[Fot] Cams

[Dave]

Yes Glen, thanks.
Keep your tips, advice and suggestions coming.
Thumbs up,
DH

Sent from my iPad

> On Jul 17, 2018, at 10:06 AM, timmmurphh--- via Fot <fot at autox.team.net> wrote:
> 
> Thanks for your input on that, Glen.   Very helpful and useful advice.
>  
> Tim
>  
> From: fubog1 <fubog1 at aol.com> 
> Sent: Tuesday, July 17, 2018 12:05 PM
> To: timmmurphh at gmail.com; rbtr3a at cox.net
> Cc: fot at Autox.Team.Net
> Subject: Re: [Fot] Cams
>  
> Yes, lacking access to a Cam Doc, you can use a set of V or bearing blocks, a degree wheel, dial indicator, and a bit of time, checked at 5 cam degrees, works fine.
> I'm still old school though, I plot them out on graph paper!
> That will give you the lobe profile but most folks don't have the full specs on the cam, usually just advertised lift and duration.
> Since the tip of the lobe usually starts to go away first, a simple lift measurement will reveal the worst, best done with a dial indicator cuz some (cheap) cams are ground on different base circles.
> Generally, ramp wear is unusual if the tip is still OK, although there can be exceptions.
>  
> Glen.
>  
>  
>  
>  
> -----Original Message-----
> From: timmmurphh <timmmurphh at gmail.com>
> To: 'fubog1' <fubog1 at aol.com>; rbtr3a <rbtr3a at cox.net>
> Sent: Tue, Jul 17, 2018 12:38 pm
> Subject: RE: [Fot] Cams
> 
> By degreeing the cam using increments of 10 crankshaft degrees (5 camshaft degrees) and then plotting the results in Excel, it is possible to get a very accurate picture of the profile of the cam.
>  
> I’ve attached a spreadsheet showing an intake and exhaust lobe comparison two years apart of our Kastner G3 cam for reference.
>  
> Tim Murphy
> #317 TR4
>  
> From: Fot <fot-bounces at autox.team.net> On Behalf Of fubog1 via Fot
> Sent: Monday, July 16, 2018 6:31 AM
> To: rbtr3a at cox.net; fot at autox.team.net
> Subject: Re: [Fot] Cams
>  
> Generally any obvious wear or pitting would make it unserviceable, but the wear isn't always so obvious.
> You can measure the lift and compare to spec, that will show any worn lobes, but the best way is to find someone who has a "cam doctor". It's a machine that sets it up and measures the complete profile.
> Usually if there is anything apparent that suggests that there may be problems, there are...
>  
> Glen
>  
>  
> -----Original Message-----
> From: rbtr3a--- via Fot <fot at autox.team.net>
> To: fot <fot at autox.team.net>
> Sent: Sun, Jul 15, 2018 6:47 pm
> Subject: [Fot] Cams
> 
> How do I determine if a cam is good or bad. If there are any marks on it does that make it bad. I do know that two of the lifters has pitting on the surface. 
> 
> Ronnie
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