hey got a built b20b with a gsr head I just got done finishing up my build, driving home it started to overheat really bad ended up having to tow it back to my house . The next morning I went out popped the radiator cap off there was coolant in it so I started the car with the cap off let it warm up to the right tempature and noticed there was a white milky substance whice would be from oil mixing with the coolant which is a blowen headgasket correct???. Just wanting to know what ppls think before I pull the head. Thanks for ur time.

 

Soundslike you are on the right track. What head gasket did you use? Did you use new head bolts and was it torqued properly?

* Never seen someone on HT so close to me... I live in wilsonville *

 

I used a cosmetic 85mm gasket im using 8mm ARP headstuds and was torqued to 90lbs. I pulled the head and to find out i forgot to put the molly lube on the headstuds which I believe would cause the gasket not to seal correctly ...the glorey of working on cars..always keep it lubed .

 

well im guessing u figured it out already. but the way to know for sure is let the car run for 15 mins take the oil filer cap off. if its milky than u have a blown gasket

 

yeap...but dont forget to used molly lube when you installing the arp`s

 

apply it on both sides of the washer and a little in the nut! use a new gasket and your golden.

 

Make sure you use a precision straightedge to check the head and block before your reassy.

 

ya I will im getting the head re-decked, then gotta get some molly lube a gasket lube those ARP's up and BAM poppin VTAK AGAIN!!! .

 

u figured it out yourself