had to change head gaskets

[SLOnLOW]

I was getting bubbles in over flow and pressure was pussing coolent out.I had noticed coolent seaping out of the Cometic gaskets so i decided to pull it apart and change out to some felpro's.When i disassembled motor to inspect I did notice gasket looked to have a breach on water passage.http://www.superchargerhelp.com/images/smilies/frown.gif

I also noticed the exaust ports on heads have some white spts on top of the black carbon build up? I will post some pics later.I also heard a psst nose when I loosened head bolts on # 5 piston.I did have plugs out prior to doing this also?wierd?

http://www.superchargerhelp.com/images/misc/progress.gif

[SLOnLOW]

http://i257.photobucket.com/albums/hh207/rserino/My%20truck/IMG_9552.jpg?t=1241489159

http://i257.photobucket.com/albums/hh207/rserino/My%20truck/IMG_9550.jpg?t=1241489310


http://i257.photobucket.com/albums/hh207/rserino/My%20truck/IMG_9553.jpg?t=1241489366


Anything stick out to you guys

[frdfandc]

I think with the Cometics, the tolerances are much tighter that when using a Felpro.

Install the Fel Pro 9333-pt1's. They are probably one of the better gaskets out there.

[john hennessy]

yes, somthing does stick out, the head gaskets were not sealing,

how many miles are on this engine since the heads were installed, because all the cylinders have had water in them, the give away ie the clean areas in the chambers.

check the heads on the block to see if the dowls are holding the heads off the deck, put the heads on and trap a .020" feeler gauge between the head and block in several places, if you can remove the feeler without much effort, the head or block may be warped, check especially along the top edge.

when using felpro gaskets, retorque after 3 or 4 heat cycles, just for the peace of mind.

also, the intakes are prone to leaking, use sealer along the botom edge and around the water passages, and again, retorque the bolts after startup and keep checking them, both hot and cold, these bolts loosen due to the manifold walking on the block,

if the center bolts are not tight, you will draw cranckcase vapors and exhaust gasses from the crossover into the middle cylinders and have a lean state which will cause detonation!
if the end ones are loose they can suck water into the outside cylinders and it will also seep into the crankcase