[Spridgets] john , NJMP in millville info?

[Hal Faulkner]

My SPVP3 cam from APT came with a 102 Degree timing spec.
Hal

-----Original Message-----
From: spridgets-bounces+hal=katemuir.com at autox.team.net
[mailto:spridgets-bounces+hal=katemuir.com at autox.team.net]On Behalf Of
John Caffrey
Sent: Thursday, September 25, 2008 6:27 AM
To: Guy Weller
Cc: 'Spridgets'
Subject: Re: [Spridgets] john , NJMP in millville info?


Guy Weller wrote:
> Matt,
>
> <<the timing gear was "rekeyed" to 102 teeth..>>
>
> Not sure that really makes any sense.  But "Rekeyed to 102 DEGREES might.
> The cam shaft may have been set to 102 degrees ATDC for max lift on #1
inlet
> valve. This could be done with vernier timing gears, a stepped woodruff
key
> or a re-cut keyway.
>
> Depending on the cam shaft specification 102 degrees could make sense.
>
> Guy
>
>
I think Guy is correct, and if it was timed at 102 degrees we know why
there is intake valve interference. The cams I've used had recommended
timing at 110 degrees ATDC. With the 948 we advanced 2 degrees and
that's a long way from 102. Typically the cam will retard as the chain
wears, so it may have been incorrectly assembled?
John
Fogelsville, PA