Was the head resurfaced or replaced when it was rebuilt?

 

replaced

 

a simple compression check of the cylinder will tell you if you have a blown gasket- also, your radiator fluid would be contaminated and your plug would show signs of contamination if your head gasket was blown. If you do pressureize the radiator to check for a headgasket leak- be sure to remove the spark plug to neutralize any pressure in the cylinder.

Are you sure your coolant ratio is correct and you're using the proper sparkplug- both would contribute to overheating.

Some fans will run both ways (+ / - & - / +) make sure when you hard-wired your fan, it's pulling air through the radiator and not pushing...

 

i was going to presurize the cylinder not the rad. also yes the fan blows the correct way, and i used engine ice straight witch is what the bottle rec. as for the plugs they were the ones that came with the bike just cleaned up and regaped.

 

I guess i have another question i see guys on you tube pulling wheelies in 3rd and 4th gear with this quad. mine will not even pull up in second unless i hit a bump and flick the clutch. should i change the jet sence there is an fmf pipe on it, i believe its got the stock jet ?

 

Have you re-check cam and value timing?

 

i have only riden it for 5 or 6 hours sence i rebuilt it and the timing, vaulves and cam lash were all correct. so unless it has jumped a tooth it should be right. the other reason i think its the jet is because it starts up and idles with out the choke.

 

is it possible to put the head gasket in wrong

 

I'm not sure about position, but I'm fairly certain there's a top & bottom surface difference... there is on 2 stroke outboards anyway, unless it's an o-ring.

 

ok heres an up date to my over heating problem. after cleaning the radatior out very well (took out of bike and washed) refilled coolent with 50/50, i went and rode it around the yard. my temp gauge reads about 135-140 deg and if i turn the fan on and ride it (or let it idle) the temp gauge reads 100-110. hows that for fixing my overheating issue.