tgbanshee Posted September 22, 2007 Report Share Posted September 22, 2007 A good friend of mine is a Harley mechanic and does Harleys and customs but doesn't usually do 2 strokes. I was going to have him check my bore diameter, out of round, and taper and then put a fresh hone on the walls. He asked me what crosshatch angle I would like and explained that there are different crosshatch angle hones you can do depending on what you are doing with the motor (racing, longevity, etc). He said he would most likely do a 30 degree but to check with someone reputable first. I do mostly trail riding and I was wondering if any of you guys do your own honing, what crosshatch angle do you use? Quote Link to comment Share on other sites More sharing options...
FireHead Posted September 22, 2007 Report Share Posted September 22, 2007 30, 60, 45, it really doesn't matter. It doesn't matter on a Harley either assuming it has a quality oiling system and the bore to piston to ring tolerances are correct. :geek: Quote Link to comment Share on other sites More sharing options...
sredish Posted September 22, 2007 Report Share Posted September 22, 2007 I usually shoot for a 54.983475* hatch but the tolerances for me are usually within +/- 0.023475848487832. Quote Link to comment Share on other sites More sharing options...
FireHead Posted September 22, 2007 Report Share Posted September 22, 2007 I usually shoot for a 54.983475* hatch but the tolerances for me are usually within +/- 0.023475848487832. I think you forgot to compensate for the angle of the dangle there. If you are having trouble figuring it out, the angle is directly proportionate to the heat of the beat. :geek: Quote Link to comment Share on other sites More sharing options...
sredish Posted September 22, 2007 Report Share Posted September 22, 2007 (edited) and I forgot that on my 4 stroke, I'm supposed to compensate for the add'l stroke so I'm supposed to multiply 54.983475 by .021 and add it back into it which gives me 56.138127975* Edited September 22, 2007 by sredish Quote Link to comment Share on other sites More sharing options...
FireHead Posted September 22, 2007 Report Share Posted September 22, 2007 and I forgot that on my 4 stroke, I'm supposed to compensate for the add'l stroke so I'm supposed to multiply 54.983475 by .021 and add it back into it which gives me 56.138127975* That's a pretty long stroke. What units is that figure in? ..........pico-parsec, king's yard? :biggrin: Quote Link to comment Share on other sites More sharing options...
blowit Posted September 22, 2007 Report Share Posted September 22, 2007 That's a pretty long stroke. What units is that figure in? ..........pico-parsec, king's yard? :biggrin: The only area where crosshatch angle becomes critical is for very EPA friendly cars to meet emissions. There is some reseach to prove that some finishes and angles will reduce oil use but we are talking a drop a week. On a bike, that sound just like Harley to "spec" a crosshatch angle. Whatever. 45 degree has been the norm for years and life of an engine will NOT depend on the angle but rather the run in procedure and grit of the hone used to hone the cylinder. Too corse of a grit can cause excessive heat and glazing on new engines. Brandon Quote Link to comment Share on other sites More sharing options...
jayzx10r Posted September 22, 2007 Report Share Posted September 22, 2007 30, 60, 45, it really doesn't matter. It doesn't matter on a Harley either assuming it has a quality oiling system and the bore to piston to ring tolerances are correct. :geek: I agree with that...it doesn't matter when you are running 50W oil!! Quote Link to comment Share on other sites More sharing options...
FireHead Posted September 23, 2007 Report Share Posted September 23, 2007 I agree with that...it doesn't matter when you are running 50W oil!! ................I have 20w-50 in my Harley. What are you trying to say? :biggrin: Quote Link to comment Share on other sites More sharing options...
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