Board index Flathead Power-Technical Questions, Answers, and Suggestions K-Models hi are these kk cylinders ??

hi are these kk cylinders ??

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Post Tue Nov 30, 2010 7:23 am
jib

Posts: 575
Location: devon,england
are these kk barrels or possibly a good hoe tuner ?

looking at the cut out fins for the mag and the narrowness of the valve seats.
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Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Tue Nov 30, 2010 11:59 am

Posts: 767
Location: CA USA
I don't recall the KK or the KHK having a magneto. I recall them both being hotrod street bikes with circut breaker/coil/battery ignition setup.

Post Tue Nov 30, 2010 12:22 pm
jib

Posts: 575
Location: devon,england
thanks for the reply beachdog,
must have been done afterfactory then.
regards jib
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Tue Nov 30, 2010 6:57 pm
Pa Site Admin

Posts: 5769
Location: Ohio USA

I don't know for sure but maybe they did run a mag when dirt tracking ??

Post Tue Nov 30, 2010 11:23 pm

Posts: 391
KK cylinders would have highly polished ports. And no magneto relief from stock. All KK engines were points ignition.
Robbie

Post Wed Dec 01, 2010 7:41 am

Posts: 587
Location: Crewe, Great Britain

Hi all,

AFAIK, KK and KHK only had bigger reliefs in the heads for extra cam lift clearance, no special polishing jobs on the cylinders.

In later years anyone could have mounted a Fairbanks Morse on a K or KH, there's no need then to trim the cylinders.

Which makes me thinks these are KRM cylinders since KRM and early KHRM were fitted with vertival Wico mags. These are so tall they indeed required the fins to be trimmed by the factory...

Patrick

Post Wed Dec 01, 2010 11:36 am
jib

Posts: 575
Location: devon,england
curiouser and curiouser ,said alice.

thanks patrick.

my kh type barrels are very smouth in the ports ,will post a pic as soon as they have had the carbon removed ,they came with the wrong valves installed very big heads and much thicker stems
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Wed Dec 01, 2010 12:56 pm

Posts: 87
I believe both the 55 and 56 KHK had polished ports (and polished external surfaces of heads too).

Post Wed Dec 01, 2010 1:04 pm
jib

Posts: 575
Location: devon,england
was there a different part no for the khk heads ?
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Wed Dec 01, 2010 4:20 pm

Posts: 159
Speaking of pictures, could someone show me a clear picture of the top of a k or kh barrel and combustion chamber of head please. I'm doing some surgery on a BSA M20 sidevalve and need some clues. Of course i could ask my mate to take a head off his Kh but i think that's asking too much!

Post Wed Dec 01, 2010 4:41 pm
jib

Posts: 575
Location: devon,england
here you go wilko
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Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Wed Dec 01, 2010 5:39 pm

Posts: 159
Thanks Jib, A dremelling i go! I have about 5 spare heads and barrels to play with and these motors are a dime a dozen down here as they were also used for industrial purposes as well as bikes (gutless)!Any more clearer ones of the heads would be appreciated from anyone. Thanks!

Post Wed Dec 01, 2010 6:04 pm
jib

Posts: 575
Location: devon,england
hi wilko send me your email address and i will let you have some full size hi definition pics
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Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Thu Dec 02, 2010 4:38 pm

Posts: 159
Those pictures are perfect Jib, thanks . We already got stuck into some mig filling yesterday and will send some pictures of the result and opinions.We are only experimenting with cast iron heads at the moment until we get some improvement.

Post Fri Dec 03, 2010 3:01 am
jib

Posts: 575
Location: devon,england
wilko the kr had better shelf shape ,think there is a picture on beauty of speed website. or i can send you a photo of the drawings
Dude, check out that jibhead, he's crazy. Hasn't been sober for 40 years

Post Fri Dec 03, 2010 1:35 pm

Posts: 159
That would be appreciated, thanks.


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