Posted by jdemaris on November 15, 2009 at 09:59:42 from (67.142.130.11):
This is the last follow up to my Deere 1010 crawler that I ran for many years with a 6 cylinder distributor with a four-cylinder cap stuck on it (1010 is a four cylinder engine).
I put the distrutor back on today with the four-cylinder points-cam stuck in. It runs better then ever, since I've owned it. Engine basically sounds the same but seems to have maybe 20% more power. I can charge a dirt-bank now in 2nd gear and lift with a full bucket of hard-pan and rock. Before this, I could just barely do that in 1st gear.
So, if somebody ever asks you a stupid question - like "can a 6 cylinder distributor run a 4 cylinder engine" - the answer is "yes."
I did the math and it seems this is how it ran. When it had the 6 cylinder distributor on it, and I timed it with a timing light hooked to #1 cylinder, it resulted in this. Firing order is 1-3-4-2. Timing spec is 26 degrees before TDC at full RPM. So, #1 was firing at 26 degrees BTDC, #3 was firing at 56 degrees BTDC (30 degrees overadvanced), #4 was firing properly at 26 degrees BTDC, and #2 was firing at 56 degrees BTDC (30 degrees over advanced).
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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