See also..
http://speedtalk.com/forum/viewtopic.php?t=3294&postdays=0&postorder=asc&start=0
http://speedtalk.com/forum/viewtopic.php?t=1396&postdays=0&postorder=asc&start=0
http://speedtalk.com/forum/viewtopic.php?t=3876&start=0
There has been almost no quantitative data to support *Somender Grooves*.
The testing that has been done is either qualitative based or the measured
difference was small enough to fall within the margin of error of the dyno.
If you've followed this on the engine building forums, you will have noticed
there is only one or two people championing *Somender Grooves* to be
something worth pursing, while many "experts" just claim its snake oil.
My *unexpert guess* is that there is nothing really to be gained with them,
and you have added more edges to the combustion chamber which can cause much
unwanted hot spots. Also, they will eventually fill with carbon which will
reduce their effectiveness (granted they worked in the first place). If you
get them right, you might be able to reduce your total timing by a degree or
two. You will see a bigger power difference in power between two track
sessions due to differences in air temperature alone than you will with
those grooves. There are gains to be made in other places in an engine where
your time and thought would be put to better use.
My .02
Bob
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