Send the cams to me. I developed another source for the A-10-A.
Chuck
> On Oct 4, 2013, at 12:15 PM, "Barr, Scott" <sbarr@McCarty-Law.com> wrote:
>
> << you can get a dynamite cam profile put on that cam at Moon Equipment.
You
> cannot E-mail them but phone and ask for Bill Jenks >>
>
> Sadly, not any more. Moon told me recently that they are OUT of the cams
> business. Bill Jenks has retired. I damaged my A-10-A cam some time ago
and
> was not able to have them grind a new one for me.
>
> Scott B.
>
> -----Original Message-----
> From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf
> Of Joe Guinan
> Sent: Friday, October 04, 2013 2:06 PM
> To: fot@autox.team.net
> Subject: [Fot] Kastner A7 in 1147 Spitfire Questions
>
> Friends,
>
> I've finally installed the used Kastner A7 cam in my 1147 race engine and
am
> having trouble getting it timed correctly. When I set the #2 valve (intake
on
> #1 Cylinder) to open at 42 degrees, I cannot get the closing number
anywhere
> close. It's at 60 something on closing. Haven't even checked where the #1
> valve starts to open, as this seems so wrong.
>
> Specs I received from FOT Aaron Johnson are below.
> - Inlet opens 42 Inlet Closes 76
> - Exhaust opens 76 Exhaust close 42
> - Duration 293 Lift at valve .410
> - Checking clearance at the camshaft is .013
> - Rocker arm clearance is .020
>
> Information I received from Kas himself is close to the above; "That cam
was
> done early on but it will work fine. The timing is Inlet 42-71 and the
exhaust
> is 71-42. The cam has 293 degree duration and .410 lift at the valve. As I
> remember the checking clearance is .013" and the running clearance is
.020"."
>
> Kas also added, "Just for your information I believe that cam is done on a
> factory billet meaning that the base circle is very close to the stock
> diameter. Check to see if it is. If so, you can get a dynamite cam
profile
> put on that cam at Moon Equipment. You cannot E-mail them but phone and ask
> for Bill Jenks and then tell him you want the A-10-A. This will go onto
that
> cam fine if it is the factory billet I used for lots of the camshafts. That
> was the latest grind (54 - 90 and the gross lift is .517" )and it was
terrific
> but you do need high compression to deal with it."
>
> Note the difference in closing measurements in the two sets of specs?
>
> I know I have TDC on the crank set correctly. I'm seeing 42 degrees on the
> degree wheel when the dial indicator on the top of the pushrod shows the
valve
> has opened .013 inch. The valve stays open like it should for most of a
> rotation but is only at 60 something on the degree wheel when it has closed
to
> only being open .013 inch.
>
> What am I missing / not understanding?
>
> I already have the head installed, but I'm about ready to pull the cam out
and
> get a new one, or follow Kas's suggestion to send it out for a regrind.
> I am running high compression with "pop-up" pistons. Something about this
cam
> just doesn't seem right, and adds to my suspicions about running a used cam
in
> this newly rebuilt engine. Hate to spend the money and time, but if I have
to
> do it, I might as well do it now.
>
> Thoughts and opinions welcome...
>
>
> Thanks,
>
> "Jedi"
> Joe Guinan
> Fremont, NE
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