I'm not a metallurgist, and I don't even play one on TV, but I don't
think there's an upper limit for how hard you'd like these things to
be other than the potential for them shattering. My ceramic lifters
are harder than you can probably make steel, and they have marvelous
wear characteristics--both for the lifters and the cam.
Now if I could just remember who I got them from. They are absurdly
expensive, but I'd have to say worth it so far. No detectable wear on
either the lifters or the cam after two hard seasons. I've never seen
that before. There's always some wear or some surface cracking.
Bill Babcock
billb@bnj.com
bnj Website for Babcock & Jenkins, a direct and interactive agency
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On May 1, 2007, at 8:58 AM, Barr, Scott wrote:
> And what's the right hardness for lifters/tappets/cam followers? Is
> 70RC too hard, just right?
>
> When I bought a set of Spitfire lifters recently from APT, they
> told me
> that they're hardness testing each batch they get and that the
> batch out
> of which I bought a set were at 70 or so (I can't recall
> specifically,
> 70..71...whatever it takes...)
>
> Scott B.
>
> -----Original Message-----
> From: fot-bounces@autox.team.net [mailto:fot-
> bounces@autox.team.net] On
> Behalf Of Guyots3@wmconnect.com
> Sent: Tuesday, May 01, 2007 10:39 AM
> To: fot@autox.team.net
> Subject: [BULK] [Fot] TR6 tappets/cam followers
> Importance: Low
>
> I am looking for the best quality cam followers out there. (143552).
>
> Whilst I am not made of money, price is secondary to quality.
>
> Apparently, everone, and their brother is selling these things but
> seldom is there any mention of technical specification, such as
> hardness, heat treating, quality of original material...
>
> This is what I found: (converted to US Dollars/No shipping/Tax)
>
> Britishclassiccarspares.com (UK website): $48/set 12.
>
> British Parts North West: $48.36/set 12
> (Rockwell hardness tested at 54, minimum should be 50)
>
> Canley Classics: $63.60/set 12 (standard)
>
> Cambridge Motor Sport: $65.76/set 12 (standard)
>
> TD Fitchetts (UK): $66/set 12
>
> Moss (Europe): $66/set 12 (standard)
>
> Goodparts (Richard Good, USA): $75/set 12 (standard)
>
> Victoria British (USA): $83.40/set 12
>
> Rimmers: $84/set 12
>
> Chris Witor: $84/set 12, Good aftermarket.
>
> The Roadster Factory: $95.40/set 12
>
> Revington TR: $95.88/set 12 (tuftrided)
>
> APT: $101.76/set 12 (standard)
>
> APT: $125.76/set 12 (tuftrided)
>
> Canley Classics: $142.80/set 12 (tuftrided)
>
> Moss Europe: $150.00/set 12 (lightened & tuftrided)
>
> Cambridge Motor Sport: $162.86/set 'Kent'.
>
> My favorites at the moment are:
>
> Chris Witor's
> Goodparts'
> BPNW's
>
> Based on the general quailty of the service and parts that I have
> received from them, coupled with their product knowlege.
>
> I would be most interested in anyone's comments on the above, as
> well as
> any experiences with various cam followers fitted?
>
> Please email me directly on Guyots3@wmconnect.com
>
> Many thanks
>
> Lion
>
> <A
> HREF="http://community.webshots.com/user/vitesse1963";>http://
> community.w
> ebsho
> ts.com/user/vitesse1963</A>
>
>
> </HTML>
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