Good work Greg..

[Greg Hermann]

>Greg Hermann wrote:
>
>> The header will see the gap in
>> the pipe as an open end for pulse tuning. I SUSPECT that such a plenum may
>> even work better than an open pipe terminated at the same length as where
>> the first cut is.
>
>Take a set of headers and add extensions to the collectors of the same size (3
>1/2) and lightly spray the extensions with cheap black paint. Make a couple of
>hard passes and the paint will change color at the point they should be cut
>off.  This may also work to find the location of the plenum chamber. Engines
>sound different when extensions are trimmed like described.  Tom

Sounds (pardon the pun) good to me Tom--nothing like simple , available,
and to the point!! (in many parts of life!) Good one!

Regards, Greg