Pop, then lost most compression won't start now HELP

[Street Ryderz]

Excuse me son, I cannot explain this phenomena all I know is replacing the head, increased PSI, replacing the cylinder fixed it and put the PSI at 203psi, stock cylinder was cracked. thank you so much

WTF? I want one of those LOL.

 

[gary55]

WTF? I want one of those LOL.

Ya me too. And a pair of ruby slippers.

 

[gary55]

Excuse me son, I cannot explain this phenomena all I know is replacing the head, increased PSI, replacing the cylinder fixed it and put the PSI at 203psi, stock cylinder was cracked. thank you so much

Son? Nice touch. Your welcome.

 

[Frankenstein]

So, coincidence that both the head and cylinder cracked or something that can happen if things aren't right? I was reading this and it sounded exactly like a cracked head, didn't expect to see the cylinder cracked too, at least he figured it out..

Out of curiosity as well, do you have a torque wrench, every cracked/warped head was from the guy not using even torque on the bolts, leading to warps and leaks and extreme temp differences that make that lovely pop sound indicating something went wrong..

 

[CrazyDan]

Fork that "pop" sound. Its an evil nemesis I fear.

 

[Frankenstein]

Fork that "pop" sound. Its an evil nemesis I fear.

Cnc heads are rather resistant to the crackage, if you use one you'll be spared a few whips.

 

[StreetDemonCustomCycles]

I used a torque wrench'

 

[KB_UK]

I think the compression coming back up isn't that hard to explain, metal changes size along with the temperature so the crack is changing size slightly. It's November after all, so figure compression testing a hot engine, then in a warm room, then when it's cold.