topend rebuild now head is leaking

[1635497banshee]

hey guys i just rebuilt my topend had to have it bored .40 over. had the cylinders ported and .40 shaved off the head got everything put back together and torqued to specs. filled it full of fluids never started the motor went out the next morning and noticed the head was leaking coolant. i spun the motor  by hand and it spit coolant out of the exhaust. so i took it all back apart and checked everything put a straight edge on the cylinder and head they both look good cant seem to figure out what would be causing it to do this  only thing i can think of is to much was taking off the head or do i need a thicker headgasket  any advice would really help thanks 

[trickedcarbine]

40 thou off the head seems steep. Make an L shape with solder and get it in the cylinder at the edge of the dome area over the wrist pin and turn the motor over to smush the solder to the shape of the squish gap. It should between 45/65 thou. If that's ok, move on to getting it sealed up. If not get a new head gasket to get the desired squish band.

 

The best way to get it sealed is to leave the base nuts on the cylinders loose. Step torque the head to the cylinders and then torque the jugs and head as an assembly at the base nuts.

 

Last thought, what kind of head gasket are you having issues with?

[1635497banshee]

Alright thanks i will try that the head gasket is wiseco it came with the rebuild kit the old head gasket was marked which side to put up this one wasnt so i put the raised side facing up dont no if that would make any difference <br /><br />Sent from my VS950 4G using Tapatalk<br /><br />