Ok, Here's what I have that I'm basing my questions on.
511c.i. BBC
13:1 compression (110 octane, leaded fuel only)
MSD 7AL with crank trigger
tunnel ram with duel 650? 850? carbs
Here's my questions.....
First question... the timing is currently set at 43degrees advance. The fella I bought the boat from told me when I purchased it that the timing was set conservatively. It runs fine, and idles fine, but I'm concerned about how far it's advanced. Should I retard it to something like 34 - 36 degrees?
That's a little high for my blood. I've heard of folks running up to 40 degrees but I think one of two things...
A. They were experimenting with different burn rates and successfully pulled it off. :idea:
or B. They didn't know what the hell they were doing but the motor loved it
I would imagine your motor survived at 43 degrees with a carefull process of perfectly dialing it in, since you claim it has run perfect for ya. It's gotta be hell on that starter if she's locked out...
Now, since you've adjusted the valves, I would seariously consider taking the timing back down for good measure since the initial settings were part of the 43 timing package he had tuned into it. What prompted you to reset the valves? Just routine maintenance?
Just make sure you run good gas.
~Ty