sloanstavern
SILVER Star
Howdy – Continuing to refine timing valve and fuel adjustments on ’74 – 40 with an ’86 F2 running a Troll hole carb.
Just adjusted the valves and set the timing to the BB. The engine idles very nice and the power is fine, the only problem is, while warming up to normal range, I get a rattle or ping on hard acceleration under load. No ping if I just rev to 3,000 in neutral, but in gear at mid RPM's 1200-2000 if I stomp on it I hear a loud rattle / ping.
The first thing I thought was pre ignition and was ready to retard the timing a few ticks, but when it gets to full operating temp, it goes away.
Any ideas?
Thanks,
Just adjusted the valves and set the timing to the BB. The engine idles very nice and the power is fine, the only problem is, while warming up to normal range, I get a rattle or ping on hard acceleration under load. No ping if I just rev to 3,000 in neutral, but in gear at mid RPM's 1200-2000 if I stomp on it I hear a loud rattle / ping.
The first thing I thought was pre ignition and was ready to retard the timing a few ticks, but when it gets to full operating temp, it goes away.
Any ideas?
Thanks,