Honda MTX 125R 87 Engine knock

[siMcfixit]

Hi folks. Happy Easter. So am slowly working through, fixing and learning about t
he MTX 125 R. Starts first time. runs good..now.. doesnt like hills.. there is a distinct "knock" that comes from the waterpump area of the engine. its had this since I got the bike. also a small amountt of coolant does "weep" aswell. is this the botttom end on its way out. or maybee just a part for the waterpump. has anyone else had experience of this. Also.. I hear rumour that there is a 200cc engine that will fit in. again if folks have done this or can point me towards a online store that I could order one. it would be greatly appreciated.
Bon weekend.

[redeem ouzzer]

MTX200 engine will fit but it’s unlikely you’ll find one for sale and if you do you’ll find pistons nearly impossible to find as the scooter boys use them for a big bore conversion on a certain lambretta and most stocks are long exhausted.
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Be a REAL MAN!

[siMcfixit]

Interesting.youve just saved me a chunk of time. . them pesky scooter boys get everywhere. Well Im guessing a set of bottom end bearings wouldnt go amis.. tho maybee time to get back on a bigger bike. have a cool day.