Thanks for the response guys, that’s kind of what I was out here trolling for. Just looking for what the general consciences was. Although it is kind of all over the place maybe if enough respondents call in we can get some real numbers as to what to expect.
Like I said earlier, I need to gather up more statistics before I can do an accurate mileage calculation on mine. A few partial tanks of fuel taint really enough to get an accurate number, more of a rough estimate than any thing else. What I need now is to build enough confidence to drive it more than 20miles from home. Or maybe enough dough in my pocket to have it towed home if she gives up the ghost on me!!!!
To a limit Waldo, advance to a limit! She should be running at about 95% efficiency with the timing set at the factory spec. Got good gas, Marathon, been running it for years in all five cars and never had a problem. Mentioned earlier, distributor has been completely restored, used old vacuum advance but leak checked it and found it good and yes, it does advance when you advance the throttle. Scroll through these and let me know whether the distributor looks good enough to put back into service.
http://rides.webshots.com/photo/2646130180098611668kmCppj 4ontheFloor, sorry I have to simply address ya by your handle, but I’ve been a member for about a year I know most of the other regulars, rather other old timers, by their first names but I’ve never seen your name mentioned. Thanks four the tune-up tips, I’m suure the radial tires are another factor that is adding to your fantastic mileage. In ’74 I bought a new Triumph TR-6 with Michelin radial tires, it was the first car I owned with radials. One of the first things I noticed about them was how far it would roll when I popped it out of gear. Much farther than the bias plies I had always run, told me something about the rolling friction of the radial tire. I wouldn’t conceder the 6.6:1 or 6.7:1 high compression though. So if I under stand you correctly, you made or found leaner main jets for your “B” carb, that right? With out a EGT gauge how do you know your not running to lean??
I don’t know how much less restrictive I can make the AC, the stock spark arrestor is almost like not having any air cleaner on it at all.
My shift points are 5mph, 15mph, 30mph and I wish I could shift to 5th gear at 45mph.
I have some doubt as to the advantage of advancing the timing beyond the factory spec at the low RPM that this old engine is turning most of the time. If we were crankin her up to five grand or so I might believe it would be beneficial.
Denny Graham
Sandwich, IL
