[Shotimes] don's cams, a report

[Ian Fisher]

As I think about this, I wonder if one of your intake
cams was from a 3.0 and one was from a 3.2. IIRC, you
can tell the difference by looking at the KOA casting
on each cam. I believe that the 3.2 casting was ground
down but still visible. If Doug checks that, I'd
really like to know what he finds out. If the cams are
indeed mixed that's probably how this happened.
"Allegedly" this is why there were so many bad SHOshop
cam sets.

Ian

--- Donald Mallinson <dmall@mwonline.net> wrote:

> I think you got the wrong idea, the ENTIRE cam was
> ground off.  Not just 
> one or two lobes.   As Doug explained it, when the
> cam is reground, the 
> grinder can either take the time to make sure that
> the lobes of the 
> original grind are straight up or he can eyeball it.
>  Apparently these 
> were eyeballed.  Thus ALL lobes on each cam were off
> the same amount in 
> the same direction.
> 
> The adjustable sprockets allow you to pretty much
> put the cams where you 
> want.  Doug says that just taking out the dowel and
> using the slop in 
> the bolt holes can get as much as 6-8 degrees, but
> using the adjustable 
> sprockets allows you to set up the cams the way they
> were supposed to 
> be, and start the tuning from scratch.  Then advance
> or retard as needed.
> 
> Ian, I would recommend that while the engine is
> still easily accessable, 
> that you check the cams and degree them to make sure
> where they are.  
> That is a good idea any time you put in a cam, but I
> guess we got used 
> to the idea that cheap aftermarket cams for Chevy's
> and Fords were all 
> done right.  Reground cams apparently may not have
> the precession that 
> new cams have.
> 
> Don
> 
> Ian Fisher wrote:
> 
> >If that is the case, why not exchange them for
> another
> >set? It seems like using adjustable sprockets won't
> >get them timed properly very easily. If they are
> >incorrect to start with adjustable sprockets will
> only
> >get you so far...
> >
> >This is interesting. Keep us posted. My +20 cams
> are
> >installed in my 3.2 which is waiting to be
> installed
> >sometime this month.
> >
> >Ian
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes
> 


		
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com