Out of curiosity I did a leak down test on my engine before I tore it down due to a spun bearing on #1 rod. Here's the results I got.
#1 - 16%
#2 - 13%
#3 - 12%
#4 - 17%
#5 - 35%
#6 - 25%
Seems the numbers get worse as you get toward the rear of the engine. Another interesting I noted was that the numbers were consistently better with the piston at the bottom of the bore by 3-4%. Except # 5, it showed 9% less at the bottom. Keep in mine these were all taken cold so I'm sure that has some effect on the readings. The engine is coming apart for a stroker build anyway, but I figured I'd share this and see what you think.
#1 - 16%
#2 - 13%
#3 - 12%
#4 - 17%
#5 - 35%
#6 - 25%
Seems the numbers get worse as you get toward the rear of the engine. Another interesting I noted was that the numbers were consistently better with the piston at the bottom of the bore by 3-4%. Except # 5, it showed 9% less at the bottom. Keep in mine these were all taken cold so I'm sure that has some effect on the readings. The engine is coming apart for a stroker build anyway, but I figured I'd share this and see what you think.
