If it ant broke don't fix it

Isn't clunking a bit normal and I though that a little bit of noise could also be normal

Drive it abit it might go for years

I had a mates father who remove a 202 from his car because it had a tick in it and put in another motor In,this motor used no oil and run well .I talked a mate into buying it and putting in his ute 20 years latter I think this motor is still ticking away .