methanol jap

[iamthest1g]

hi lads

how many horses would a propperly sorted jap 4b put out
she started life in a speedway bike and i think the frame might be beyond it,so i was thinking of making a sprinter out of it

[R]

JAP 4B covers a lot of years, and specs, so depends on the year a bit.
Can't see it quoted in the specs anywhere.

Cooper F3 cars went to Manx engines, because it is mentioned the Manx puts out more hp than the 4B at the time (1950).  So you'd be looking at about 35 to 40 bhp (?).

Opethiselps.

[iamthest1g]

JAP 4B covers a lot of years, and specs, so depends on the year a bit.
Can't see it quoted in the specs anywhere.

Cooper F3 cars went to Manx engines, because it is mentioned the Manx puts out more hp than the 4B at the time (1950).  So you'd be looking at about 35 to 40 bhp (?).

Opethiselps.

same here on finding figures
i know very little about it only its 1950 and was supplied in a rotrax frame