Thanks for the title idea Des
I've been steadily preparing my 6.3 for the M-100 Rally in September, we are driving back from Adelaide after transporting the cars, and ourselves in a first class cabin, on the train from Sydney.
My first priority was to try and improve my fuel economy so I started with the basics on a MFI car, or any car for that matter, the ignition. Checked the timing with vacumn advance disconnected at idle, 1500 and 3000 rpm which was all on spec. Changed the plugs to new W8DC. The leads, plug caps, distributer cap and rotor are all new 2 weeks ago.
Next job was the linkage the controls the operation of the throttle body and fuel injection pump. The relationship of the degrees of rotation of the throttle body and the pump linkages is not linear so I used a method RonB came up with and attached a protractor to the throttle body lever, fabricated a pointer from coat hanger wire, and by adjusting the length of the linkages at the ball ends I was able to set the angles as per the book, for example 2.5 degrees on the throttle = 4-4.5 degrees on the pump, 7.5 = 11.5-12.5, 20 = 29-30. You get the idea.
This done I soon realised my warm up device was not operating correctly, the tube that holds the wax thermostat was blocked with coolant junk stopping the flow of coolant that heats the thermostat shutting of the additional air and fuel supplied to the pump. I replaced the housing and wax thermostat from a spare pump I have then changed the oil in the injection pump as the rich running had diluted the oil in the govener, making it overfull and dripping oil into the valley of the engine.
All this in order I warmed the engine to operating temp and checked the Co2.
3.6 at idle in park, wheels chocked, and 0.6 at 1500 rpm in drive, again wheels chocked and foot HARD on the brake pedal. Again as per the book.
Finally to this morning we took off on my usual test run, down Windsor Road to Mcgraths Hill, right toward Pitt Town and through to Maroota, a 80k posted road almost completely made up of 35-55k corners and a favorite among motorcyclists, left down to Wisemans with plenty of sweeping corners until it tightens up for the final few 25 and 15 k hairpins at the end. I left the bike behind me working to keep up through this, granted it was a BMW...
A coffee at Wisemans and back up the same hill by leaving the 'box in 3rd I had the back end wanting to step out on the exit of the tighter corners as it simple charged up the hill. The engine was revving cleanly up to about 5000 rpm, any more is past peak power, and blowing no smoke.
Back home via Glenorie, Dural etc I was more than happy with the improvement in the tune and indications from the fuel guage and milage so far show better MPG.
I've been steadily preparing my 6.3 for the M-100 Rally in September, we are driving back from Adelaide after transporting the cars, and ourselves in a first class cabin
, on the train from Sydney.My first priority was to try and improve my fuel economy so I started with the basics on a MFI car, or any car for that matter, the ignition. Checked the timing with vacumn advance disconnected at idle, 1500 and 3000 rpm which was all on spec. Changed the plugs to new W8DC. The leads, plug caps, distributer cap and rotor are all new 2 weeks ago.
Next job was the linkage the controls the operation of the throttle body and fuel injection pump. The relationship of the degrees of rotation of the throttle body and the pump linkages is not linear so I used a method RonB came up with and attached a protractor to the throttle body lever, fabricated a pointer from coat hanger wire, and by adjusting the length of the linkages at the ball ends I was able to set the angles as per the book, for example 2.5 degrees on the throttle = 4-4.5 degrees on the pump, 7.5 = 11.5-12.5, 20 = 29-30. You get the idea.
This done I soon realised my warm up device was not operating correctly, the tube that holds the wax thermostat was blocked with coolant junk stopping the flow of coolant that heats the thermostat shutting of the additional air and fuel supplied to the pump. I replaced the housing and wax thermostat from a spare pump I have then changed the oil in the injection pump as the rich running had diluted the oil in the govener, making it overfull and dripping oil into the valley of the engine.
All this in order I warmed the engine to operating temp and checked the Co2.
3.6 at idle in park, wheels chocked, and 0.6 at 1500 rpm in drive, again wheels chocked and foot HARD on the brake pedal. Again as per the book.
Finally to this morning we took off on my usual test run, down Windsor Road to Mcgraths Hill, right toward Pitt Town and through to Maroota, a 80k posted road almost completely made up of 35-55k corners and a favorite among motorcyclists, left down to Wisemans with plenty of sweeping corners until it tightens up for the final few 25 and 15 k hairpins at the end. I left the bike behind me working to keep up through this, granted it was a BMW...
A coffee at Wisemans and back up the same hill by leaving the 'box in 3rd I had the back end wanting to step out on the exit of the tighter corners as it simple charged up the hill. The engine was revving cleanly up to about 5000 rpm, any more is past peak power, and blowing no smoke.
Back home via Glenorie, Dural etc I was more than happy with the improvement in the tune and indications from the fuel guage and milage so far show better MPG.
