4x4forks 258 #1 Posted September 8, 2018 Have we got any information on a good supply of old kubota parts. I have picked up a B6100 tractor. I have found it had two broken head bolts which i have managed to remove. Blow torch and weld a nut on top. The head is pitted but not on the compression ring. I noticed that the exhaust valves appeared soft so removed the worst and cleaned it up. I found a crack in the valve seat leading to a small crack in the head. I am looking for a gasket set and a Cylinder head including valves and springs . I think i can get a head on ebay but short of the rest. Has anyone got any ideas for parts in the UK. Share this post Link to post Share on other sites
joegrgraham 30 #2 Posted September 8, 2018 Might be worth trying your local kubota dealer, if they don't carry the parts anymore, they should know where to get them as there are plenty of old kubotas still in work. 1 4x4forks reacted to this Share this post Link to post Share on other sites
Wristpin 400 #3 Posted September 8, 2018 As above, it may surprise you as to what is still available. or look for specialist Kubota breakers such as https://www.urparts.com/kubota-parts.cfm Share this post Link to post Share on other sites
4x4forks 258 #4 Posted September 9, 2018 Thanks for the link . Looks useful. Just done some testing on the cylinder head and it is cracked . Home made pressure testing 1 HeadExam reacted to this Share this post Link to post Share on other sites
nigel 1,876 #5 Posted September 10, 2018 Can’t you weld it up like I did mine ? 1 4x4forks reacted to this Share this post Link to post Share on other sites
4x4forks 258 #6 Posted September 10, 2018 Crack Down into indirect injection port and also into exhaust port. Valve seat gone. valve gone and valve spring. Enough is Enough! Bit the bullet and ordered a new replacement complete. 1 nigel reacted to this Share this post Link to post Share on other sites
4x4forks 258 #7 Posted September 14, 2018 still no engine yet. Waiting for the new cylinder head but had to make a start at new lights for the rear 3 Stormin, WestwoodGazelle and Anglo Traction reacted to this Share this post Link to post Share on other sites
4x4forks 258 #8 Posted September 26, 2018 Head arrived today fully assembled. Good job i tested it before fitting . Non of the valves had been lapped in and all leaked . So stripped the head and lapped all valves . Fitted new head with genuine Kubota gasket and new head bolts. Attempted to start and after loads of smoke she fired up. Now she is running again I am fitting a Nippon Denso alternator rather than the poor old dynamo. Share this post Link to post Share on other sites
Anglo Traction 1,016 #9 Posted September 27, 2018 21 hours ago, 4x4forks said: Head arrived today fully assembled. Good job i tested it before fitting . Non of the valves had been lapped in and all leaked . So stripped the head and lapped all valves . Fitted new head with genuine Kubota gasket and new head bolts. Attempted to start and after loads of smoke she fired up. Now she is running again I am fitting a Nippon Denso alternator rather than the poor old dynamo. Seems we can end up paying twice for things. Once for purchase, and then your own time to fix it properly before installing. At least you know it's done properly 1 4x4forks reacted to this Share this post Link to post Share on other sites
4x4forks 258 #10 Posted October 9, 2018 What price education! Share this post Link to post Share on other sites
