Tony Posted February 25, 2008 Report Share Posted February 25, 2008 In my quest to understand turbos i keep seeing this type of image.... Is this really how hot the turbo runs If yes then how on earth do you shield satellite components? Quote Link to comment Share on other sites More sharing options...
jon Posted February 25, 2008 Report Share Posted February 25, 2008 We had a car running lean at the imoc RR day and his turbo went that shade, quite amazing when you consider it's thick last iron! I think his steel manifolds got to near white hot. Quote Link to comment Share on other sites More sharing options...
Sam@TDi Posted February 25, 2008 Report Share Posted February 25, 2008 In my quest to understand turbos i keep seeing this type of image.... Is this really how hot the turbo runs If yes then how on earth do you shield satellite components? Properly and completely Quote Link to comment Share on other sites More sharing options...
Mark H. Posted February 26, 2008 Report Share Posted February 26, 2008 Could you ceramic coat it like exhausts to keep other components cool or would the turbo become too hot? Quote Link to comment Share on other sites More sharing options...
Sam@TDi Posted February 26, 2008 Report Share Posted February 26, 2008 Yes you absolutely could but the level of heat energy involved would soon heat the ceramic and you'd be back to radiating heat, the simplest way to address the issue is to isolate the turbo and heavily lag sensitive components in the proximity. We use a special Goodrich lagging that is designed to protect wiring in foundry machines from molten metal strikes it cost's around £60per meter Quote Link to comment Share on other sites More sharing options...
Tony Posted February 26, 2008 Author Report Share Posted February 26, 2008 So OEM turbo's do run this hot Quote Link to comment Share on other sites More sharing options...
jon Posted February 26, 2008 Report Share Posted February 26, 2008 I stand to be corrected but I doubt any mass production manufacturer would allow those sort of extremes. The turbo on my MR2 has only ever slightly glowed once and that was after a lot of abuse at well over stock boost levels. Quote Link to comment Share on other sites More sharing options...
Noel Posted February 26, 2008 Report Share Posted February 26, 2008 definitely not OEM http://uk.youtube.com/watch?v=p1qQUe3nqaE Quote Link to comment Share on other sites More sharing options...
Sam@TDi Posted February 26, 2008 Report Share Posted February 26, 2008 I stand to be corrected but I doubt any mass production manufacturer would allow those sort of extremes. The turbo on my MR2 has only ever slightly glowed once and that was after a lot of abuse at well over stock boost levels. You would be correct Quote Link to comment Share on other sites More sharing options...
Sagitar Posted February 26, 2008 Report Share Posted February 26, 2008 In my quest to understand turbos i keep seeing this type of image.... Is this really how hot the turbo runs If yes then how on earth do you shield satellite components? Properly and completely Could it just be a thermal image? This http://www.ir55.com/images/1utc_ewiurywiueryw8972349.jpg is a bowl of hot water, not a ladle of molten metal . . . . . Quote Link to comment Share on other sites More sharing options...
Tony Posted February 26, 2008 Author Report Share Posted February 26, 2008 In my quest to understand turbos i keep seeing this type of image.... Is this really how hot the turbo runs If yes then how on earth do you shield satellite components? Properly and completely Could it just be a thermal image? This http://www.ir55.com/images/1utc_ewiurywiueryw8972349.jpg is a bowl of hot water, not a ladle of molten metal . . . . . Your so surgical....... Love it Quote Link to comment Share on other sites More sharing options...
jon Posted February 26, 2008 Report Share Posted February 26, 2008 I guess there's no reason why it couldn't be a thermal image but why bother? Turbo's really do glow like that. Quote Link to comment Share on other sites More sharing options...
Sagitar Posted February 27, 2008 Report Share Posted February 27, 2008 I guess there's no reason why it couldn't be a thermal image but why bother? Turbo's really do glow like that. I will take your word for that, never having seen one operating, but I must say that I find the colours very surprising. Of course every body at a temperature above absolute zero emits thermal radiation and if we use some kind of photo-detector we can make the revealed colours pretty much what we like. So I'm naturally careful not to assume that any picture is necessarily showing what my eyes would see. I used to design small gas turbines, driven by the products of combustion of cordite, but it is a long time ago. I seem to recall that exhaust gas temperatures are normally kept below 700 Celsius and I wouldn't expect that sort of temperature to give more than a dull red glow. The kind of bright orange/yellow colours that we see in the picture would, from memory, imply temperatures in excess of 1000 Celsius and maybe considerably more. Perhaps I have my figures wrong. As I said, my experience was a long time ago. I would be interested to hear some current figures so that I can update myself. I worried a bit when I was writing this about whether I was confusing my temperature scales, but I don't think so. I recall from my apprentice days that even the gentlest of red glows from a piece of steel needs about 1000 degrees Fahrenheit. Quote Link to comment Share on other sites More sharing options...
Noel Posted February 27, 2008 Report Share Posted February 27, 2008 I guess there's no reason why it couldn't be a thermal image but why bother? Turbo's really do glow like that. I will take your word for that, never having seen one operating, but I must say that I find the colours very surprising. if you have a few minutes click on the youtube link i posted above (post #8) Quote Link to comment Share on other sites More sharing options...
Tony Posted February 27, 2008 Author Report Share Posted February 27, 2008 I guess there's no reason why it couldn't be a thermal image but why bother? Turbo's really do glow like that. I will take your word for that, never having seen one operating, but I must say that I find the colours very surprising. if you have a few minutes click on the youtube link i posted above (post #8) Looks scary Quote Link to comment Share on other sites More sharing options...
Sam@TDi Posted February 27, 2008 Report Share Posted February 27, 2008 http://www.youtube.com/watch?v=G5oFCpIW_ds Quote Link to comment Share on other sites More sharing options...
Noel Posted February 27, 2008 Report Share Posted February 27, 2008 seen one of my catalyst glow bright orange once .... coil pack had failed and it was overfueling... thankfully no damage done Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.