Also need to mention that a timing advance key is worth some more power. Jersey Bigfoot claims to help a lot. I have not done mine yet, but its on the list of things to try for cheap power.
Also need to mention that a timing advance key is worth some more power. Jersey Bigfoot claims to help a lot. I have not done mine yet, but its on the list of things to try for cheap power.
I like to use these adapters from Al with those intakes, lets you bolt on a lot of different carbs if one would decide to run more compression, cams etc.
Your offer is valid? you can send in Russia?
Just thought I would show the difference between heads, cheap way to add compression/hp to the 16, 18 and 20's. the left is the 12/14hp the middle is the 16 and right is the 18/20. you can see the difference in the chambers which will add compression, all fit each other and use the same valves, port size N valvetrain. the steel heads gaskets help also. these heads can also be installed on the 23hp but you need to switch to the 20hp intake and change the exhaust flanges and add the hi torque starter. carb jetting and or replacement will need to be made and is better suited for the guys that don't run the governor.
Graphite
steel
Great post Nubs, thanks for the clear concise info.
The pictures make the info very clear.
The trouble with retirement is.... I never get a day off !!!!
Thanks plumcrazy.
just a few notes that i use if i don't have any numbers to work with, should cover 99% of what ya need.
this link will let ya plug in your model # and the whole parts break down is all there.
Lawn Mower Parts, Small Engine Parts & Much More! | PartsTree.com - Briggs, MTD, Toro, Cub Cadet, Husqvarna, Troy-bilt...
just click on the briggs logo
14HP 480cc 2.70 bore 2.60 stroke
294447-0445-01
Heads
#1 / 809200
#2 / 809201
Head gaskets
806085s graphoil
807986 Steel
gasket set
808704
------------------------------------------
16HP 479cc 2.68 bore 2.60 stroke
305447-3075-g1
heads
#1 / 809200 (some times)
#2 / 845716
head gaskets
806085s graphoil
807986 Steel
gasket set
808704
---------------------
18HP/20HP 570cc 2.97 bore 2.76 stroke
356447-0213-b1 except the two barrel intake/carb
heads
#1 / 809185
#2 / 809186
head gaskets
690888 graphoil
805653S steel
gasket set
841188
---------------------
23HP 627cc 2.97 bore 2.76 stroke
386447-0079-g1
heads
#1 / 845713
#2 / 845714
head gaskets
842622
gasket set
842658
-----------------
Please always double check the #'s as this is just my guide
Nubs your are sooooooo correct!! You are the Man!!!
HUSTLEMANIAC and a HONORARY MEMBER of the
BIGFOOT ALUMNI
Looks like Al shortened up the two barrel adapter N turned the flange horizontal, the top of that 36mm is only 3.5" above the rocker covers.
Not sure this belongs here. this is what happens when a guy lets a welding BB er' 2 pop into the intake of a race motor. Sure glad It wasn't me