oranginal

So on my last stock motor i remember the breather tube on the valve cover would suck in air at idle.
Since then i have a new sleeved motor with a looser piston to wall clearance for high boost and now the breather tube on the valve cover blows air out at idle. It's not blowing black smoke soi doubt the ringlands are cracked.

So i want to know if this is normal or if it should always suck air in at idle.

Thanks

lsvtec300

i think your talking a bout the blowby and air always comes out i never seen air get suck in the valve cover before and you will always have more blowby on a built motor

Boosted_B_Series

my freshly built engine blows out the top of the valve cover.

oranginal

thanks for the reassurance. But for other people who may search for this thread in the future can someone confirm if a stock motor would suck air in at idle, just to compare.

blinx9900

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lsvtec300 &raquo;</TD></TR><TR><TD CLASS="quote">i think your talking a bout the blowby and air always comes out i never seen air get suck in the valve cover before and you will always have more blowby on a built motor </TD></TR></TABLE>

this is true, mine pushes air out, whats up with all the hugs lsvtec300?? stop being kunie!!