Does anyone know that the problem is in my rb30et, my catchcan fills up badly with oil n it seems to be greyish instead normal oil colour and the water level keeps dropping in the radiator. anyone know whats the cause of this?

blown head gasket my first guess water from you radiator is getting it to your oil makeing it turn gray

dude not good! the greyish stuff sounds like water. from experience... i would say you have cracked a gasket, head or possibly the block. water mixes with the oil, the crack means the water is being pressureised more, which mixes it all up, hence why you are loosing water in the radiator, it is getting pressureised and pushed into the catchcan + oil lines. best to get this checked asap, hopefully its only a gasket or head dude, but i managed to crack the block on my 186, see i didnt know what had happened at first so added water to the radiator which made the problem worse, (cold water in hot engine) it got o the stage where i blew out all my radiator patches! thats what pressurizing the water lines does.

can i just put CHEME-WELD on it temporarily?

mabey but i wouldnt suggest it its kinda a must fix prob its not good leaveing it like that besides you dont know what gasket youve blown

Take your oil cap off and if there is creamey oil on there the gaskets gone. Chuck me a Pm if you need it done. http://www.calaisturbo.com.au/showthread.php?t=109995 Price and details are there.

Yea i think the gasket is gone, its all over my catch can n engine bay. I must of boosted too high n broke the piston rings as well, if that much oil goes into my catch can. Might as well drop my other engine in and do a full rebuild (forgie etc). Do you do machining (bore etc)?

Chemiweld does not work well on boosted motors!!!

what boost were u runnin mate? dont people replace with stock nissan gaskets and rerun 20+psi? i baught a commetic even though people think u dont need them. are the roumers true?

u did exactly what i did right down to the very last deatail, my car drove i drove it around rooted soon as i pulled it down the pistons disinigrated as i removed them from the block..... lol and belive me.....if u go a stock rebuild it kinda hurts...if u go forged it really hurts unless u get a loan or something but *** that

hey guys, CHEME-WELD works fine in my engine, water level is not dropping. I just drive it around as slow as i can, try to not put it into boost. Should finish my spare rb30 full rebuild with forgies, cam etc in the next few weeks.