FW: Re: [Shotimes] don's cams, a report
don donelson
onebadsho@hotmail.com
Sat, 01 Oct 2005 10:45:32 -0400
I have the .40 cams .... and sometime in the near future plan to get them
dynoed. I didnt degree them in though.
I like to know if Josh T has made any comments as to his cams and these
variances ?
I may take my car to doug also to have him look at the cams too .. to see if
they are in fact degreed correctly and if Don M. problem exists with my cams
as well.
dond
>From: Donald Mallinson <dmall@mwonline.net>
>To: SHOtimes <>
>Subject: Re: [Shotimes] don's cams, a report
>Date: Sat, 01 Oct 2005 07:18:48 -0500
>
>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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