Ollieollie Posted April 5, 2017 Report Share Posted April 5, 2017 I have no idea what any of that meant but nice to see some skill being used! Well done. I'm not an engine man Quote Link to comment Share on other sites More sharing options...
fortune Posted April 5, 2017 Report Share Posted April 5, 2017 (edited) It's all from a bygone era of decoking and valve grinding. An old boy I know bought a Skoda estate that had been used on airport runs. The body had a selection of dings but the engine had done 325,000 miles and had never had any work done on it. Years ago a motor with 60k was well worn and totally clapped out at 100k. Somewhere I've got a complete set of guides and seat cutters that I haven't used for 30 years or more. The majority of mechanics would have no idea what they are for. I don't know if it is a good thing or a bad thing that modern engines are so reliable and don't need work like this to be done but who strips engines down nowadays? It's all electrical problems now. Edited April 5, 2017 by fortune Quote Link to comment Share on other sites More sharing options...
rovercoupe Posted April 10, 2017 Report Share Posted April 10, 2017 Its that horrible trait of its broke just buy another. Quote Link to comment Share on other sites More sharing options...
oowee Posted April 10, 2017 Report Share Posted April 10, 2017 Its that horrible trait of its broke just buy another. Horrible? It lets you get out shooting. Only horrible when you can't get another one or anyone to fix the old one Quote Link to comment Share on other sites More sharing options...
Velocette Posted April 11, 2017 Report Share Posted April 11, 2017 That lovely sensation of sticking a valve onto the sucker rod,,a light smear of grinding paste and then rolling it between your hands as the seat beds in. Two or three turns,,,lift and rotate a quarter of a turn then a few more. Lift the valve out,,wipe it and the seat clean and admire a narrow grey seating line. Can't beat it !!! Quote Link to comment Share on other sites More sharing options...
bear-uk Posted April 11, 2017 Report Share Posted April 11, 2017 We had one of those where I worked 35 years back. Vaguely remember using it on some Perkins engines. Defo recognize the bits you are using. Great demo. Quote Link to comment Share on other sites More sharing options...
ditchman Posted April 12, 2017 Author Report Share Posted April 12, 2017 That lovely sensation of sticking a valve onto the sucker rod,,a light smear of grinding paste and then rolling it between your hands as the seat beds in. Two or three turns,,,lift and rotate a quarter of a turn then a few more. Lift the valve out,,wipe it and the seat clean and admire a narrow grey seating line. Can't beat it !!! that is "mind numbing".. ......what i do is to use one of my small battery drills and attatch it from the rear ...put the grinding paste on and pull the trigger ...slow speed ..then reverse it....makes a loverly job and you can hear it cutting............ Quote Link to comment Share on other sites More sharing options...
keg Posted April 12, 2017 Report Share Posted April 12, 2017 Proper motor engineer! Great to see. Quote Link to comment Share on other sites More sharing options...
SpringDon Posted April 12, 2017 Report Share Posted April 12, 2017 Nice period piece from the days before 3 angle cutting. Quote Link to comment Share on other sites More sharing options...
ditchman Posted April 12, 2017 Author Report Share Posted April 12, 2017 Nice period piece from the days before 3 angle cutting. Caterpillar engines used to have the valves at 30deg's and the seats at 33degs.(or something like that)...you didnt rub/lap them in....you raised the valve up... lined up a piece of hardwood with it...... and hit it with a hammer to seat it !! Quote Link to comment Share on other sites More sharing options...
figgy Posted April 13, 2017 Report Share Posted April 13, 2017 Caterpillar engines used to have the valves at 30deg's and the seats at 33degs.(or something like that)...you didnt rub/lap them in....you raised the valve up... lined up a piece of hardwood with it...... and hit it with a hammer to seat it !! Now that's my kind of engineering sometimes the old ways are still the best. Quote Link to comment Share on other sites More sharing options...
la bala Posted April 13, 2017 Report Share Posted April 13, 2017 Caterpillar engines used to have the valves at 30deg's and the seats at 33degs.(or something like that)...you didnt rub/lap them in....you raised the valve up... lined up a piece of hardwood with it...... and hit it with a hammer to seat it !! Is that why a 22A i operated moons ago used to blow huge smoke rings on start up Quote Link to comment Share on other sites More sharing options...
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