Board index Flathead Power-Technical Questions, Answers, and Suggestions K-Models KH or KHK

KH or KHK

Moderators: Curt!, Pa

Post Mon Nov 07, 2005 5:53 pm

Posts: 228
Location: Burlington Iowa USA
Does anybody know the difference between KH cylinders / heads and KHK cylinders / heads? And how to identify them? I have a '56 KHK with pretty screwed up cylinders and am considering putting some other KH's I have on it. But if the cylinders that came off it are KHK and worth the effort I might repair them. The parts book lists different part numbers but I've compared and I can't see much difference. Any thoughts?
Larry

Post Mon Nov 07, 2005 6:59 pm

Posts: 919
Location: RENO,NV. U.S.A.
KHKcylinders have polished ports,and KR size valves. I used to own 3 KHK complete engines,still have a spare set of KHK cylinders. brewski

Post Mon Nov 07, 2005 7:25 pm
xlr

Posts: 149
Location: calif
big diffrence is kh cly. is longer than k

Post Mon Nov 07, 2005 7:44 pm

Posts: 919
Location: RENO,NV. U.S.A.
That is true,the obvious difference is in the base flange. BREWSKI

Post Mon Nov 07, 2005 9:40 pm

Posts: 228
Location: Burlington Iowa USA
khk and kh are both the long stroke motors. so cylinder length would be the same correct?

Post Tue Nov 08, 2005 4:00 am

Posts: 20
Location: FINLAND
I think only difference between KH/KHK cylinders is polished ports and combustion chamber.RUB-BOY

Post Tue Nov 08, 2005 11:00 am
Pa Site Admin

Posts: 5769
Location: Ohio USA

As I recall from my 55 KHK and what the old timers told me when I owned her. Polishing was really the only differences between the two. The KHK was polished everywhere flow restriction could be a factor, from intake, to cumbustion chambers, to exhaust. I almost positive on this. "Almost" :wink: Pa

Post Tue Nov 08, 2005 11:12 am
xlr

Posts: 149
Location: calif
yes kh and khk cyl. same. polished on khk not kh. heads same u can use kr heads they help a lot. when u install heads try to bring to kr specs

Post Tue Nov 08, 2005 8:37 pm

Posts: 228
Location: Burlington Iowa USA
Thanks for the info,
I thought there wasn't much difference. I'll use my better KH cylinders.
Larry

Post Wed Nov 09, 2005 9:02 am

Posts: 1050
Location: Greenbackville, Virginia, USA
KH ports can use a LOT of cleaning up. Mine had a lot of really rough spots; cleaning up and polishing only took a couple of hours. Was worth it. G 8)


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