Board index Flathead Power-Technical Questions, Answers, and Suggestions K-Models 1954 KR lower end

1954 KR lower end

Moderators: Curt!, Pa

Post Wed Apr 19, 2006 10:37 pm

Posts: 2677
Location: Los Angeles, CA
What 45" flywheels and rods will fit into a 1954 KR lower end?

Post Wed Apr 19, 2006 10:55 pm

Posts: 149
Location: calif

Post Thu Apr 20, 2006 2:46 pm

Posts: 303
Location: wooster oh usa
they used the same flywheel setup as in the WR untill 1955 when they changed to the new stronger 55R setup.if you're going to race it i would recommend the S&S flywheels with either stock sportster rods or S&S rods. you have to use their crankpin as the taper is different. the sprocket and pinion shaft are available thru a couple of different companies such as eastern. the pinion shaft for a WR is different than a KR in that they oil differently from each other. one oils thru the side and the other on the end if i recall of the problems with the WR flywheels is that they tend to get cracks around the crankpin area. always get them magnafluxed during assembly

Post Thu Apr 20, 2006 4:35 pm

Posts: 217
Location: Palo Alto, CA
I'm about to list a complete set of the later flywheels with rods, crankpin, etc. if you're interested.



Post Thu Apr 20, 2006 5:30 pm

Posts: 149
Location: calif
barry so very true. i have put togeaher 4 s@s flywheels with r shafts. and sportster rods. best way. then u can get parts for crank pin. r stuff getting hard to find mostley wore out. also tapers for shafts and pin lot of times in old wheels they r egg shaped. wr stuff pretty weak.

Return to K-Models