Rally 12.5 horse Briggs

i have run into a problem on my mower and i need some advice/help my decompression value on my cam has broke. would it be easier to buy a new cam or replace my 12.5 briggs with a 18.5 briggs that i have on another mower? thanks for any help

Paint job is fweekin' Killer!!!   

thanks its been painted for a year or so has scratches and starting to fade thought about painting everything black or redoing the paint job that is on there

I'm liking the build your doing, if you need any engine parts let me know I got a whole tub full

I'm going to have to trade my 12.5 out for a 18 I got sitten in my shop Becuase my cam has broke.its the decompression value on the cam and I don't know how to fix it would it be easier to fix or trade it out for the other motor?

Jugghead90 wrote:

i have run into a problem on my mower and i need some advice/help my decompression value on my cam has broke.  would it  be easier to buy a new cam or replace my 12.5 briggs with a  18.5 briggs that i have on another mower? thanks for any help

Depends... For one with very little wrenching talent, it'd be easier to swap engines than camshafts. Also, if budget is a big concern, it is cheaper to put on an engine that you already have, rather than buy a camshaft.

thanks thats what i thoought but i didnt know how hard it was to change them out? but i can pull themin my shop and swap them out sitten side beside. but i will try to get a new cam shaft when i get extrs money. just to have a extra motor. thanks for the advice and help

how much will the 18.5 have horse help me from a 12.5? how much faster will that make it run?

motor wont make it go faster if you only change the motor, its the gearing that makes the top speed go up. acceleration will go up with a bigger motor but not top speed unless your motor cant pull the tractor in its fastest gear( usually 6th)

Alright thank you I don't want it go much faster so that will be good. I just didn't know if it would change the top soeed