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Lawnmower engine, 1 groove, 40% fuel savings.
Mr. Singh,
During March 2007, I modified the head of my 3.5 horsepower Briggs and Stratton Lawnmower engine with a single groove. Before modification and in good tune, I would run out of fuel before cutting the last 3 x 10 meters of my lawn. I modified the head with a single groove (picture is attached). After modification I mow my entire lawn plus the neighbor's lawn before refueling. Both lawns are almost the same size. Fuel consumption is reduced at least 40%, conservative estimate. I was able to lean the fuel to air mix after the modification but not before. Mid-range power is improved, and the engine runs cleaner. Your grooved cylinder head technique works very well on flathead engines. Feel free to post this information on your website.
Frank Akins  Only registered users can write comments.
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Just wanted to say hi!
Written by Judith on 2010-02-04 18:58:35
What is up everyone? My name is Jessica. I am from Slovakia. I am new to the forum and just wanted to say hi.. I hope I posted this in the right section on your forum... [url=http://somender-singh.com/?ccc9838caf13935900a0a543742]http://somender-singh.com/?ccc9838caf13935900a0a543742[/url], | B&S Lawnmower
Written by sc2dave on 2009-03-29 02:59:08
Mr. Singh, would 3 grooves instead of 1 be better? | Written by cuPiKA on 2008-03-29 06:51:27
I've done the same to a 3.5 HP Briggs push mower....using 3 grooves. Also added a roll of screening to the intake tube...as seen here...
http://autos.groups.yahoo.com/group/Don_Kendons_Intake_Scrolls/
http://f1.grp.yahoofs.com/v1/ IBPuR7TxsfcGqDEhDLYASfzeCReiRiGj4dq1DTrW1Fi2tcy_cpO32193ZnNd
F6tS6YWPMQH7RuFvCJaCKcVidnPvrRAy/Scrolls/The%2Bscreen%2Bin%2Bthe%2Btube.....jpg
http://autos.ph.groups.yahoo.com/group/Don_Kendons_Intake_Scrolls/photos/view/546a?b=1
Also leaned it out. Have not tested for efficiency gain...mower seems to run the same...good power.
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