wild machine work concept - Singh groove?
wild machine work concept - Singh groove?
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.
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.
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.
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.
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
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
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so you hack a slot in between ur valves and its suposto gain you more complete combustion?
rebuilt KA24E, port and polish, secondaries removed, stage3 clutch, fidanza flywheel, JGS MM, 3inch cat back with high flow cat, cherry bomb vortex muffler, B&M short shifter,ST sways,nismo brase
KA24ET RB20 turbo, 460cc
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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.
rebuilt KA24E, port and polish, secondaries removed, stage3 clutch, fidanza flywheel, JGS MM, 3inch cat back with high flow cat, cherry bomb vortex muffler, B&M short shifter,ST sways,nismo brase
KA24ET RB20 turbo, 460cc
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...
I dont see how this could in anyway be an advantage to power so im gonna leave it at that...
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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
"There is no such thing as too much boost. You could have too little rod, piston, sleeve, head gasket or timing. But never too much boost."
'91 Nissan 240SX
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'91 Nissan 240SX
'96 Nissan 240SX KA-T
'05 Grand Cherokee (4x2)
'85 Honda Nighthawk 450SC
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
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.LigouriRd. wrote: Gooves like this create hot spots in the cylinder which can cause detonation in turbo applications. My $.02