BLOWN MOTOR!! I think

[DJYoshaBYD]

ok... this D***HEAD sold me his very clean 91 tsi AWD.... it was smoking real bad when load was on the motor.. he said it was the turbo's seals and to replace it... he gave me another turbo... so Im outside looking under the hood and I notice that vapor (smoke) comming out of the dipstick and out of the oil cap on the valve cover.... my padre said it was blow-by caused by bad rings (most likely).....

OK... the real question.... what would be easier and more cost effective:

rebuild the bottom end (new rings, bearings, etc..)

or get another 4g63t and swap it in....

 

[1990talon]

Sounds like a HG problem for sure. I bet leak down test will be horrible. <waiting for results>

^^^^^ Read that!

 

[1990talon]

I bet the turbo is still good as well! but I definatly think the head gasket.

 

[DJYoshaBYD]

... I dont know why you are saying that... of course I didnt make them up... im trying to get help here, not talk about nonsensicle BS.....

like I said.... 30, 60, 60, 60

thats what it read.... you cant really do the compression test wrong... you screw in the gauge, crank the motor a few times... if its a healthy motor, it should build preassure quickly and WAY higher than what I read... sooooo..... logical thing is the head gasket... but I am going to replace everything I can while the motor is open....

where can I get a good deal and a set of ARP head studs...

and I am looking for a balance shaft removal kit... I hate balance shafts... I had a focus 2.3 and I took the BS out of that.. what a difference....

 

[DJYoshaBYD]

again... .... I know what it said.. im going to get a leak down test done today....read my other posts

 

[DJYoshaBYD]

the turbo is gar-bage'.... thats why I am rebuilding the other spare one I have while Im fixing the motor as well... that way I dont have to go back later and fix the turbo

 

[BrassMonkeY]

dont forget to mark the compressor placement on the shaft before taking apart.

 

[1990talon]

I wasnt saying that you made them up I was just trying to get my point across that they seemed low all I am saying is that if it were me I would do the head gasket and head because that is clearly one issue and the bottom in my eyes is most likely still good so do head top first see if that cures all or just some of the symptoms and go from there this is what I highly recomend you to do I am just trying to save you some money I was pretty sure from the start this was not a ring problem and the more you tell the more I think I am right I now am 99% sure you have a head issue and a leak down test will tell that for sure! for the leak down test just take it to a shop. the get it back and see what they say I bet they say the haed gasket and head is toast. so that is where I am coming from I would just fix the head then flush the radiatior and change the oil and redo the commpression test and see what the results yeild.

 

[DJYoshaBYD]

thats what I heard... but I am just going to get a rebuild kit, but it together without sealing it and have it balanced.. then when I get it back, I will seal everything up and install... either way, the turbo is going to be rebuilt and balanced

 

[1990talon]

this was supposed to be a daily driver... so I need it done asap... and Im a broke mofo, so I have to do it cheap

I don't get it I went along this hole time thinking you wanted it done cheap now you want to just do it all any way while your in there I don't get it.

 

[DJYoshaBYD]

the only problem with that, is if I replace the head and head gasket and turbo, and it still doesnt work, then I have to spend more money to fix the rest.... I am going to do the leak down test a little later on and probably take off the head to see what (and if) there is any major damage... but if the head is toast, THEN WHY WOULD SMOKE COME OUT OF THE DIPSTICK? I can figure that out... maybe its the rings and the head... its just weird that the motor is this F***ed up and it still runs, no problem (except that its slower than all hell)

You all have been a great help and I really appreciate you guys' advice... I will be back later on to post the results of the leakdown and head removal....

I might be able to get away with just doing to top end, and that would be freakin sweet, cause this was supposed to be a daily driver...

 

[DJYoshaBYD]

I don't get it I went along this hole time thinking you wanted it done cheap now you want to just do it all any way while your in there I don't get it.

well... Its still not going to cost me more than 600 from what I can see... thats cheap, if you ask me.... the rering and turbo rebuild kits are less than 500 all together... again, I wont know what to do until after the leakdown and head removal

 

[DJYoshaBYD]

sorry if I am being confusing

 

[1990talon]

Ok cool I get that I have been there so you seen that the oil was milky that is why you have smoke you have water in your oil I would say the head gasket is totaly hose. there are differnt ways a HG can blow it can go from compression to oil compression to water water to oil or all the above at once or any combination of the above.

 

[DJYoshaBYD]

ok... im going to play some final fantasy vii (yes I know, im old school) and wait for my partner in crime to get off work, then I shall do the tests... hopefully it will just be the top end, but if not, then it looks like im going to do little rebuilding...

again, thanks everyone for your help... ANY advice helps, so if anyone has any suggestions AT ALL, let me know....

"The doctor will be back with the results later"

paz

 

[1990talon]

compression in your oil means smoke out the dipstik there is more than on pathe to the oil the head is also a path. so that is why I think that. hope the leak down comes back as they thinkit is just the head.


Good luck,
Brandon

 

[DJYoshaBYD]

Ok cool I get that I have been there so you seen that the oil was milky that is why you have smoke you have water in your oil I would say the head gasket is totaly hose. there are differnt ways a HG can blow it can go from compression to oil compression to water water to oil or all the above at once or any combination of the above.

ok.. that makes a little more sense now.... thank you.... im going to decapitate that motherf***er in a bit.... oooooo ....grrreeeaaassseeee....

 

[1gcrazy]

Theres an awful lot of ragging goin on in this thread...

I've got a good shortblock if you need one...Just rebuilt, i'll sell it cheap. REALLY CHEAP.

 

[DJYoshaBYD]

well.. first off... you way too far away to hook me up with that motor without me checking it first.. no offense.... and I am just going to fix what I have....

and what do you mean by ragging?

 

[thjones3]

I think what 1gcrazy means by "ragging" is that there is a lot of bickering and jumping to conclusions without knowing any more information. You can guess all you want, but the proof is in the pudding, so to speak. When we see the test results, then we can make an informed decision on what to do next.

 

[1gcrazy]

I think what 1gcrazy means by "ragging" is that there is a lot of bickering and jumping to conclusions without knowing any more information. You can guess all you want, but the proof is in the pudding, so to speak. When we see the test results, then we can make an informed decision on what to do next.

Zackley....bickering...people gettin on your ass... People need to be understanding and direct. When communication is clear, things can get done faster.

Thats fine man. I just bought a built block from south carolina so I know how you feel. There are a few guys here in the Denver that would check out the block for you if you asked them nicly and paid for their gas...Thats what I did. Just do a search for members and type in Denver. Then you can talk to them on here or see if they have AIM. I'm a frequent member on AIM so... Just a thought.
I know a few of them but not all of them. I can even give you the number to the guy who rebuilt the motor... He's in Alamosa Colorado.
Anywho just a suggestion to help you out. If you're really against it no worries. I'm sure i'll sell it otherwise. Good luck!

 

[DJYoshaBYD]

well.. the only reason I was asking before I did all these tests is because I wanted to get a better idea of what I may be dealing with... asking doesnt hurt anything... just being curious... well.. it looks like im going to have to wait for a day to pull off the head and do a compression test.... I want to get it done tonite... but my friend is lagging hella hard.... when i pull do the leakdown and pull everything apart, then I will post them and youse guys can tells mes whats to dooses

 

[talonracn49]

Could it be...that the seals in the turbo are so shot that the coolant/oil are mixing in the turbo, part of that is being burned and seen out the tailpipe, while the other portion of exhaust/oil/coolant is flowing with the returning oil back to the pan? Thus creating the high pressure and the mixing of oil/coolant?

I think that you may not have had the o-rings on the compression gauge sealing correctly, as I have never had an engine read that low -- and run. I have had individual cylinders read that low, just before a rebuild, but....

Have you checked your mechanical timing to make sure that all is well there? Maybe that is why your compression is reading incorrectly, could be off a couple of teeth.

 

[DJYoshaBYD]

ok.... again.. I did not do the test wrong and the gauge is good.... Ive even had the motor compression tested in front of my friends dad, who is a master mechanic from PG&E... and the readings are the same.... 60 60 60 30... I dont know how the car is still running, but like I said.. MASSIVE smoke and VERY LOW power... i didnt get the chance to do the leakdown today, but I am doing it tomorrow morning, so I will post the results in the morning... im already prepared (mentally) to rering the car and replace a bunch of shi+... i just took apart my spare turbo and I am having it hot pressure washed tomorrow, courtesy of PG&E.... then the head is comming off tomorrow so after the leakdown so I can check out the internals for more damage... i will let you guys know tomorrow... wish me luck

 

[gsxtacy]

Just a heads up.........

You can get a NA 6 bolt long block online for under $600....That would wake your shit up quick with the 9:1 pistons...


No worries as long as you keep the boost below 15 on pump gas....

 

[DJYoshaBYD]

well..... i looked in to that, and I would just rather rebuild cause I KNOW what went in there and how good the parts were.... although, that 9-1 would give me hella less turbo lag... hmmm.... ... nah.. just going to rebuild it... im probably going to take pics too.... maybe.. mmaayybbee