Greg,
I had that done on my Spit engine when I had it rebuilt. I did it more
as a measure of longevity than anything else. The cam is a very hard
piece of metal and any wear would more likely occur on the block
surfaces. It just makes sense to have this "wear point" made out of a
replaceable material.
Regards,
Joe
"Hutmacher, Greg" wrote:
>
> I'm very curious about this cam quality issue since I have been thinking
> about buying BPNW's cam setup for my six. What is the collective thought
> concerning Kastner's suggestion in the comp prep manual about boring out and
> installing cam bearings in the TR6. I was not planning to do this since I
> don't run the engine at high rpm's for long periods (I don't race), but I'd
> like to hear from some listers who have tried it without installing cam
> bearings and those who have. And, what is the consensus on which is the best
> cam (source, brand, and even part number if you know it) for someone wanting
> to get up to 135 to 150 horsepower for reliable street use? Is re-ground or
> new better? Regards, Greg Hutmacher
>
> ////////////////
> Date: Tue, 30 Mar 1999 16:33:16 -0600
> From: "Bob Kramer" <rgk@flash.net>
> Subject: Re: Cam for Triumph TR6
>
> > So, I really can't tell you
> > at this time whether it was a good decision or not. However
> > those people at BPNW claims that they have sold several hundred
> > without any complaints.
>
> That "without any complaints" is inaccurate. I have a BPNW Road Rally
> camshaft in my car. Back in 1993, when I bought it, I had to send it back
> at least one (I think it was 2) because the locating groove was oversized.
> If you've ever opened up a TR6 and pulled the camshaft, this area does not
> get a very good supply of oil and forms a sort of grinding paste over time.
> They checked stock and found them all oversize! They corrected that problem
> by having all the ones in stock re-welded and re-cut, and presumably have
> maintained this procedure through the years. I really like the grind
> (although I can't tell you what it is), but it has always made a racket. I
> have to readjust the valves all the time. I've put 10K on it, and I'm
> running out of adjustment. I'm suspicious that I am loosing the lobes to
> premature wear (equally across all 12?), but it still runs great. The
> camshaft regrinds need to be properly hardened and I'm worried that's the
> cause. For that reason, I'll be looking for a better quality unit soon!
>
> Bob Kramer
> Hill Country Triumph Club
> rgk@flash.net
--
"If you can't excel with talent, triumph with effort."
-- Dave Weinbaum in National Enquirer
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