Cams, KK vs KHK vs KR
Posted: Sat Nov 30, 2019 12:53 pm
Hi All,
I've had some questions about K cams for a while now and was hoping to finally get some closure on the topic. What has prompted me to write about it now is a friends recent purchase. He bought a KRM motor (in parts). It came with two cams simply marked 1 & 4 and two marked 2KR & 3KR. Here are my questions or assumptions.
1. The KK cams were simply marked 1 through 4?
2. The KHKs starting in 54 used the KK cams?
3. The use of the KK cams marked 1 through 4 continued for the 55KHKs?
4. Probably for the 56KHK since it was a floor model Harley started marking the cams with KHK?
5. My assumption has always been that the KK and KHK cams were the same?
6. I couldn't notice a "slope on the #2KR cam I have?
7. Can my friend use the cam set that came with the KRM? Can you mix KR and what I assume are KK cams?
A friend sent me the lifts he measured on KK and KHK cams a number of years ago. You can see in the table I made that the KK cams at least the way he measured them all show a slightly higher lift? I only have access to a #2KR cam. I measured its lift in the center of the lobe and listed it in the table.
Thanks and looking forward to some final clarity with these cams.
JerryR
I've had some questions about K cams for a while now and was hoping to finally get some closure on the topic. What has prompted me to write about it now is a friends recent purchase. He bought a KRM motor (in parts). It came with two cams simply marked 1 & 4 and two marked 2KR & 3KR. Here are my questions or assumptions.
1. The KK cams were simply marked 1 through 4?
2. The KHKs starting in 54 used the KK cams?
3. The use of the KK cams marked 1 through 4 continued for the 55KHKs?
4. Probably for the 56KHK since it was a floor model Harley started marking the cams with KHK?
5. My assumption has always been that the KK and KHK cams were the same?
6. I couldn't notice a "slope on the #2KR cam I have?
7. Can my friend use the cam set that came with the KRM? Can you mix KR and what I assume are KK cams?
A friend sent me the lifts he measured on KK and KHK cams a number of years ago. You can see in the table I made that the KK cams at least the way he measured them all show a slightly higher lift? I only have access to a #2KR cam. I measured its lift in the center of the lobe and listed it in the table.
Thanks and looking forward to some final clarity with these cams.
JerryR