Need reasons to why I have just killed my 2nd GT32 turbo in 1600 miles

[Chezedik]

I'm stumped, but I have a feeling it is either a build problem, or starvation issue. Either way, you need to talk to the builder.

[s13lawnornament]

sorry, I don't mean to get off topic here but I have been thinking about running a gt32 and was wandering what kind of spool up you were getting? Also sorry to here about your troubles.

[GlacierFreeze]

Just takes a little looking around. Anyways, here's a link to a thread, which I posted in, a link to a dyno chart with a GT32. First page, half way down.

zerothread/202436

[s14det]

Just takes a little looking around. Anyways, here's a link to a thread, which I posted in, a link to a dyno chart with a GT32. First page, half way down.

zerothread/202436

That is the dyno of my car back when it was stock with s13 cams. After I got a new tune for Scott it was 291hp and 295tq at 12psi. Turbo really seems to come alive around 13-14psi.

sorry, I don't mean to get off topic here but I have been thinking about running a gt32 and was wandering what kind of spool up you were getting? Also sorry to here about your troubles.

I'm getting about 15 psi by about 3200 or so when it was running . I was getting about the same with a stock engine and s13 cams.

Well I took the oil pan out and did not find anything. I took the Valve cover of and used a magnet and probed the head and did not pick up anything. I did take the oil filter off and poured out the remaining oil and it had a milk shake look to it. I cut apart the Mobil 1 oil filter and took out the filter. I am not sure how to actually get the filter apart so I can look at the inside of the filter to see what is inside. When the oil looks like a milk shake (Looks like metalic paint) is that from the rings? I think I read somewhere the first 20 min on start up it could look like that as the rings break in. Is that correct? Could all this super small magnetic particals be from a ring or rings?
Modified by s14det at 3:45 AM 11/5/2006

[S0lid_Snake]

my mechanic told me not to run sythetic through my engine for 20000km (yes i know, im canadian, its about 12000miles) to be safe and let the rings wear in properly, since they dont seat as well if they are run in synthetic oil. this is on my POS passenger van though. also he said to drive it for a 100km then change the oil. when i did that it was full of gas, since there was some blow buy obviously. gave it another one about 2500 miles later and there wasnt any gas, so the rings must have been good. lol now im rambling, so take from this what you will

[s13lawnornament]

Thanks for the link and info about the gt32 turbo it sounds like the one for me. As for your turbo faluire it might be the turbo if the bushings are mangeneise bronze and it had a burr or sharp edge on it that bronze will chew up a steel shaft in a hurry.That is the same material they make high performance valve guides out of and it is an excelent bearing material and lasts avery long time,but it is also very hardand a sharp edge will always cause a major issue. so, maybe if this happened with the first turbo and there were still shavings in the motor it cased your second turbo failure. I would say talk to your motor guy show him the pics of the drain plug and inside of the filter and see what his ideas are.

[s14det]

Thanks for the link and info about the gt32 turbo it sounds like the one for me. As for your turbo faluire it might be the turbo if the bushings are mangeneise bronze and it had a burr or sharp edge on it that bronze will chew up a steel shaft in a hurry.That is the same material they make high performance valve guides out of and it is an excelent bearing material and lasts avery long time,but it is also very hardand a sharp edge will always cause a major issue. so, maybe if this happened with the first turbo and there were still shavings in the motor it cased your second turbo failure. I would say talk to your motor guy show him the pics of the drain plug and inside of the filter and see what his ideas are.

I talked to my engine person and also Chris at AMS and they both have not seen or heard of anything like the stuff that is on my drain plug. That is what is so strange about this. Also, I have the first turbo that I blew up and the shaft to be okay.

[Edub1]

Well I took the oil pan out and did not find anything. I took the Valve cover of and used a magnet and probed the head and did not pick up anything. I did take the oil filter off and poured out the remaining oil and it had a milk shake look to it.

Modified by s14det at 3:45 AM 11/5/2006

That sounds like water in the oil.

[Chezedik]

Have you checked compression?

[WDRacing]

I'm thinking a road flare, duct tape and an empty parking lot are going to be the only fix for this situation...lol.

[s14det]

That sounds like water in the oil.

Well It looked more like small metal flakes. Like paint with really small flakes in it.

Have you checked compression?

I checked the compression about 1-2 weeks ago and was 150-159 on all cycl.

I'm thinking the best thing would be to pull the engine and check everything out.

[Chezedik]

Def. Basically, that had to come from inside the motor. Either clearances were not right or it ran dry for some reason. It isn't bearings of any kind (Because they are not magnetic). Also, we know it is not from the turbo shaft (or CHRA), it is not part of the pump, and it probably isn't in the head (meaning not the cams). Basically, that means it is walls, crank, rings, or pistons. But hey, that is my $.02. Talk to your builder and find out for sure. You have decent compression, although a bit low (but maybe not for a built motor), money says it is the crank. But even then, you would have had to spun a rod or main bearing. Unless they just weren't even put in, which I doubt very much you would get 1200 miles that way. I am eager to see how this plays out. Please keep us informed.

[Yeajimi]

Whats the wet compression like?

[s14det]

Whats the wet compression like?

Not sure what you mean? Sorry

[Edub1]

Are you getting much noise from the motor? Perhaps you should open your WG and drive without boost for a while and see what pops its head up.

But first, get an oil sample ~ 6floz mix it with water in a clear pop bottle. If the cloudy stuff is metal the oil will float to the top and the metal will sink to the bottom. Se if it's magnetic also. If you carefully pour off the oil and run the water through a coffee filter you will have a sample of your suspect. Is it aluminum or steel, etc? If it dissappears it could be water.

I know a new motor gives off shavings but I think these mostly get trapped in the oil filter or stay in the sump.

[Chezedik]

sounds like what I need to fix my KA-t.

[BoostFab]

how many miles of break in did you put on the motor? it's obviously you killed the turbo with all that metal fragments. run the motor a while longer NA before boosting it.

-4 AN is always a need to run an oil restrictor with the turbo, especially with a ball bearing ones.

[Chezedik]

Already beat that dead horse, also AMS' GT32 is not ball bearing.

[GlacierFreeze]

Wonder if that mystery crud on the magnetic drain plug could be additives from the oil????

[Chezedik]

Metal additives?!?!?!

[WDRacing]

Wonder if that mystery crud on the magnetic drain plug could be additives from the oil????

How about no....

[Chezedik]

I don't know which is funnier... the retard, free cat, or shaved cat. Where do you find these?

[WDRacing]

Trade secrets my friend

The shaved cat was one of my better ones

[s14det]

Well I am awaiting to hear back from AMS/Precision about the turbo. If I have to buy a new Center section I'm thinking about upgrading to the GT35 from AMS. I found nothing in the engine so the engine looks to be in good shape.

[GlacierFreeze]

Sorry I was tired and wasn't thinking quite straight haha. What are we on Zilvia now?

[Chezedik]

Touche'. My apologies.

[Florida240sx]

It has to be bearings...or it was the machine work never cleaned off the block/head....How is your oil pan tapped?? Wndering if you may of hti the lining inside and a piece flaked off and then it constantly gets chewed away by the timing chain??

[GlacierFreeze]

It's cool. Reason I even asked that question was because for some reason I thought a non-metallic could be magnetized. After I kinda got jumped on I thought how dumb my question sounded, but decided to do a search anyways not expecting to find anything at all.

It really suprised me to find something.http://www.sciencedaily.com/re...8.htm

[Chezedik]

Good find, I have never heard of such a thing. Neato!

[s14det]

It has to be bearings...or it was the machine work never cleaned off the block/head....How is your oil pan tapped?? Wndering if you may of hti the lining inside and a piece flaked off and then it constantly gets chewed away by the timing chain??

The oil pan was welded up when I first installed the turbo setup on the stock engine.

My engine guy said that on his Race engine's that he builds he put magnets in the oil pan. I am going to but a few in my oil pan just to collect some of the crap that is in there. I think that should really help out.