I always thought that the cross hatch pattern was to facilitate a "honing" between the rings and cylinder wall so that there would be a match of surfaces. 30* for street engines and 45* for race. The theory was 45* will wear in faster and seat more quickly. Unfortunately, it will also wear out faster hence the 30* for street engines. Every oil holding scratch is a potential compression leak. Oil holding capabilities are enhanced by knurling the piston skirts which will not wear as much as the friction between it and the wall is less than the ring & wall.
Just received an original copy of Mechanics for Young America, a 1910 Popular Mechanics compilation. No other copy to be found other than print to order. Windmills, early cars, paper covered canoes. and the earliest wind surfers I've ever seen...[/color]
...BTW your Bieber avatar is awesome.-Malone
Right. I guess what I and some others have been trying to get across is this...Cheaper is not nessesarily better. I can't tell for sure as I didn't see it in person, but the pics I saw here looked bad. I never got a block back from a machinist looking like that, and if I did I would probably question taking something back to him. I don't care what someone does to their own stuff, but if I am going to publish something I did on the web *as I have stated before* I would put a disclaimer on it. For me it comes down to doing something better, not cheaper. Sometimes it costs more, sometimes less, but I strive to do the best I can, not the cheapest I can...sometimes they can be the same.
I have explained earlier that the harm done could have been:Junk in the engine/crankPoor ring seal=you are still using oil, more than any VW engine I have ran.All the parts ex: HG, bolts, antifreeze, oil, and TIME that you could have possibly had to do over.You could have scratched the walls to a point that it needed bored, thus causing more $ to be spent.What harm has it done? I don't know, other than this thread.I have also stated earlier that I have personally done some things not in the Bentley. I do however think that it should at least be consulted if you are thinking of doing a practice that is non standard, IF you don't know exactly what you are doing. Most days I do not need my Bentley as most of it is in my head. I mainly use it for electrical and interior work, but for someone who doesn't know it or what the jist is they should have it open IMHO.
This forum is littered with apparent failures by 3rd party 'experts'
I think you are arguing just to argue now. I left out besides scratching the cylinder too deep, from uneven pressure and coated abrasives being what they are, you could have left them not roughed up enough or in a pattern that didn't work with the rings.The end to my story is this: which one would you rather have in your car if both cost the same?ORIf you feel ok with it in your car fine. I nor anyone else that has a different opinion than you on the bottle isn't attacking you and trying to convert you to proper hone only. I and others are just trying to show that there is a different option to what you see as a different option. I am removing comments that are not in line with the thread.
My method does appear to have worked, but who knows perhaps my experiment will only last a few more years, whilst yours might last longer. [/color]