Quote:
Originally Posted by jamesm
Teflon is Dupont-marketing speak for PTFE, which is only good to 300c. It also can kill you if you overheat it and breathe in the fumes. PEEK is good to ~250c. If you want to insulate much higher temps that that, you would typically use some sort of ceramic.
What kind of temperatures are we dealing with here?
edit: in response to the comment above, i agree 100%. the solution isn't a new, higher temp material. the solution is to keep the temps from getting that damn high in the first place, and that's a tuning issue (i believe).
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According to Toyota(or was it Subaru?), we're dealing with combustion temps during knock. Apparently the combustion pressure is pushing the injectors up out of the chamber, allowing the burning gases to squeeze past and damage the seal/injector body.
If that's actually happening, then we aren't going to find a seal that will fix it, it'll just make it take longer to start misfiring or whatever it does that generates the DTCs, and it really is a tuning issue and not a hardware issue.