awesome numbers congrats with that said lets see who disputes them I believe them but there are others who.....................
You have a Beta engine fat heavy rear tire and you made 130,128 that is impressive as I never seem to make really great power with the B engines. They run well but never like a A engine .
Well lets talk about the numbers .. First off it has a 3 stage pump , so there is going to be less oil in the sump and less air induced into the oil, at least that"s the theory right, nicely balanced crank, stronger cam plate with bushings.. again better cam support and oil control , again the theory,...
DD7 trans so the trap door is stronger and will greatly reduce gear load.. Larger bore that will un- shroud the outer edge of the valves .. You add all these little things up and where are you right here..
Will every build do this
That remains to be seen. However Got another in the works getting the same trans crank oil pump etc .. but running pwr dual and crusher's . Will see what happens , I played around a fair amount with timing and just little tweaks to get those numbers. adding 1-1.5 timing and then re test on each cylinder looking at very small gains in a small section.
. 133,134 on both side where simple but to get the last few it took some work.. I did not make my own goal with it .. But I feel that it did turn out very well . My goal was 1.21 per cube it remains to be seen if I can make that target..
Surley on the 660SM Its all about cylinder fill & all the parts work together.. I do not have enough hand's on to say really , I mean look at the sheets T man did have up, never seemed to be a big number roller on both sides. IF I recall your build cam in right where his thumper build from another poster on here ... going from the 4 inch to 4.125 may be of huge help
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Topic: Harley 117 Drop on Build in progress (Read 112214 times)