79cc PREDATOR OUTLAW HEAD - 24.5- 21.5mm gokart racing - mini bike drags 69733

Description

new take off 79cc predator outlaw head with 24.5mm intake and 21.5mm exhaust valves with 5mm stems. stock 22.5mm and 20mm with 5.5 stem valves are replaced with lighter better flowing 5mm stem valves. blended and polished under valve to runners and short radius. milled to increase compression. set-up with lightweight aluminum retainers and 22lbs spring. valve seats cut for the over-sized valves with 3 angle valve job. new take off meaning takin off a new engine that has only been tested at the factory.
these are stock pictures head may vary a little
24.5mm intake valves (stock is 22.5mm)
21.5mm exhaust valve (stock is 20mm)
cut .050" for a 6.25cc polished combustion chamber (approximate)
red aluminum retainers with keepers
ported and polished (see pictures)
lapped-in valves on a 3 angle valve job
22lbs springs
new 5mm guides (stock are 5.5mm)
new take off valve cover
carb insulator
valve cover bolts
head bolts
intake and exhaust studs
intake and exhaust nuts
head dowels
new take off 4.495" stock length push rods
spark plug and spark plug wrench