Smoke at WOT

[94IVGT]

Smoke at WOT
94 GT 5.0l
less than 1000miles on motor
moly rings
vortech s/c 8lbs
new twisted wedge heads
cometic mls headgaskets
140psi on all cylinders dry test
no smoke on startup or cruising


is this normal at wot? what would be the cause of this?

 

[Therian]

it would be important for you to tell us the colour of the smoke

 

[94IVGT]

it would be important for you to tell us the colour of the smoke

its blue, the oil is not low and its not burning any other than at wot

 

[cbarr300]

blowing by rings under boost?

PCV?

my two ideas

 

[Chris_Red_V8]

could be valvestem seals too.

 

[DDSTANG94]

moly rings are Very hard, and can take i lil while to seat, and if the cylinder walls were not properly "hatched" when the rebuild was done they may never seat. As far as the valve steams seals I believe that would create more of a smoking at start up and take off, I'm not sure tho.

 

[94IVGT]

blowing by rings under boost?

PCV?

my two ideas

ive got new rings but as someone else stated that moly rings take longer to seat is that true?
and the pcv is also new valve, screen, vacumn hoses

 

[Fopar]

could be rings aren't sealed... how new is the supercharger? Any oil in the intake tract between S/C and throttle body?

 

[94IVGT]

supercharger is brand new, and im not sure on there being any oil in the intake

 

[go-stang5.0]

check to see if the pcv valve has popped out...or if the dip stick has popped up. When I had pcv issues, the pressure would cause the dipstick to pop up and oil would squirt out from there onto the headers. Making it look like my engine blew up every time I'd floor it. It could also be a bad intake manifold seal.

 

[Dino Dino Bambino]

blowing by rings under boost?

PCV?

my two ideas

I think you're right on the money. Improperly seated rings is possibly one reason. A blocked or stuck PCV valve causing excessive pressure in the crankcase resulting in piston ring blowby could be another. The latter would be easier to check and remedy if it's the problem.

 

[chuck943]

How is your PCV setup, is it same as from factory with the screen filter in the intake under the PCV? If so that screen may also be stopped up.

 

[94IVGT]

How is your PCV setup, is it same as from factory with the screen filter in the intake under the PCV? If so that screen may also be stopped up.

it is setup just like factory, with new valve, screen, hoses, and grommet