[Fot] TR 3 / 4 Distributor gear failure

[tr4racing at googlemail.com]

That was my impress that the stock items do work properly.
Why it is so difficult to make this gear? Is there a mistake value in the blue prints?
A reground cam never can do the same profile as a new blank.
Maybe it is time to find out more about this issue and solve it.

------Originalnachricht------
Von: yellow04 at tr4racer.com
An: tr4racing at googlemail.com
An: fot
Betreff: Re: [Fot] TR 3 / 4 Distributor gear failure
Gesendet: 27. Sep. 2011 21:34

Are you talking about OEM reground cams or new chilled iron cams?

I have never seen the issue on an OEM cam, but I have seen it countless 
times on new cams. Cutting that gear is pretty tricky, I suppose.

My solution is only run regrinds.

As far as your question about nitriding, if the cam gear is not cut right, 
hardening will just waste more money.

Henry
yellow04 at tr4racer.com
----- Original Message ----- 
From: <tr4racing at googlemail.com>
To: "fot" <fot at autox.team.net>
Sent: Tuesday, September 27, 2011 2:10 AM
Subject: [Fot] TR 3 / 4 Distributor gear failure


> Dear FOT,
>
> I'm on search about information why this gear somtimes wear out quickly 
> and sometimes it lasts aons.
>
> For my part I do see two different types of cam gears:
>
> 1. Teeth with sharp edges ( like stock cams)
> 2. Teeth with camfered edges
>
> In my case only the cams with camfered edges seems to wear out the stock 
> gear wheel.
>
> Can anyone confirm this? Or was it just bad luck and it happens to sharp 
> edged cams too?
>
> I would like to plasma nitride hardening the stock wheel to get a better 
> protection. Any idea if that will work?
>
> Cheers
> Chris
> Gesendet mit BlackBerry von Vodafone
> _______________________________________________
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>
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