[Fot] Cam bearing

[robertten1 at aol.com]

Amici,


I missed the full thread for this Cam Bearings question, the early
Spit 1300 Cams had smaller bearing journals compared to the 1200 and 1500.
APT sells cam bearings for the larger cams requiring the blocks to be bored
out.  In my case I bought a cam for my 1500 from Rick Cline and was advised
against this machine work as this is a weak spot on the 1500 blocks.  So he
sold me a cam that would use the factory cam bearings for the early 1300 which
will fit the 1500 block without machining.  This is something to check out for
your application.  I do have a set of the APT cam bearings, that I didn't use,
for the large journal cam(s) that I might let go cheap.


Good luck in your
quest,
Bob T



-----Original Message-----
From: Spitfire Racing
<spitfire_racing at twcny.rr.com>
To: 'Chuck Gee' <chasgee at aol.com>; charly
<charly at mitchelplumbing.com>
Cc: fot <fot at autox.team.net>
Sent: Tue, Sep 9,
2014 6:32 am
Subject: Re: [Fot] Cam bearing


Yes, the FE (small crank) was
made to accept cam bearings, but not so the
later 1300 FK prefix (large crank)
which also followed through to the 1500
Spitfire.

Russ Moore
Spitfire #49
-----Original Message-----
From: Fot [mailto:fot-bounces at autox.team.net] On
Behalf Of Chuck Gee
Sent: Monday, September 08, 2014 10:06 PM
To:
charly at mitchelplumbing.com
Cc: <fot at autox.team.net>
Subject: Re: [Fot] Cam
bearing

First google search revealed (sorry, just being a smart ass):
http://aptfast.com/ShowItem/103410%20Cam%20Brgs,%20Spitfire%201147%20Early%2
0
1300.aspx

See description in parts list.  It says to Bore Block 1.9680 +
.0015/.0000.
I'd still take a set of bearings with you to the machine shop and
have the
double check.

The 1300 block was made this way, so your guy can use
data for it as a
reference.

Chuck

> On Sep 8, 2014, at 6:49 PM, Charly
<charly at mitchelplumbing.com> wrote:
>
>     BODY { font-family:Arial,
Helvetica, sans-serif;font-size:12px; 
> }Amici,
>
>     does any one have the
specs for a Spitfire motor cam journal hole 
> in the block with out the
bearing?
>
>    I'm trying to fit bearings in my TR6 block and need to get the
iron 
> bearings bored to fit the Spitfire type bearings and I'm not having 
>
success in find the dimension
>
>    Thanks,
>
>    Charly Mitchel
>
>    TR6
#44
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