return line to gas tank

[David Piper]

Maybe thats why my MSD knock alert flashes below 3K under load, then clears.

TurboDave

At 11:01 AM 10/22/98 -0400, you wrote:
>> >
>> >PS detonation is not a problem over 3000 rpm (more flames).
>> 
>> No flames here. Just would say that reduction is proportional to speed, not
>> an absolute transition at 3K. Increased engine speed is a well documented
>> antidote to detonation. Drag racers could not begin to run nitro ("Pop") if
>> they did not turn their motors so fast! I suspect that a lot of the really
>> spectacular blows happen when the tires hook up too well, and slow the
>> engine down enough to where detonation matters! Never seen any numbers
>> (doubt if it is testable), but I suspect that nitro might have an octane
>> rating in the high seventies or low eighties, if that high!!
>
>combine that with the fact that it has a very slow burn rate and requires
>lots of advance to make any power (50-70^) and you have a real problem
>when RPM drops
>
>Clive 
>
>