Yamaha TRX850 Enthusiasts Forum

Hi guys, i recently had to strip my cylinder head down to get a sheared bolt out (which ive yet to do, i need a dremel first!) but i did buy a full gasket set as i needed a couple anyway.

What im wondering is how beneficial it would be to replace all the gaskets i can whilst the engines out of the bike or should i just hole out until it needs them?

The main gaskets im thinking of are those of which sit above the valves, but these require a tool to get out in the first place, and i dont think theyre leaking. It's said TRX's burns oil, is this through the rings or the valve stem seals as if its these i'll do them anyway?

What would you do?

Taking the valves out is quite a job and usually you need a special tool.
If your camshafts are worn , i'm assuming it's got some miles so I would not only change seals but also clean all the carbon in the head, re-do valves, seats and shims.
Not an easy job but might as well do it properly.

Cheers mate, thanks for the input, its much appreciated.

One of my cams actually had some grooves from the cam seat, and the seat was slightly worn and burred, but not massively. it gave me some issues getting the shim buckets out however!

Due to the amount of work it would involve sorting the valves completely i'm going to give it a miss, ive just reshimmed it also so it was running nicely without any visable oil burning or much noise from the engine. However i am taking the opportunity to decoke whatever i can reach!

Cheers

Thom