<VV> sick of my Corvair

[Tony Underwood]

At 05:48 hours 07/13/2005, Shaun wrote:

>----- Original Message -----
>From: "Tony Underwood" <tonyu at roava.net>
><Smit>
> >   Dropped seats
> > don't usually cause popping through the carb, at least not what I'd regard
> > as popping...
><unSmit>
>
>Oh yes they do, it's the number one symptom of a dropped intake seat. You'll
>see gas spitting out the top of the carb too.
>
>yea, Vairily... Shaun


Note that I said "not what I'd regard as popping."

I was not talking about the reversion effect you get with a failed intake 
seat and accompanying leak back through the carb that you get when an 
intake valve no longer seals the chamber.

I was talking about the POP POP POP you get banging back up through the 
intake log from errant exhaust trapped in the cylinder when an exhaust 
valve's no longer opening, for whatever reason.   The exhausted charge has 
to go somewhere and right back into the intake is where it goes as soon as 
the intake valve opens again, igniting the mixture inside the intake log 
and banging it back out through the carb.

It's a sharp POP, not the typical backfiring and/or reversion you get from 
a failed seat.

That's the symptom that I felt was being described in the e-mail to which 
I'd replied.



tony..