[Tigers] Carb Fire Research

[Jeffery Randall]

A phenolic spacer would help keep the heat transfer down and give a
stronger shot of fuel for performance.

On Fri, Sep 11, 2015 at 8:42 PM, Stu via Tigers <tigers at autox.team.net>
wrote:

> I've been doing some research, and found an interesting video:
>
> https://www.youtube.com/watch?v=d7AkcjnCTVU
>
> To summarize, this guy does a good experiment that proves that some
> components of normal gasoline boil at around 170F.
>
> Our engines are usually well above this, so when we stop it's safe to
> assume that the underhood temperatures spike, heating up our carbs, and
> everything else.  So there could easily be some boiling in the carb  bowl.
> And once the 170F components boil off,  the temperature rises even more.
> When trying a hot restart, new fuel is introduced to the much hotter carb
> when the pump comes back on, perhaps there could be a few moments of
> additional, perhaps more violent boiling, blowing vapor and fuel out the
> vent.
>
> Last weekend I tried recreating the problem.  Similar hot day, drove
> around the same loop, etc.  Parked and waited 10 minutes, about the same
> time as before.  I had cleaned the top of the carb, so it was obvious that
> nothing had come out when I opened the hood and looked  But listening
> closely, I thought I could hear a faint sizzling sound from somewhere
> within the carb...   I did not try a restart, since I hadn't seen this
> video at that point.
>
> Any opinions?
>
> Stu
>
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