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Author Topic: I need a cam, but which cam......??  (Read 1087 times)

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Offline Oli

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I need a cam, but which cam......??
« on: November 14, 2009, 04:57:40 pm »
I recently bought a K2 CB750 for a resto project. The previous owner inherited it from a customer who wanted it to look like a harley >:( He started to do engine work for the guy then the money dried up. 25 Years later is where I come in. The engine has been bored out to an 836 and I am yet to retrieve a cam for it. (Lost in the ages)

My question is will a std cam leave the engine usable/smoothe with little or no other work to head? If I must use another cam are there any mild enough that wont require new springs and retainers but still improve ridabilty?
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Offline bucky katt

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Re: I need a cam, but which cam......??
« Reply #1 on: November 14, 2009, 05:09:41 pm »
i wouldnt run a stock cam with an 836, it will allow too high of a static compression. go for a mild one from megacycle or webcam maybe
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Of all God's creatures there is only one that cannot be made the slave of the lash. That one is the cat. If man could be crossed with the cat it would improve man, but it would deteriorate the cat.
Mark Twain - Notebook, 1894

Offline Oli

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Re: I need a cam, but which cam......??
« Reply #2 on: November 14, 2009, 10:03:54 pm »
So are you suggesting a cam with slightly longer duration but std lift?
Would I be mad not to port the head..?
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Offline bucky katt

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Re: I need a cam, but which cam......??
« Reply #3 on: November 15, 2009, 12:36:22 am »
more duration AND lift, if you can afford to have it done then yes, have it ported. sohc member MRieck is a wizard with these heads, he can also recommend a specific cam for you too.
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Of all God's creatures there is only one that cannot be made the slave of the lash. That one is the cat. If man could be crossed with the cat it would improve man, but it would deteriorate the cat.
Mark Twain - Notebook, 1894

Offline Oli

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Re: I need a cam, but which cam......??
« Reply #4 on: November 15, 2009, 03:51:51 am »
Not sure that i can justify sending my head to the states for a port job (read many of the posts and it seems he is highly regarded though :-\)May need to find a guy in Oz.

My only concern with going for a cam with higher lift is the need for new springs, retainers, beefed up primary etc.....I am not really after power (Have another bike for that) I just want to make the 836 engine that I ended up with rideable with no annoying flat spots.
I would consider doing more to the engine at a later date but for now have to spend most of the finances on the frame, wheels and tank.

After reading many of the posts it seem the engine can be a bottomless pit for the brave and deep pocketed.. :D
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Offline Whaleman

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Re: I need a cam, but which cam......??
« Reply #5 on: November 15, 2009, 04:21:49 pm »
I have an 836 with a stock cam that is fast enough for me. Dan
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Offline wrenchmuch

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Re: I need a cam, but which cam......??
« Reply #6 on: November 15, 2009, 08:33:58 pm »
If you don't have a cam already then you might as well go aftermarket .I don't think you can get a new Honda cam anyways . I have a webcam #41 and although the published numbers for the cam don't match what I found when I set it up I am happy with the performance . I have a 836 with Kibblewhite valves (std),guides ,and springs and mild porting . Many swear by Megacycle around here though .
Hope this helps.
 Mike
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Offline Whaleman

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Re: I need a cam, but which cam......??
« Reply #7 on: November 16, 2009, 04:47:50 am »
A lot of people here have stock cams they would sell cheap. Dan PS I bet Mike Rieck has 25.
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