Cam profile OK or not ?
Posted: Wed Nov 01, 2023 10:43 am
I am stripping and rebuilding a model 30. I have found scored big ends and a horridly scored piston (rear edge of right side piston) so i'm thinking that it has been run with the oil feed tap closed, but it's a new bike to me and i dont know much of its history. Main bearings seem OK. Maybe experienced members will have a view on this. While I plan rebuilding the engine (rebore, pistons, shells etc), I am noting the profile of the cams. I am used to "egg shaped" cam profiles but on this bike there is a distinct flattening on one side of the "egg" running up to the highest point on both cams. Does anyone know if this is correct, worn, important or not?? They are not scored, just an odd shape.
JAMPOT spares shop do not have any new stock of cams so I need to take a view as to whether the unexpected profile is an issue or not for me.
Thanks in advance for any advice.
Sorry, but I can't work out how to show an image ! - I think i need some sort of web platform to put it on and i'm not a teenager so its too much for me !
JAMPOT spares shop do not have any new stock of cams so I need to take a view as to whether the unexpected profile is an issue or not for me.
Thanks in advance for any advice.
Sorry, but I can't work out how to show an image ! - I think i need some sort of web platform to put it on and i'm not a teenager so its too much for me !