Smart Car of America Forum banner

Reaction score
108

Profile posts Latest activity Discussions Media Albums About

  • Gearhead ·
    Don,

    an area 2' x 2' on the back wall of the engine bay should do the trick, as well as insulating the lid or engine cover. If your turbo insulation kit wraps the turbo itself, that can lock in a lot of heat. It's kinda like wrapping headers. The engine compartment will stay cooler, but the header pipes get kinda fried and don't last as long. Similarly, wrapping the turbine side of the turbo and it's exhaust will keep the engine compartment cooler, but it will raise it's temperature -- by how much, I'm not sure in the case of the Smart. Research has shown that up to 49% of the turbine's heat gets conducted away by the oil but about 10% of the turbine's heat gets conducted to the compressor side of the turbo. At high throttle, this won't matter much. But, at low throttle this 10% conduction can contribute to higher IAT's. If the compressor housing is sitting at 300 degrees F -- any air that spends any time spinning around in it will certainly get heated. These numbers came from a 2004 dissertation -- "Experimental investigation and extended simulation of turbocharger non-adiabatic performance" from the University of Hannover, Germany. If a heat shield for the turbo is available which allows air to flow around it while blocking it's radiant heat from sensitive nearby objects -- that's generally preferred.
    donnyonee ·
    ive also heard the scotch grip hi temp adhesive works, but i havent tried it. thanks for the info about their adhesive, maybe just use the silicone. im hopeing to just do a area around the turbo, maybe 2' x 2'? along with the turbo insul kit and down pipe. and wrap the intake w/the reflective/self adhesive.
    donnyonee ·
    could you please tell me all about your trials with the heat reflective materials, im aiming for the reflective with kevlar, for inside the engine compartment and maybe a heavier blanket type under the carpet. ive just received the dei uni turbo insul kit and a heavy roll of the reflective insul wrap.
    thanks, don
  • Loading…
  • Loading…
  • Loading…
  • Loading…
  • Loading…
Top