hello im from bulgaria,and im sorry for my bad engl.i hope you will understend me.

and my problem is..

i bay yamaha yzf 600r thundercat 98 year.the bike looks cool and drive perfekt.but when i push him hard on first and second gear put him on one wheel and burnout my temp goes to 100 dagrees almust near red line.i push the bike like that for max 15-20 min.

and out side is winter around 5-10 dagrees the time is realy cold.

i chek some parts did they work.i chek the 'termostat(i hope i use right word)" i chek the water pump both work perfekt.my bike are fuul with antifrize.

did that is normal or if not what can be the problem :S

if you need to know more info ask..

thank for all who will help me

guys i find the problem.my engine are broken

Hi dido" what was the problem,? cracked head ? or head gasket,?