"Sex is about mating, Squish is about mating without making contact." -sing (sex without mating is absolutely NO fun though )
OK,
" 'Squish' or call them 'Quench Pads' " This and the line above had me doing research & writting tonight!!
I got a PM from one of our members asking about where there was information on ‘grooving’ the heads to increase swirl and combustion. I ran into a dead end so I PM’d a few other folks about it since I had never heard of the concept (I’m not a total hermit stuck behind a keyboard all the time. ) We all know the intake needs some turbulence to mix up the gas with air for a better burn. I mean, look at all the external gadgits and geehaws folks are buying to increase the atomization of the fuel in the A/F mix - Turbulators? Endyne puts them ON the piston, other put swirl stack between the carb and intake manifold. While ExtremeThings machines in 'speed bumps' when they port heads to increase swirl.
The ‘inventors’ name of this 'groovy' thing is Singh. Here’s some of what came in and what I found after being told where to start looking (Thanks Goose and MC) It kind of makes sense when the piston comes up the A/F mix is "forced" through the 'groove' towards the spark plug creating some turbulence, and if opposit the spark plug, it would 'maybe' channel some of the flame into the 'squish zone'. So with all this going on all over the world there is deffinately something to all this. So, a bit of added swirl in the combustion zone can maybe add a little more ?? I also think an E3 plug in this instance would be good since it shoots away from the annode (down the 'groove?' instead of sideways I know they helped on my small engines.
Anyway, Signh's Patent on the concept
Popular Science on the concept (looks like some of the pages are incomplete though?)
Design flow
PESWiki page technology and report with some links to dyno sheets
A not so flattering thread on Jeep Strokers by those who are “suspect” of a garage built performance idea. Odd though, we are ALL in the ‘garage built performance’ arena
But a more positive thread on GoFast News
An AutoTronix, LLC report on dyno pulls, (67 pages)
And Part II Combustion Analysis Report (30 pages)
And of course Singh’s web site (that really does read like an Infomercial and needs a Billy May's (or Vince from the Sham-wow commercials?)
And from that website – the reason why
Then a typical pic of the ‘job’ [Google search on "grooved heads" brought back a bunch-o-pics from around the world]
I can see where R&D would be needed to find the 'sweet spot' and then keeping the ‘groove’ consistent between cylinders would be a challenge, unless you had the mills and machines to do it right. A Dremal would be difficult at best, but a die grinder?
I do have a couple 17 HP engines and a gas powered generator or two I could give it a try on!! I mean just a port/polish and hand lapped valve job on my small generator netted an extra 45 minutes per tank (~12% better) and a higher RPM (I’m still trying to cope with)
Open to comments and discussions