yellohvette

I'm in the middle of doing my heads/headers/rod bolts swap. I've bolted down the new heads and valve springs...the engine currently has no intake manifold NOR does it have the pushrods or rockers installed.

When i turn the crank pulley i get a hissing sound. Obviously this is air escaping...but SHOULD this be happening? I've never heard it do this before but this is the first time i've done this without the intake and rockers/pushrods installed.

Do i have a compression issue?!

Thanks for all your help!

- Jeff

WickEdSix98

iTrader: (4)

Is the hissing sound like its coming from the crank case? Most likely its the cylinder pressure bleeding off by the rings and its normal.

yellohvette

sound seems to be coming from the top end. is that normal?

brad8266

iTrader: (23)

normal

yellohvette

thanks guys! just a bit paranoid still realllly paranoid about the startup after changing rod bearings and rod bolts! but that's a whole other story

again, thanks!

- Jeff