from lead to lead in a bunched set of leads. Not sure whether this is an actual problem or a sales pitch but if it is, then the standard 3 litre setup seems like a prime candidate.
Cheers Martin