2G Headgasket?

[Boostedmm17]

Okay so I went into this car not knowing if it ran or not. It's a 99 Spyder GST 5speed 230k. I had to put a turbo on the car because it didn't come with one (t25).
So I went to go out coolant in it and burp the system, when I noticed as soon as I pour water in it you can see it slowly mixing with something making it brown. Then it started bubbling really bad. So I drained it out and heres what it looks like.

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The compression test is as follows
Cylinder 1-0
Cylinder 2-140
Cylinder 3-100
Cylinder 4-130

Now one more thing im almost positive why all this happened. The previous owner had a 18g on the car. At first I was thinking okay so it's probably got ARP headstuds.. oh boy was I wrong, still has stock head bolts. So could the headgasket be causing all these problems?

 

[joemamma]

usally when u do a wet test like u did and compression goes up it indicates ring but your pressure is so low it could be one of the 2 i am talking about either way head would have to come off

 

[joemamma]

there may be an issue with #3 too --i believe the max diff is 10% from cylinder to cylinder

 

[91talonts1]

It's the valve seats that will cause low compression the stem seals being bad just burn a little oil.
Are you still losing coolant?

 

[Boostedmm17]

Im not sure I went straight to compression test it after I buttoned the timing up. I'll try the coolant tomorrow and see if im Lossing it still.

 

[gsxeclipse102]

Its either rings(most likely) or damaged valve/valves seat.

 

[Boostedmm17]

I seen this but I didn't think anything of it. This is #1 set of valves. The exhaust valves look like they have bumps all over them.

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[91talonts1]

Im not sure I went straight to compression test it after I buttoned the timing up. I'll try the coolant tomorrow and see if im Lossing it still.

Did you happen to rotate the crank with the head off, to check the cylinders out?

 

[Boostedmm17]

Yeah and nothing looked out of the normal.

 

[boostdawd]

Did u check the valves before u installed it back? I'm willing to bet a few valves are bent/not sealing. Stem seals are to prevent the oil from going into the chamber. It will not affect your compression as bad as it is. Did u get the head decked and checked?

 

[Boostedmm17]

Just checked it with a straight edge and a feeler gauge. The surface was in spec. I guess I'll pull the head again and double check the valves. BC like in the pic above the exhaust valves on cylinder 1 look rougher then the rest of the valves.

 

[gsxeclipse102]

You should invest in a cylinder leak down tester. It will tell you the area of leakage.

 

[dsmgreenhorn22]

You should do a leak down test. That will tell you why #1 has low compression.

 

[Boostedmm17]

Yeah see I would have done that in the first place but cant afford that and a air compressor sadly. I've always wanted one though.im gonna try and find the time today and take the head back off.

 

[joemamma]

You should do a leak down test. That will tell you why #1 has low compression.

this is true

too bad you don't have a compressor-could go to a pawn shop or harbor freight--140.00 for both from harbor freight

 

[Boostedmm17]

Coolant is disappearing faster now and the #1 spark plug is covered in oil. Also there is white smoke coming from the exhaust and when you open the oil cap. Then I looked at the exhaust manifold and found oil forming to the top of it through a crack I didn't see before, and around runner #1 is covered in oil too.

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[Boostedmm17]

Oh im buying a leak down tester and air compressor tomorrow.

 

[91talonts1]

Did you check the deck for flatness too? If your getting coolant and oil in that cylinder, it sounds like it's still not sealing.

What HG did you use?

 

[Boostedmm17]

Yeah it was good too. That's what I don't understand right now. @91talonts1 if you wasn't 3 hours away from me I'd ask you to come look in person. Haha

 

[91talonts1]

Yeah that's a long trip, I might have some free time this weekend, maybe not that much though.

If you pull the head, and the HG is the culprit, you can sometimes tell on either the gasket itself or the head/block surface where it's leaking at.

You didn't happen to use a MLS did you? Are the other spark plugs showing any sign of burning coolant?

 

[Boostedmm17]

Well if you do have enough time then that would be cool, if not it's okay. Haha

No it had a composite on it and I put a new felpro composite back on. I don't really like putting a MLS on unless everything is 100% flat.

See thats what I was looking for when I first lifted the head off and there's no marks or anything.

 

[Boostedmm17]

Oh and no the other plugs are dry.

 

[joemamma]

if you dont find anything wrong with the head-(which you most likely will) you are gonna need to take it to a shop to have checked

almost seem like you have bent valves in #1 and most likely bad guides anor or valve seals

 

[joemamma]

the coolant thing suggest headgasket not sealing or installed wrong

 

[Boostedmm17]

I've done many headgasket jobs on these cars so I know that was installed right. And I check the head surface and it was well within spec. The only thing I didn't look at was the valves because everything looked like it was just a hg. so I guess in gonna do the leak down test tomorrow and finish there. I have a back up engine, just don't wanna put it in right now. Haha

 

[joemamma]

ok i don't know the extent of your knowledge