another bhg???

[johnathan1]

Well, you'll have to replace that plug...but it doesn't explain that horrible Milkshake...


lol...that song by Kelis..."my milkshake...is BETTER THAN YOURS!!!!"...lol :rofl:

 

[supraian]

wow i need a new hobbie, just pulled the head in a little over two hours :aigo:

definitly a bhg, heres the pics. gasket was an ebay gasket i'd stick away from them after seeing how this one fell apart. here are the pics. as you can see, some of the gasket stuck to the head. the rough areas on the headgasket are the middle layer of metal where the gasket material came off.

 

[KINGPIN33]

That gasket doesn't look blown at all... All the rings are still in tact..
The gasket material breaking up isn't really a clear indication that that was the real cause.

You should have checked other places for leaks before removing the head. Did you pressure test the coolant before removing the head to make sure there wasn't any leaks other than your freeze plug on the block? Other problematic areas could have been the following:

1) Throttle body cracked -> Bypass the coolant lines going to it.
2) ISC leaking -> Bypass the coolant lines going to it.
3) Head Cracked -> obviously don't reuse it
4) Turbo has a crack in it mixing the oil and coolant together. -> Try and bypass it to see if it that's the cause. Turbo being cracked is very unlikely

There's probably other areas, but those are all the ones i can think of now...

Anyone else know of others?

 

[supraian]

i didn't pressure test the coolant, i couldn't think of anywhere else it could be leaking other than the hg or a cracked block. the throttle body and isc coolant lines were bypassed. i took the turbo off a car that was running fine so i dont think thats the problem either. the head was pressure tested and came out fine. i'm not gonna rule out bhg yet cause i noticed there was a very very small rise between the surface of the block and the timing cover. its very small but maybe this was the cause of failure? why is the coolant in the back though wouldn't it be up front where the gap in the headgasket would have been? anyways, how should i go about testing the block for cracks?

 

[bluedragon17]

it could have also been from sitting for so long. And did you use any oil to assemble the head and all of that??? if you did it could have just been the assembly oil burning off..........

 

[supraian]

then why the milkshake? you should have seen this thing smoke, trust me this wasn't just stuff burning off

 

[bluedragon17]

hmmm.........sounds like a bhg........but it could be a crack in the block somewhere where you cant see it

 

[KINGPIN33]

i didn't pressure test the coolant, i couldn't think of anywhere else it could be leaking other than the hg or a cracked block. the throttle body and isc coolant lines were bypassed. i took the turbo off a car that was running fine so i dont think thats the problem either. the head was pressure tested and came out fine. i'm not gonna rule out bhg yet cause i noticed there was a very very small rise between the surface of the block and the timing cover. its very small but maybe this was the cause of failure? why is the coolant in the back though wouldn't it be up front where the gap in the headgasket would have been? anyways, how should i go about testing the block for cracks?

You say there was a small gap between the surface of the block and timing cover. WELL there's your problem!!! If i'm not mistakened, you ARE suppose to machine the block with the lower timing belt cover!!! This will allow the cylinder head to sit on the block even and straight without the lower timming cover preventing it from doing so... Does this make sense?

 

[johnathan1]

He's right^^^, but why would the #6 cylinder be full of coolant, and #1 be dry? I would think you would see the coolant up at the front of the motor, where the gap was...

I think that since you already have the head off, just clean the block and head up really well, check them both for flatness, and make sure the lower timing cover is flush with the deck surface. And because you have milkshake for oil, doesn't that mean that the internals (rod bearings) are already damaged? You may want to consider a full rebuild, and do a MHG... If not, you will have to flush the head block, and every oil line thoroughly, and get a Toyota OEM head gasket from the dealer if you decide to go composite, just to see if the Head gasket really was the problem.

Your problem is really weird, if the head gasket was as bad as you are saying...smoking, and the obvious milkshake, I would think that your compression numbers would be way off. Your numbers are pretty much normal.

edit: What kind of head fasteners did you use? And what were they torqued to?

 

[supraian]

checked out the difference, i couldn't find my gauge but looks to be a bit less than a 10th of a milimeter i dunno if thats enough to do anything especially with a composite gasket. i'm almost sure its a crack in the block now, i mean the gasket rings were ok the compression check came out good and the back pistons being full of coolant doesn't make any sense if it was the timing cover up front. i'll be searching for a parts car today with a good motor and will probably just throw that one in here, if not i'll be having a part out soon i'd really hate to do it though this is a 89 turbo 5spd hardtop body is mint. anyways i appreciate all the help.

 

[supraian]

johnathan, they were arp headbolts torqued to 80

 

[johnathan1]

Wouldn't the cracked block have shown up in the compression test? If it were me, I would want to know what caused he problem.

 

[supraian]

i was under the impression that a cracked block wouldn't, but i've never had a problem like this. can anyone confirm that a cracked block would show up on the compression check? i'm very curious to know whats going on too but my wallet isn't, seeing how empty it is :3d_frown:

 

[bluedragon17]

a small crack wouldnt show up and if it did it wouldnt be noticable however i went over my notes and crap for my other car(1929 model A ford i know i know ewww)and the block i had in there was drilled to deep the four bolt mains were that is those wouldnt show up or anything like that. what work has been done to the head and block and everything like that??

 

[supraian]

no work to the block, just made sure it was flat before putting the head on. the head was resurfaced. other than that no work to either.

 

[ForcedTorque]

Did you lap the block before installing the flat head? You need a good seal at both sides of that gasket.

 

[bluedragon17]

hmmm...........it could be a small crack somewhere that wont effect the compression. Go get a leak dtector test kit or something like that that comes with a dye. Fix the car with a MHG and arp studs put the dye in the coolant and run the car. The kit comes with these weird glasses and a flashlight. Put the glasses on and tunr the light on and search everywhere for any type of leaks if that doesnt work then im out of ideas.............

 

[supraian]

ForcedTorque it was a composite headgasket no need to lap the block

 

[KINGPIN33]

Did you end up solving the issue?