Honda: INNOVA125i(2010); CBR250R(2013)
Welcome to the forum, so if I understand correctly the pictures are taken from the forum and they are NOT pictures of your engine. I understand it right?
LINK TO PARTZILLA
Motorcycle mechanics is a very serious matter, which requires a lot of knowledge in several fields. Knowing the theory of mechanics is only one area of knowledge. You need a tool cabinet with the right tools for this type of work. You need to know how to operate those tools. You need technical literature of your motorcycle. You need to know the safety rules, in order to avoid very serious injuries....I recommend you to stop the work and take a mechanics course for beginners, and continue to complete from there any other lack of knowledge you discover you need...and only then It will be right for you to go back and try to repair your motorcycle yourself.i have barely an idea of how engine work
It is not enough to replace the worn parts, you have to check if other damages have been caused to other parts, and you have to check what caused that wear: oil leakage, low oil pressure, blockage of the oil passage, then why the passage was blocked, cooling problems... and there are other options.the inlet camshaft has a bit of wear and tear
There are many good websites where you can order spare parts, here is a link to one of them (there you can also see the catalog number of the part you need):where does one buy this dam thing?
LINK TO PARTZILLA
In your situation I would not start ordering parts before I finish diagnosing the entire problems. Maybe you will find that it is better to buy a complete new engine? Maybe you will find that the renovation is to expensive and you give it up?When i went to loose the bolts they were completely loosen on the left inlet valve