1strodeo":wawmma8a said:
Thanks Gene, I will definitely look into that adhesive.
So I started drilling into the log for the rear carb, and I guess I never noticed before but all the intake ports flow downward to the valves. Like #1 intake is about 30 degrees and #6 is I'm guessing nearly 60 degrees downward. I guess I always assumed these ports were more parallel? Anyway I think this is a job that should be done with the head removed, so it's on hold again!
Jeff
Untill you've spent real time "caresing the curves" of the log head, you just won't see how contorted the intake runners are. They were designed in late 1958, the casting locked in, even with alterations, for another 1/4 or a century till that last one was made for the 1983 Fairmont, Zephyr, and downsized LTD/Marquis.
Funny thing, even though thats the case, the Offy
really makes any stock log head honk. Two extra carbs remove 16" of contorted 80 bends, and power goes up not by air increased air flow, but by having the gasoline right to the door of six cylinders at wide open throttle.
The port shape at the ends to cylinder one is odd, at cylinder 6, the upturn , well, its like sending a rat down a drainpipe
Guys have been cutting off the log head for years, and finding that the early 1961-1962 170/200 heads had only 1.125 " diameter ports with 1 sq inch of port serving a 2.13 sq in 1.65" diameter valve head, or a port 47% of the valve area.
The later log heads, port size and area went up in two big buzz cuts, 1969, and then again to even more port area intakes in 1976, and those D6 onwards valve heads were now typically quite big inside.
Here is what a normal late model log head looks like inside.
a host of Americans, like
Fast64Ranchero,
JTTurbo,
Big Al the Hackmiester, who's tool of choice was the Sawzall, have taken these pictures.
Big log was a D8
Small log like the early ones
Experi Mental Frontal Log-otmy