Heymow - Lawnmower Racing Forum
Engine Help => Briggs OHV & Vanguard => Topic started by: silveradoboy on April 20, 2017, 12:53:57 pm
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i have a 31a607-0741-b2 15.5hp ohv briggs engine and im trying to find a walbro lmt carb to put on it but cant figure out if one from a 28 block would fit. i dont care about the solenoid on the bottom of the carb because i plan to wire it out anyway, im trying to get away from the stupid nikki that is on the engine.
would a 698171 carb from ec fit? everytime i look at their site i shows it being a 28 block carb and not the 31 block.
and what is the biggest difference between the 2 blocks besides one being older than the other? will engine covers fit and internals be the same?
silveradoboy
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Basically to keep it simple, everything is the same except the bore, no difference in carbs
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Thanks, I appreciate the help
silveradoboy
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AS LONG AS ITS NOT AVS!
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What does the difference of avs mean? I have the avs block does that make a difference?
silveradoboy
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Avs motors run different size cranks and balancers than non avs. Typically they won't take the beating in a stock form that a non avs will but both motors can be built to run strong with the right parts. Do a search . Tons of info on here about those motors.
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I always wondered about the difference. Thanks to help guys ill do some searching later.
Do y'all know if people cut and modify the engine cover to run a velocity stack and pod filter or do they run a 28 block cover?
silveradoboy
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Basically to keep it simple, everything is the same except the bore, no difference in carbs
[/queote] in that case will a flywheel for a 31 or 28 interchange with each other?