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hay i just got a old briggsstratton 18.5 horse power it wont start or anything. im trying to make it a racing/pulling mower but it wont start. ive cleaned the heads,carb,intake tube. the engin turns to so i know its not locked up. what do i do.

try this stuff

1.see if it is firering
2.check condition of plugs
3.is it getting gas
4.how much compressing does it have
start there and see where that gets you

the engine dosent even crank ive been pulling parts and tweeking with pieces it just stumps me why it wont crank or start

did you try hooking directley to the starter with a boost pack or jumper cables?

actually yes

how much does it cost to get a engine bored out for a bigger and lighter piston while its on my mind

boreing engines cost more then it is worth it mostley trues the cylinder walls but you can get better pistons for the stock stuff. you really want power put bigger valves in it and put a bigger carb on there to and dont forget to put a wicked cam in. when you do all of this work it will cost you some good money i will say to do all of that it will cost about 1.000 dollare unless you put a bigger carb and just a cam then it would cost you about 300 or so just some info to think about

i use to run go karts when i was younger we ran 5 horse B&S mine was bored so far over i had to run a girdle on it to sandwich the top of the head to the bottom of the block to keep the cylinder from breaking away from the block i had a 4 horse head milled flat and fly cut for the valves to clear the exhaust valve was stock the intake valve was cut to the size of a exhaust valve the block was decked i had a steel crank with a wisco 2 ring piston and rod with a modified oil dipper i had a 3 horse flywheel to get higher and faster RPMs out of it i ran it with a outboard boat carb with a fuel pump it ran on methanol alcohol with some oil mixed in to keep the upper cylinder lubed since that stuff is so dry it also had a home made cam i made myself so i cant tell you what the lift was but it was big i had to adapt the coil down since the flywheel was smaller i also ran a 3 stage header as well it was all ported polished and balanced i removed the pull start from the blower housing for 2 reasons one less drag and 2 you couldn't pull start it anyway the compression on this this was way to much it would pull your arm out of socket so i had to get a electric starter kinda like they use on the indy cars to start it every small engine shop i told all this to said this thing will never run but it did it ran strong and won alot of races when i totaled all this up doing alot of the work myself i had 1500.00 in a B&S engine but man it was fun needless to say there wasn't a class for this engine so i had to run it in open class good luck

now that would be a motor i would want to see.

well i would let you but i no longer have it and haven't had for many years i got out of racing as the body wasn't liking it to much anymore but i would say if you can find some go kraters ut there where your at you will find someone with something close to it

well what size carb should i get and what kind of cam

well you would have to know what you are doing with it and if you race vs pull the cam will be diffrent so will the carb

all i really want to do is max out the speed and make this mofo hall ***

If i can get it runing and going im going to be entering it in the lawn mower pull at field day of the past next fall and if they have a race im probley going to enter that to

by the way how much would it cost if i took it to the shop and got them to put the bigger carb and cam on it

so why do you do this fix what you got and chain the pulley and you will be read to go but you will need diffrend pulley for each event

cant you put a chain and sprocket on it or does it need a pully

i would just put a pulley and a belt on it it is more simple and all you would have to do is change the rear pulley if you want or change both