whats up all, got a problem. you know the little plastic 3 way piece on right side of bike for the coolant hoses. i ve replaced three of them over the years. but this last time some pieces got lost because they broke freee inside and i tried taking the whole coolant system and flushing, i found pieces in the radiator.
i tried vacumming out the sides of the head, nothing.

or i changed the jets about a month ago and maybe that could be, or the plugs are mis gapped or bad

i did try starting it without any of the coolant system on and let it warm for abot 3-5 min and #1 cylinder still got hot. i did notice it seemed to get hotter than normal within 5 min the gauge is almost half way, but that was with coolant in it

 

Well, your post dosn't make much sense, but from what I gather, some little plastic pieces are inside the watter jacket of your engine, so you ran it for 5 miutes without coolant? If you don't have any coolant in your engine, then the gauge usually won't read anything but the bike will still overheat.

I wouldn't worry to much about the plastic, I'd just fill it with water and go. You could put a screen in one of your hoses to catch the pieces and then check it in 100 miles or so.

 

Whoa, headers will get red hot on anything...but one cylinder just idling, that is scary (lean condition?). Stop running your bike without coolant.

 

It sounds like when you changed the jets wou didn't get the needles adjusted properly, i.e. a lean running condition. You need to check the #1 idle jet for sure, but it sounds like all of them may be too lean.