Flypaper 2

I would go as far as you can go without the valves hitting the head, even cut pockets for the valves. Little need to worry about valve float without the inertia of lifters and rocker arms.

tkg

My Feedback: (1)

Messing with flatheads and compression is a black art. To much milling and the air can't turn the corner to get to the combustion chamber.
About the best info is from the gokart racers and the JR dragsters using the 5hp briggs. Lots of unobtainum stuff.

4 stroken ron

My Feedback: (29)

OH yeah! ten-4 on the unobrainum. I was browsing a JR dragster web site the other day and a guy was selling "ready to race"
motors for $8500. I thought that was a little precious.
Ron

Flypaper 2

I worked for an automotive engine rebuilder back in the late 50s, early 60s. Did a lot of flat head Ford V8 and dodge 6cyls. as stock car engines. This was before production engine rebuilding came in. All the engines were hand built. Right about keeping the airflow as straight as possible from carb to cyl. Also keeping the cross section area the same from carb to cyl. Thinning down the valve head to lighten it and allow more airflow. each little thing added a little more HP.

Prop Nut

My Feedback: (3)

Umm....I think I will leave mine alone I am pretty happy with my perfomance. It will fly my Balsa USA Fokker DVII just fine.

captinjohn

TKG: How do you find this go cart forum? Thanks Capt,n

Antique

My Feedback: (4)

Google shows 678,000 results

Rupurt

What number is it?

captinjohn

Thats a lot to pick from I think thats a good way of saying "I dont,t know" Hey Rupurt...what time of day is it in Africa? Good day....Capt.,

tkg

My Feedback: (1)

Like Ralph said thousands of site. Briggsracing.com,,,stingerengines.com,,,,jrdragste r.com

Rupurt

Captin, it depends when you ask.