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Author Topic: Doing 2 UNIQUE EXTREME Briggs engine builds Question??  (Read 4014 times)
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jake318
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« on: September 22, 2012, 10:15:13 PM »

Actually its 3 builds   1. 60ci  air cooled briggs v-twin to power  1936  Harley replica . briggs engine without shouds looks like its from 1920s  High performance/High compression pistons, cams, rods , carb, valves, rockers  ect fully modified . A company that builds performance briggs engines stated engine should  make roughly 75 hp at the crank.
 2. 45ci briggs v-twin   fully modified a above  engine.  This is going in   pro chasis  to race next season . HP unknown? 
 What HORSEPOWER AND TORQUE DO THE SUPER MODIFED MOWERS MAKE/RUN???

3.   THIS IS THE...VERY.. UNIQUE BUILD .... THE BRIGGS 60CI(993cc) liquid cooled briggs v-twin.
 this engine has had CRYOGENIC METAL TREATMENT,COATED FORGED PISTONS AND RODS, 10:1 compression, TITANIUM VALVES , RACE SPRINGS, CERAMIC ENGINE BEARINGS, KEHIN RACE CARB,PORTED,POLISHED HEADS , STEEL RACING CRANK , FEBER RACING RADIATOR AND OIL COOLER,  STAINLESS  HIGH FLOW OIL FILTER ECT ECT.

 QUESTION  HORSEPOWER& TORQUE OF  DRAG RACING MOWERS? UNLIMITED MOWERS?

 THIS ENGINE IS TO POWER A NEW ..HARLEY DAVIDSON  ULTRA ELECTRA GLIDE  WITH 6 SPEED  BAKER TRANSMISSION.

 ON PAPER , THE UNDERSQUARE COMBUSTION CHAMBERS AND 90 DEGREE CYLINDER ANGLE  IS ACTUALLY A ..BETTER .. ENGINE FOR A TOURING MOTORCYCLE THAN THE ORIGINAL HARLEY ENGINE .   THE BRIGGS DESIGN DEVELOPES HP& TORQUE AT A LOW RPM COMBINED WITH THE UNDER SQUARE COMBUSION CHAMBERS+LOW BOOST TURBOCHARGING  CREATES A WIDE LEVEL POWERBAND ( LIKE A MACK/CUMMINGS ECT DIESEL) IMAGINE A HARLEY WITH NO VIBRATION, STONG EVEN POWER AT ALL RPM AND TWICE THE POWER.

 QUESTION: HORSEPOWER& TORQUE OF UNLIMITED  BRIGGS DRAG MOWERS & SUPER MODIFIED TRACK MOWERS.
WE  ARE LOOKING FOR HP/TORQUE FIGURES SO WE  DONT UNDER ESTIMATE STRESS AND MISS A WEAKNESS IN THE ENGINE . THANK YOU PAUL END
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cycloneracer
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« Reply #1 on: September 22, 2012, 10:32:28 PM »

My question is who would buy a new $20000 Harley and yank the engine and tranny?   

If a guy has that kind of cash he could build some serious power with the Harley mill.  And less work.

How much HP are your builds making?
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jake318
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« Reply #2 on: September 24, 2012, 11:54:20 AM »

 My crew chief on the motorcycle race team was the head racing engineer at Buell and also has won 21 or 22 national titles as a crew chief. He knows EVERYONE lol and is getting phenominal deals  for the  Harley components for the build .  The rolling chassis comes in around 1/2 of  the sticker price ( roughly 10-12k) The last Mower racer   I ran  was with a different mechanic ( my currenent crew chief was  starting new business and took 2 years off of racing )    The race mower  engine used then  was a B&S OHV single  starting with a 420cc ? displacement  and then stroked to roughly 600cc.  Compression 14.5 worked heads valves  ect ect ect .  I ...THINK.. we here getting about 40hp, but our main concern  was attaining a  broad, flat power band  and good midrange .As im sure you know , Horsepower isnt worth much if  you cant get the tires to hook up off the corners.
     Question:   Have the cases/block and the crank main bearings  on the Briggs Vanguard engines  held up well?  any weak points in the engines that we should work on ? thank You Paul End 
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heymow.com - Lawn Mower Racing Forum
« Reply #2 on: September 24, 2012, 11:54:20 AM »

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