[Shotimes] don's cams, a report

[Ian Fisher]

Wow that's a mess for you and now me. How does one
check the lobes? A dial indicator? I don't even know
how to begin...

I guess I won't install the timing belt this weekend..

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
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