ok i guesse i have been informed wrong, i always thought higher compression higher temps, more low end power, lower the compression and you would lower cyl temps and also get more rpm. i will pull the head off tonight or tomarrow and get a pic of it. i did order a stock thickness gasket with 70 mm bore maybe the 72 mm bore the head is not hitting the fire ring enough and thats why i am blowing them out i will also get some pics of the gasket so you can see where it is burning threw at. the fire ring is usually still intack just seeping by and burning the graphite out and starts pushing into the water jacket.