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Cam comparison A65 #784073 09/12/19 7:11 pm
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Walker22 Offline OP
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I have an old cam and new cam from megacycle cam. I noticed the new cam on the right has a smaller profile where ive got the screwdriver bit leaned on. Im still waiting for the cases to come back from machine shop before assembly but is this normal or should i be concerned? Bonus points for explaining any of the numbers on timing card smile

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Re: Cam comparison A65 [Re: Walker22] #784075 09/12/19 7:12 pm
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Walker22 Offline OP
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sorry i really need to get this photo posting thing figured out....


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Re: Cam comparison A65 [Re: Walker22] #784076 09/12/19 7:15 pm
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MarcB Online Content
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A bit out of focus, no?

The right-side of the cam goes through 2 bushings, with a gap between them. Hence, two bearing surfaces with a gap in the section that isn't used.

FYI: I've switched to imgur for image Hosting.

Re: Cam comparison A65 [Re: MarcB] #784080 09/12/19 7:25 pm
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Walker22 Offline OP
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https://imgur.com/gallery/ZNbWogp

Thank you. My question is why is the profile smaller on the new cam on right?

Last edited by Walker22; 09/12/19 7:26 pm.

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Re: Cam comparison A65 [Re: Walker22] #784087 09/12/19 8:53 pm
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It's a gap for clearance, makes no difference so there is a very wide tolerance on it.

Re: Cam comparison A65 [Re: Walker22] #784144 09/13/19 12:45 pm
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Walker22 Offline OP
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Thanks Gents!


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Re: Cam comparison A65 [Re: Walker22] #784151 09/13/19 1:36 pm
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Nick H Online Content
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The numbers on the card tell when the cam will begin to open and finish closing your valves at degrees before or after top or bottom dead center of the piston. (ex: BTC = Before top center)
There's more info there but you and I will have to do our homework to understand it better.

Last edited by Nick H; 09/13/19 1:38 pm.

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Re: Cam comparison A65 [Re: Walker22] #784160 09/13/19 3:06 pm
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Allan Gill Offline
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Need the beer goggles to read it. laughing


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Re: Cam comparison A65 [Re: Walker22] #784597 2 hours ago
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Gary E Online Content
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Use a photo Hosting site other than Photobucket. For me I use postimages.org.


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