Blown head gasket or what?

[challengermike]

Tonight i went to the track and was racing agaist a racecar with open headers.Well the audiable knock detector was going off and i didnt hear it.My scanmaster was acting wierd all night,i had knock on 1 run and scanmaster didnt show any knock(i could hear it)so i backed out.Anyways half way threw the run the only that warned me something was wrong was some yellow light on the left side of the dash came on.so i let off and seen smoke behind me.After that it misses(like a dead cylinder) and it smokes alot of oil out of the tail pipes.It also sounds like compression is going somewere,maybee into the intake area?Has anyone had a blown head gasket act like this?There is no coolant in the oil.I am hoping its just a head gasket and not something more.Any advise would be great.

 

[turbodave231]

Yup,

Pull the heads..............and the oil pan to clean out the mess. Post some pictures!

 

[GSTOY]

Been there done that....yep it's a HG. Make sure you pull the pan and get the bits out of the oil pan.

Steve

 

[SMS]

......and clean all the little bits of head gasket out of the oil pick up screen. Don't ask me how I know.

 

[challengermike]

I will clean the pan and pickup.Maybe rip it apart this weekend.

 

[challengermike]

Heres a pc of the gaskets

 

[87BuickMan]

How much boost were you running?

 

[WS6]

How much boost were you running?

ditto...like to know any other data(O2's) you have when it happened.


...

 

[challengermike]

about 23 pounds with alky and 93.i am not sure if maybee the alky might of stopped working.I dont know what the o2 were.i was more conserend when i saw all the smoke out the back.i never though to check it,i just shut the car off right away.

 

[challengermike]

Also this car seems to be very hard to tune.1 run it would run at 23 pounds of boost with 0 knock the next run with no changes it will see all kinds of knock.So then i would have to back the boost down a few pounds(18-19) and all would be ok.Then if i start to turn the boost up again it will be ok for a couple of runs and it will knock again.That is why i am wondering if the alky isnt working all the time.

 

[SIXBANGR]

or

your fuel pump is going out.