How, can you have any idea, what kind of tune he has. Oh and road racing maps, are ment to sustain long long periods of abuse and boost. Im sure this guy wasnt running his car wot for 20 min staright. So dont jump to conlcusions like that it doesnt help him out what so ever.

 

Its called experience and FYI you don't need a 20min WOT pull to have your EGT's climb enough to cause damage. Now STFU noob.

 

remove the turbo, clean out/backflush the i/c (there will be lots of fin debris in there). I recommend starting with water and then progressing to a brake clean type product to remove any oil/water in the I/C.

figure out why the turbo went. any surging? what boost were you running? how's the oil flow/pressure @ the turbo?

then get a new turbo and install per normal proceedures.

did you write that right? you're running a gt35 turbo at only 21psi?

 

1. Egt's cause turbo damage, never heard of that???? Maybe if it was off the chart.
2. Egt's will be hot pretty much with in the first or second pull, so if you have a tune that makes your egts way too hot after one or two pulls then you have a too lean of a tune.
3. Im only a noob because I dont spend my life on this site posting. That doesnt make me any more or less knowledgeable then yourself or anyone else on this site.
4. How does this have to do with anything about a turbo being blown.
5. Please refrain from any name calling, I dont think we are two years old. Lets be a little more mature.

 

Not quite there hotrod.

1. EGT's above 1350º cannot be sustained without eventual engine and/or turbocharger failure. (unless you have a Rotary engine, thats totally different).

2. Why do people think that the leaner you go, the higher the EGT gets? This is absolutely incorrect. Peak EGT occurs at stoichiometry. There are many ways to alter EGT's like compression & timing to name a few.

3. Judging my the misinformation you are posting, I'd say I was dead on there speed racer.

4. Do you know whats wrong? The guy the owns the car seems pretty clueless to me (sorry OP, it reads like you bought the car pre-modded).

5. But its soo much fun.. n00b.

Now back to the topic, I have seen (and been a victim of) the wrong tune. Many tuners will create a tune to make nice numbers on the dyno and be geared toward drag racing. A tune of that nature can result into high EGT's when performing sustained high speed runs (like the OP did). If you are going to run your car like that, I suggest you get a EGT gauge and a proper tune for how you plan on running the car.
I suggest the OP have the car sent to someone a shop that specializes in Evo's to ascertain the damage and formulate a solution.

 

1. As I said, really high EGT's can hurt a turbo. But in my 20 years of building forced induction motors, I have yet to see a turbo melt from being too hot. I know it can happen, but the amount of time and heat, you need to blow the seals in the turbo/ and or melt the metal inside of the turbo have to be insane. So we can rule that out.

2. You are actually wrong as well. It does have to do with compression, cam timing, boost, stroke, as well as spark timing. But having a motor that burns a leaner mixture of fuel and air results in higher cylinder temps. That is a known fact.

3. You shouldnt judge, its not really a wise thing to do. So get over your self.

4. Sounds to me like turbine started to hit the housing, which would explain the noise he hears.

5. Your lack of intelligence is quite aparant.

6. If you have have a tune directed just for drag racing sure. I can see that. But it is very stupid to have a street car that you drive everyday on the road to have a tune, that could cause your car to blow up, driving it fast on the freeway. Thats no fun. Now if the car is soley a drag car, and doesnt have sustain boost and high loads for long periods of time, then it would be understandable. But I highly doubt this is the case. Hence most tuners, wont tune a customers street car, to be able to blow up driving it on the highway for long periods of time.

 

Dude, seriously I am not here to educate you. Your dead wrong about the EGT thing. Also you said "Egt's cause turbo damage, never heard of that????". It doesn't need to be "off the chart" just over 1350deg for a sustained amount of time. How long? Good question but it will lead to failure. But you know maybe 20 years of engine building cant overcome the blinders effect. PM me and I'll explain that one. I have until recently worked with one of the most knowledgeable builders I have ever met. His name is Gareth Howell (of BTCC fame & ATF Power Engineering) and he shed light on this very same subject. I too thought otherwise then I had to eat crow. I suggest you do a bit more research before you look like... well.. an idiot.

BTW your comment of "But it is very stupid to have a street car that you drive everyday on the road to have a tune, that could cause your car to blow up, driving it fast on the freeway" Not only calls probably a fair number of people on this site stupid, but also isn't the same as the speeds you can attain on the Autobahn let alone for the duration as well. I'd know, I've been there. You?

 

Lean casues higher EGT's for sure. So does a VERY rich condition.