I am in the process of repairing the bearings in my crank cases whilst it is apart. I have used the oven to remove all bearing and replaced most of them however there are two which I am not sure about. I have tried getting my head around codes but I'm making no progress.
I have 2no. I am looking for.
1)Koyo 83c107, black, sealed on one side, smallest bearing.
2)Koyo 6203DLAB, red, sealed on one side, 39mm outer, 17mm inner.
I purchased the following one but I'm unsure as the outer and inner walls look thicker so surely the ball bearings are smaller?
3)Koyo 6203DU
I have searched online and cant find an exact match. Has anyone else had the problem and resolved it?
Can't wait to build the engine up now!
Thanks
-- Edited by dlee22 on Wednesday 30th of October 2019 08:58:33 PM
-- Edited by dlee22 on Wednesday 30th of October 2019 08:59:48 PM
They will be OK maybe even a bit better as the ttr gearbox speed and loads arnt a tough job from memory they are the same as a lot of alternator .pulley ect bearings I used in my auto elect days
I did ask if I should take the rubber seals out to be more like the originals they insisted I leave the seals in as they are pre lubed and over time oil will work it's way in
-- Edited by ttboof on Monday 4th of November 2019 07:16:08 AM
I would take the seals out if that's how the originals are. Oil is a better lubricant than grease, and will also help with heat transfer, but it shouldn't do any harm.
