is it possible to lift the head under boost, allowing coolant to get into the cyls and crankcase, but not pressurize the coolant chambers and thereby fill up the overflow tank????

i have a tiny bit of coolant in my breather, and im annoyed, the motor has 1100 miles.

 

yep- usually denoted by coolant squirting out of the overflow tank under load/boost.

Solution: ARP Head Studs

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackeg &raquo;</TD></TR><TR><TD CLASS="quote">
i have a tiny bit of coolant in my breather, and im annoyed, the motor has 1100 miles. </TD></TR></TABLE>


ok so your head is either lifting or you have a really tiny leak in your HG. Coolant in the breather means coolant and oil are mixing somehow- possibly when the head lifts.

There should only be oil on the breather

I would suggest you change your oil and coolant first- to prevent any issues caused by the possible mixing.

Then, do a compression and leakdown, this will let you know if the headgasket is to blame. If the comp and leak tests comeback good, it is almost undubedubly the head lifting.

Im assuming u r using stock headbolts?

 

they are arp's, but have been torqued/retorqued at least 4 times....


i did a compression not too long ago, 180 even, where it should be for the static compression.

im gonna pick up the leakdown thing to pressurize my cyls and see how much i loose.

also, gonna pull the cams soon i think and see if the headbolts have loosened up a bit.

 

everytime I had a slight gasket leak I could hear air (under a little pressure) come out of my radiator (when cold and taking the cap off).

always has been fixed with a headgasket change.

 

ok, dont know if its related, but i cant make more than like 7 psi, even with an open downpipe and my boost controller up to what should be closer to 14 psi...

the aebs sleeves, the sleeve itself sticks above the deck surface of the blocka tiny bit. i dont know if its normal, but the block at .010 taken off it after sleeve installation, so it should be true. anyway, there are small holes where the coolant passage is exposed and not at the higher sleeve deck, kinda between the block and sleeve. could this part not be sealed by the headgasket, and leak coolant into my oil drain/ventilation passages???

 

additional info: this is an lsvtec, and when installing the headgasket this time, i neglected to take out those little round thingys toward the outside, thereby probably not having the headgasket seal properly because it wasnt flat because these metal rings make contact with the head and block on an lsvtec. does that make sense/sound reasonable to anyone?