I may be getting older, but I refuse to grow up!
Join Date: Jun 2012
Location: PACIFIC N.W.
Ask if they have a "bore scope", this allows locking in the motor thru the spark plug hole. You need a firm price for repairs, not we'll open it and charge more money.
Real loud clanking could be bent or broken valves and prolly wouldn't run.
Or valve noise could need valve adjustment and/or a timing chain is loose.
A bad lower crank bearing could make a lot of noise.
I would say check the timing chain, then pull the head off and that should reveal what's wrong.
Approximate US prices, and in USD;
CP 11:1 piston, $225. There are cheaper but don't have the quality.
Factory Yamaha head and base gasket, $75.
Timing chain, $25-$30.
Bore and hone cylinder, $75-$100.
If the crank is bad, look for a new motor as all the bearings will have metal chips in them.
'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.