Posted by LarryM on April 09, 2013 at 18:37:52 from (76.210.62.93):
In Reply to: carb help? posted by v8s10 on April 08, 2013 at 17:26:46:
If you are pulling against me then I would agree that you should use a 27 venturi. :-) The guys who say use a 27 on a 281 cubic inch engine have never taken the time to actually test their hypothesis. I have plain jane C-281 with comformatic pistons that I am getting 69 hp at 540. I have a hybrid carb. The top is off a C-281 power unit and the bottom, the metering nozzle, and venturi are off a 301 combine engine. I gained 2 hp going from a 27 to a 33. I gained one more gong from a 33 to a 35. I do suspect that if I lug it down it will die off sooner with the bigger venturi but I want the horsepower at higher RPMs. If I am pulling and my engine lugs down because she ain’t got enough it is time to rethink some things. In the words of Sergeant Friday “just The Facts Ma’am; Just the Facts” All ideas are opinons until tested on a Dyno and opinons are like armpits; everyone has two and… well you can figure the rest out. Engineers Rule! Never under estimate the power of Geek! P.S. I have had few beers so if I come across as an A-Hole… Well I guess that means I am on the A-Team!
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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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