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groved heads #384687
07/16/11 12:47 pm
07/16/11 12:47 pm
Joined: Nov 2006
Posts: 279
Wisconsin, USA
F
franko Offline OP
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franko  Offline OP
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Joined: Nov 2006
Posts: 279
Wisconsin, USA
I receive a paper called Farm Show. It's Mostly for rural readers. Things that are done and made to help out on the farm. One of the articles was how people had grooved the squish area on the heads of their tractors, to improved fuel consumption and boost power. We all have heard this before. In the article a web site was listed, so I clicked on it. It was wordy and lots of global warming stuff. When I clicked on the groove pictures over the years it became clearer. They show just grooving between the valve pockets at the start, to multiple grooves leading from the intake valve. Later pictures show forked grooves and dimples. The site is www.somender-singh.com . I didn't see anything that needed to be bought, just information. I was wondering what your thoughts might be on this. frank coleman

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Re: groved heads [Re: franko] #384688
07/16/11 1:00 pm
07/16/11 1:00 pm
Joined: Sep 2005
Posts: 5,963
NL
G
Ger B Offline
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Ger B  Offline
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Joined: Sep 2005
Posts: 5,963
NL
If this is about diesels (and looking at the shape of the combustion chamber I think it is) I can imagine that more air turbulance can lead to a better fuel / air mixture and spreading of the flame front during the injection period at piston top position. The groove shown may open the barrier caused by the low dome shape, and help the flame reach the far end of the combustion chamber.
This may lead to a better combustion and thus to a lower consumption / better performance.
But I think that an engine designer / developper / manufacturer knows about this also and goes for optimum before he puts the engine in the market.


Ger B

Re: groved heads [Re: Ger B] #384697
07/16/11 2:05 pm
07/16/11 2:05 pm
Joined: Nov 2006
Posts: 279
Wisconsin, USA
F
franko Offline OP
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franko  Offline OP
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Joined: Nov 2006
Posts: 279
Wisconsin, USA
Hi Ger: Nope, gasoline engines. A lot of the older tractors are still in use. frank coleman

Re: groved heads [Re: franko] #384721
07/16/11 4:14 pm
07/16/11 4:14 pm
Joined: Aug 2001
Posts: 2,603
New Hampshier USA
MikeG Online content

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MikeG  Online Content

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Posts: 2,603
New Hampshier USA
Only looked at the 2005 pictures but it seems like he did it to everything from Briggs to small block GM to 2 strokers. Might be interesting to try it on an old snowblower engine just to see what happens.


1960 BSA A10
2007 Suzuki Bandit
1957 A10
(Used to be a Triumph here)
71 Norton Commando
Re: groved heads [Re: franko] #385222
07/19/11 5:10 pm
07/19/11 5:10 pm
Joined: Aug 2001
Posts: 157
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Pat Offline
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Pat  Offline
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Posts: 157
They are talking about flathead engines. Remember reading about the guy in India, a real homemade mechanic, spent a lot of time designing and testing a V groove from the valves to the spark plug. He said he found a 25% improvement in mileage. Got to admire someone who hotrods what he can afford, how long did Harley race flatties against OHV Triumphs?


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