[Fot] Kastner F cam

[Larry Young]

My best effort to explain the terminology is at 
http://tildentechnologies.com/Cams/CamBasics.html.  Zero advance or 
straight up means the exhaust and intake lobe centers (or high lift 
points) are split equally before and after TDC. 0.010 is not the best 
way to time a cam because it is more difficult to measure accurately due 
to a lack of sensitivity (large angle change required for small lift 
change). There are a million ways to do it and everyone has their 
preference.

  - Larry


On 12/23/2016 8:46 AM, Jerry Van Vlack via Fot wrote:
> Friends, can someone explain installing a cam with xx advance, somewhere I saw a reference to doing a cam installation with a 4 degree advance. Does that mean that if the valve opens at xx degrees that it should be set to open at xx minus 4 degrees and what purpose does that serve? Is this the same as using .010 or some other checking clearance. Seems that these two variables are related and one should use one or the other method but not both.
> Thanks, I'd like to learn more about this stuff.
>
> JVV
>
> ---- Duncan Charlton via Fot <fot at autox.team.net> wrote:
> If I follow what you’re talking about, it should make no difference whether you use 0.010” or 0.050” as long as one is consistent about it.  If the intake opening and exhaust closing happen at the same number of degrees before/after TDC the cam has been installed with 0˚ advance.
>
> Duncan Charlton
> Elgin, Texas USA
>
>
>
>> On Dec 22, 2016, at 6:25 PM, Jack Wheeler via Fot <fot at autox.team.net> wrote:
>>
>> Hi Mike.  Be careful.  The specs on Steve's sheet are the same as the specs I quoted from Kastner's Competition Manual in an earlier email.  According to Kas's Manual, those clearances are to be used at a .010 checking clearance.  I'm not sure why you couldn't use them, but you would have to use the .010" checking clearance, not .050"  Good Luck.
>>
>> Jack Wheeler
>>
>>
>> From: Michael Haberthur via Fot <fot at autox.team.net>
>> To: Steven Belfer <steve at artwithcars.com>
>> Cc: triumph friends <fot at autox.team.net>
>> Sent: Wednesday, December 21, 2016 5:35 PM
>> Subject: Re: [Fot] Kastner F cam
>>
>> That's great. I have one on the shelf but had no idea where to start on timing.
>>
>> On Dec 21, 2016 2:31 PM, "Steven Belfer via Fot" <fot at autox.team.net <mailto:fot at autox.team.net>> wrote:
>> I have a sheet for the F-cam that my dad made in 1968   Pix attached
>> <image1.JPG><image2.JPG>
>> ~Steve
>>
>>
>> On Dec 21, 2016, at 10:47 AM, John Styduhar via Fot <fot at autox.team.net <mailto:fot at autox.team.net>> wrote:
>>
>>> How about Kas Kastner?
>>>
>>> On Wed, Dec 21, 2016 at 9:06 AM, Dennis DeLap via Fot <fot at autox.team.net <mailto:fot at autox.team.net>> wrote:
>>> A M I C I
>>> Has anyone ever figured out data for degreeing the F cam at .050 tappet rise?
>>>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/cartravel@pobox.com
>
>