blown head gasket

[shee rips]

what do you guys think about this. billet impeller is on its way....

 

since i advanced my timing (3 degrees for now) shee has been running a little warmer. i was climbing in a few inches of snow last weekend and when i shut it off i could hear the coolant boiling in the head. later that day my dad said he heard it after burning around a pit too.

 

on friday i took her out, and i kept checking how warm it was, because i thought the impeller might be giving out. about 10 minutes into the ride it felt hot, and then i checked the rad and it was hardly warm. it took half a liter to top it off. another minute or so up the trail it started pouring white smoke/steam from the exhaust, but for the most part only under a hard load in a high gear. after about another minute it got worse and i stopped and had lost another half liter from 2 minutes of riding.

 

i let her cool off and filled it back up, and gently headed for home. i stopped at every clean looking creek and topped off the rad (about half a liter every 5 minutes still)

 

it still ran alright :shrug:

 

today i drained what was mostly water after being diluted, and the impeller seems ok from the outside. havent pulled the head off yet either

[fastrthnu]

what do you guys think about this. billet impeller is on its way....

 

since i advanced my timing (3 degrees for now) shee has been running a little warmer. i was climbing in a few inches of snow last weekend and when i shut it off i could hear the coolant boiling in the head. later that day my dad said he heard it after burning around a pit too.

 

on friday i took her out, and i kept checking how warm it was, because i thought the impeller might be giving out. about 10 minutes into the ride it felt hot, and then i checked the rad and it was hardly warm. it took half a liter to top it off. another minute or so up the trail it started pouring white smoke/steam from the exhaust, but for the most part only under a hard load in a high gear. after about another minute it got worse and i stopped and had lost another half liter from 2 minutes of riding.

 

i let her cool off and filled it back up, and gently headed for home. i stopped at every clean looking creek and topped off the rad (about half a liter every 5 minutes still)

 

it still ran alright :shrug:

 

today i drained what was mostly water after being diluted, and the impeller seems ok from the outside. havent pulled the head off yet either

 

billet impeller/100% engie ice. and what octain are you running. It does sound like you might be leaking some into a cylinder though. Get a cool head with o rings.

[Screaming Yellow Zonker]

did you up your jets after advancing the timing? The leaner the bike is the hotter it runs. Check your plugs for color.

When you pull the head off check the head for with a straight edge to make sure it's not warped.

When I replaced my impeller I also replaced the gear. cheap insurance while riding.

Compare the freezing point of engine ice to your low temps. If it won't freeze in your area I would recommend running it.

[shee rips]

im running 91 octane. the head is shaved .020, and i dont have money for a cool head right now.

 

no i didnt change the jetting after the timing change, didnt seem to need it. i will check them after a hard run once its going again though.

 

i was planning on checking to make sure everything was straight too, but thanks for good advice :thumbsup:

 

i also ordered a new gear, bearing and seal. figured while im in there i might as well.