stroking Posted September 17, 2010 Report Posted September 17, 2010 OK if i had two motors,one with a 4mil and the other stock crank and both having the same topend and domes will the 4mil compression be higher ? also i had 155 psi with 19cc domes and installed 17cc and it only went to 162psi...to me that doesnt seem right.....cylinders are drag ported. Quote
Nutwood 472 Posted September 17, 2010 Report Posted September 17, 2010 OK if i had two motors,one with a 4mil and the other stock crank and both having the same topend and domes will the 4mil compression be higher ? also i had 155 psi with 19cc domes and installed 17cc and it only went to 162psi...to me that doesnt seem right.....cylinders are drag ported. elevation will have a big play on compression and dome size,the higher the elev the smaller the dome,I think 5000 ft above sea level and a 15cc dome is like 145 compression,going off a dome size chart. Quote
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