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I'm rebuilding the engine for my 67 MGB. I had the old stock cam reground by D.
Elgin Racing Cams in Redwood City. http://www.elgincams.com/ I opted for the
7008-10 grind. They suggested (almost insisted) that the cam be hardened after
grinding. I was told the same thing, MG cams are soft, Actually that the
hardining process is only a few thousands thick. When a cam is ground this
hardined layer is removed. So it is essential that the cam be hardened after
grinding. The charge for the hardining was about $60. The engine is still on
the stand so I cant say how this cam is gona work. But I'll let ya all know...
David Councill wrote:
> On the cam topic - I installed a performance cam in my 71 BGT many years
> ago. First, I sent an old cam to Isky Cams to be reground. So first mistake
> is I sent one of my worn (mild wear) cams figuring they would fix it.
>
> I installed the reground cam and never noticed any performance difference
> at all on my rebuilt engine.
> But a year or so later, at 40k miles, I noticed no movement on some valves
> when I was adjusting the valve lash. So I pulled the cam and found that
> some of the lobes were completely gone and others well rounded!!
>
> Isky claimed MG cams were soft and wore easily or something like that. So I
> put in another old stock cam maybe 90-100k miles ago with no problems. And
> haven't tried any other cam since then. And I won't - however, at some
> later time, I might consider it if other listers know a source of good
> reliable performance cams at a reasonable price (and hopefully a guarantee).
>
>
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