wild machine work concept - Singh groove?

[tastyratz]

Found this link:
http://somender-singh.com/content/view/97/52/
From mpgresearch.com forums (those guys are insane they have a lot of crazy new ideas)

What are YOUR thoughts on this idea? looks kinda crazy
found a few generic diy-er posts that seem to have good results. Seems to really be all 2 valve 70s engines that are posting their results (which are also good ones)

Before you say if it was good it would be done by manufacturers dont forget to read hes been doing it over 10 years and has a patent.

[Ihiryu]

i'm sorry, but the way they did that FAQ or whatever was confusing, this has to do with the block and head being o-ringed right?

[tastyratz]

not at all
This has to do with cutting a specific groove aiming towards the spark plug and the cylinder walls to promote jetting and turbulence increasing power and gas mileage while lowering bsfc. . The more squish area an engine has the more it may benefit. There are people with old 2v v8's claiming a 5mpg 10hp change.

[Ihiryu]

Ah, ok my bad, the faq thingy just didn't make sense, there's too many odds and ends to it. This may be better for a V-styled motor, considering that we are I4's I don't think cutting a groove would actually help us, because the plug sits right a top of the cylinder.

but only an assumption.

[tastyratz]

depends, some engines have better results. I dont think the DE would be a great candidate but the sohc is possibly one...

[FandZ]

I think it has so to do with getting a more complete mixture of gas and air along with having the A/f directed to the spark plug. I don't think it would be as drastic with a Dohc vs sohc but I'm willing to give it a try. I'm going to be running NA till my car is broken in after my rebuild so I'll be able to tell if it makes a difference on gas millage. City driving at least. It makes since and heads are cheap enough so I think I'll try it on my DE.

Any suggestions on where to place the slit? BTW here is a link of a guy in Spain doing to a head. http://www.youtube.com/watch?v=Ss7slCT0Vpw

[dopeassjackson]

so you hack a slot in between ur valves and its suposto gain you more complete combustion?

[tastyratz]

thats the gist of it. You aim the slot to the spark plug. Its supposed to make the mixture direct at the plug and direct the combustion at areas that would create turbulance, or areas that normally would have incomplete combustion to improve total burn.

[Ihiryu]

How much does this cost? like a round about?

[tastyratz]

not a clue, its experimental technology at this point. You can do it yourself with a hacksaw blade if you want...

[dopeassjackson]

how much does it cost he says. lol they show you how to do it on the video. i wouldnt bother, it may make your head crack and i doubt it actualy works.

[PSi]

Im a bit sceptic on this idea, Im all for enginuity but i dont really care about the gas milage in my cars made for power....

I dont see how this could in anyway be an advantage to power so im gonna leave it at that...

[FandZ]

Well in a month or 2 I should be able to post some results.

[LigouriRd.]

This concept has been around for a little while, I remember reading about it in CAR magazine some years ago. Since this is a turbo forum I would like to note that this modification is only for NA applications. Gooves like this create hot spots in the cylinder which can cause detonation in turbo applications. My $.02

[tastyratz]

that much makes me wonder, because a larger benefit is the complete combustion and shorter time for flame propagation resulting in less cylinder heat absorption and the ability to run later timing in higher compression. This ultimately would benefit in gas mileage as well as horsepower simply by just allowing more timing. I haven't found enough examples to be truly convinced enough to try it so far but its intriguing

[FandZ]

Gooves like this create hot spots in the cylinder which can cause detonation in turbo applications. My $.02

It isn't an issue because of aluminum heads. The heat is transfered far to quickly for there to be any kind of "hot spot" . The only part to be concearned with would be the very tip end of the edge and it shouldn't be left sharp. Nothing more than a little sanding needed.