17-11-2012, 12:38 AM
Doesn't quite work like that... It doesn't give you extra advance overall, just shoves more on at idle...
The solenoid fronted pumps have a different dynamic timing system which feeds pressure from the governor, so that the advance system is load dependant rather than linear with engine RPM like the capped pumps... I.e. when you lift off the throttle the advance comes off, and at light load... If you were to watch the IPP with a solenoid pump, when you bash the throttle, the IPP jumps up, giving it more advance, and when you lift, the pressure drops.
The solenoid just allows you to give it a touch more advance for cold start, I wouldn't recommend leaving it on... In honesty, just leave it alone, I run a solenoid fronted pump and haven't had an issue with starting in the 3 years I've had the pump on
There's other issues if you have cold start problems.
The solenoid fronted pumps have a different dynamic timing system which feeds pressure from the governor, so that the advance system is load dependant rather than linear with engine RPM like the capped pumps... I.e. when you lift off the throttle the advance comes off, and at light load... If you were to watch the IPP with a solenoid pump, when you bash the throttle, the IPP jumps up, giving it more advance, and when you lift, the pressure drops.
The solenoid just allows you to give it a touch more advance for cold start, I wouldn't recommend leaving it on... In honesty, just leave it alone, I run a solenoid fronted pump and haven't had an issue with starting in the 3 years I've had the pump on
