Critics will have their remarks, but if you are broke and your engine is broken, don't say anything unless you can fund the repairs, I have done valve jobs with a drill and grinder, it is what it is
Very cleaver, I've know to use fine grit paper to polish journals, but I never thought to wrap a narrow piece of cloth around the journal as well. I'm going to be doing this from now on. Thanks for the tip.
My father and I had a crank grinder in our shop. It was huge. He turned the cranks. I hated just being near that thing. With the crank spinning that fast and that huge grinding rock. Just looked like catastrophe waiting to happen
Метод интересный для гаражного ремонта. Вот только тряпочку надо равномерно по всей ширине держать, а то получается основной съем идет по центру шейки. К краям получится эллипс.
@@user-sd4bc2lf5b скорее он стучал из за неправильно подобранных вкладышей. Точность деталей ССР очень радует. Из 6ти комплектов, можно выбрать что то на 1 двигатель. Одну десятую вы же не сняли ;)
На вкладыши если нанести бабит, гальванически или лужением. Бабит мягкий может обжаться под размер. Для Форсированных и турбированных моторов не пойдет.
I had a car with a spun bearing once, I took gray Scotch Brite to it and removed the bearing material from the crank. Took alot of rubbing but saved me alot of time and money. I drove the car for 3 months and dropped the pan again just to take a look see and everything was good to go. I was a happy boy
need grease in those holes, and then clean it off with a toothpick ; grit is in there and when the oil pressure comes it all goes to the bearings (it's ok like that, i am just that fanatic...º.º
As the crankshaft is sanded, the diameter decreases. When the connecting rod is assembled with the bearings, the clearance will be large. If there were a bearing with excess Babbit that could be adjusted like in the olden days, this service could be perfect, with standard clearance.
@@THEMOWERMEDIC1 Material is always removed from the shaft. It is a service that can work, but the diameter of the crank will decrease a little, even depending on the wear that the crankshaft already has. There are several tricks for adjusting the clearance but they are tricks, mechanics' hacks for repairing worn engines. Often these procedures are the best thing to do. All the best.
@@saylormalan Most engines have multiple bearing sizes available and the best bearing is chosen. Of those bearings, each has a range of tolerances that are considered to be satisfactory. Oil sanding with 600 grit, briefly, is likely not going to even change specification enough to warrant a different spec bearing. New crank journals are hard, journals coming out of service are harder still. I would likely bet the material he removed is in the single digits of ten-thousandths of an inch. Likely- less than typical crank wear of a higher mileage unit that had not been removed from service.
@@MJorgy5 I agree with you. Here in Brazil there are usually .25, .50, .75 and sometimes 1.0 millimeter bearings for use in rectified crankshafts but I know that in the past there were bearings with more material (Babbit) that could be adjusted by a good and skilled mechanic. Sometimes only one crank on a crankshaft is damaged...in such a case a bearing made to be adjusted would be very interesting.
Polishing a crankshaft with 600 grit and wd40 like this - it would take 4 straight days of continuous work, on one journal, to get a measurable clearance change. As far as the 'clearance being too large' - I suppose it would after the 4th day. Great catch - good to know there's people with eagle eyes that catch this.... smh
You pretend service manuals don't say to sand the crank with a fine paper 😂 No, literally, it does. Uou are advised to sand lightly when replacing bearings. It doesn't remove much if anything, and the life of a well oiled bearing means you'll only do this 2 or 3 times in the life of the car.
