so i took my oil cap off today and saw this. it is caked all underneath the valve cover. it is not on the dipstick, and none came out when i drained my oil. it smells like gas and is stuck to the underside of the valve cover.

 

usually when you have a white milky substance like that on the oil cap = blown headgasket

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by batboyvaj &raquo;</TD></TR><TR><TD CLASS="quote">usually when you have a white milky substance like that on the oil cap = blown headgasket</TD></TR></TABLE> Coolant getting into your oil.

 

Looks like a ton of blowby. What kind of set-up do you have for crankcase ventilation?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdm inc &raquo;</TD></TR><TR><TD CLASS="quote"> Coolant getting into your oil.</TD></TR></TABLE>

i dont think so, its not like when coolant gets into your oil. i have seen blown headgaskets, but im not so sure this is it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90sedan &raquo;</TD></TR><TR><TD CLASS="quote">Looks like a ton of blowby. What kind of set-up do you have for crankcase ventilation? </TD></TR></TABLE>

i have two -10 vents on the front of the valve cover. i have the -10 on the back too, but i currently have them capped off. i guess i could add my other can i have laying around. excessive blowby makes more sense than coolant..

 

How much power are you making? Whats your set-up? It does look like blowby, especially since it smells like gas.

 

low to mid 400's on pump. sleeved and built gsr. 60-1 with .82ar. 1000cc injectors

 

So you are running 3 ports on the valve cover? Is your catch can routed back to the block, or is it over flowing?

 

it has a valve on the bottom for draining, i just leave it open. i have two ports off the front of the valve cover hooked up. i have 2 ports off the back of the block, not currently hooked up (they are plugged at the moment until i mount my other can)

 

Mine does that when my head gasket is leaking.

 

I would suggest hooking up the other catch can to see if this helps solve the issue.

It's possible that there is some coolant getting into the oil, this looks like blowby, but it wouldn't hurt to do a leakdown test and to monitor your coolant level more closely.

 

im loosing a little coolant, but im also getting a little bit of wetness in my floorboard, so i think thats my heater core leaking. i have ordered a new headgasket though, and im going to change it and i guess hook up the other can this weekend

 

Crazy

 

thats exactly what my oil looked like when I put a hairline crack in a sleeve in my old motor, prob your headgasket though since your sleeved

 

Do you have a pcv valve? Without that, the blowby is going to contaminate everything much more, since it is not being diluted with fresh air. Just letting the blowby push itself out isn't anywhere near as good. As far as the head gasket, why not do a hydrocarbon test on your coolant first..

 

cuz i can swap a headgasket in about 2 hours. its not that big of a deal. just go ahead and do it just in case. i dont have my pcv valve, so i guess that could be why.

 

So can I, but the hydrocarbon test takes about 2 minutes. I wouldn't want to end up wasting those 2 hours, + the cost of the gasket..

 

where can i get a hydrocarbon test done? autozone or something?

 

Probably. I had a shop down the street do it for me for 10 bucks. You can get the kit for 20-30 bucks, and it lasts for multiple tests. It's just a setup that goes in place of your radiator cap with a fluid that changes color when exposed to hydrocarbons, basically.

I'd bet your headgasket is okay though. I guess we'll see..

 

ill run by autozone and see what they have today once i get off work around 3 or 4. ill post back up tonight

 

Its coolant in the oil. 99% chance its the head gasket. But it could be a cracked head or block too.

 

im pretty sure u could also do a pressure test on the coolant system to verify headgasket, sunk sleeve, or cracked head etc

 

i havent noticed really any performance loss, so i dont think it would necessarily be anything major such as sunk or cracked sleeve.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tomdata &raquo;</TD></TR><TR><TD CLASS="quote">Its coolant in the oil. 99% chance its the head gasket. But it could be a cracked head or block too.</TD></TR></TABLE>

I agree. I had a leaky headgasket with the tiniest bit of coolant leakage, no milky oil in the oilpan, no performance lost. I always thought that 400+ HP headgasket blowing was catastrophic, not so.