Hello out there to the big bore guys. First time posting to this forum. Ive done quite a bit of research and can’t find the answer to my question. Ill start with the backstory. 6 years ago, I rebuilt the top end on my predator when we ran a compression test shortly after a rebuild and it wouldnt hold on a leakdown. I was in high school at the time and worked on it in my Votech class. Instead of tearing it down, my dad just ordered the 560 kit and we bored the sleeve and I tore the bike apart only to find that the rings had lined up so that was the reason for the poor running condition and the failed leak down test. Well, we already had the parts and correct gaskets so we threw the 560 in it.
I can’t remember, been 6 years, but my dad said theres an O ring when you go to a sleeve instead of just the base gasket. Does anyone know anything about it? I can’t find any information online about an O ring, and Honestly I don’t really know where one would go. I tore it down this morning and there was no O ring, so whether its supposed to have one or not, I didnt put one in when I rebuilt it last.
The only ways Ive noticed a coolant issue. 1. It'll empty the overflow in a few hours ride time. 2. White milky sticky substance in the air box where the crank case vent goes in, definitely coolant-good old fashioned taste test. I know, causes cancer or something in California. NO coolant in the oil tank though... 3. Gelatinous clear goo on the inside of the thread-in plastic timing 'plugs', specifically the lower one over the crank bolt.
No coolant is getting in the top end, the plug is a little wet with gas (a rich condition Ive just dealt with) but no coolant. Not even with a pressure tester on the system. So is there an O ring Im missing? If so, will the cometic gasket kit for the 560 come with the O ring I need? If I can’t find out where the coolant is getting in, I might have to go back to the 500 piston and cylinder I still have and look practically brand new.
Sorry, I don’t like to be that guy whose first post on a forum is a question for the rest of the community, I just need to find out before I order gaskets to put this beast back together.
Thanks for any help you can offer, I would greatly appreciate it.
I can’t remember, been 6 years, but my dad said theres an O ring when you go to a sleeve instead of just the base gasket. Does anyone know anything about it? I can’t find any information online about an O ring, and Honestly I don’t really know where one would go. I tore it down this morning and there was no O ring, so whether its supposed to have one or not, I didnt put one in when I rebuilt it last.
The only ways Ive noticed a coolant issue. 1. It'll empty the overflow in a few hours ride time. 2. White milky sticky substance in the air box where the crank case vent goes in, definitely coolant-good old fashioned taste test. I know, causes cancer or something in California. NO coolant in the oil tank though... 3. Gelatinous clear goo on the inside of the thread-in plastic timing 'plugs', specifically the lower one over the crank bolt.
No coolant is getting in the top end, the plug is a little wet with gas (a rich condition Ive just dealt with) but no coolant. Not even with a pressure tester on the system. So is there an O ring Im missing? If so, will the cometic gasket kit for the 560 come with the O ring I need? If I can’t find out where the coolant is getting in, I might have to go back to the 500 piston and cylinder I still have and look practically brand new.
Sorry, I don’t like to be that guy whose first post on a forum is a question for the rest of the community, I just need to find out before I order gaskets to put this beast back together.
Thanks for any help you can offer, I would greatly appreciate it.