Quote:
Originally posted by G-Forces
I wouldn't put reground cams in my car if you paid me. Just my $0.02.
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I have to admitt I used to have the same attidute, then I decided to work over an engine that new billits were unavliable for, and the tuner simple recomened a regrind. I was very scepticle at fisrt, but asked around, friends, people in my car club, guys in the service parks, other tuners, and they all said the same thing. Regrinds have a bad reputatin they dont deserve.
The only problems they may have is if a cam from a very high milage engine with a lot of wear on it is reground, there might not be enough meat left to get a good new profile, or if there was heavy pitting from excess wear on the lobes it could weaken the cam.
However a good reliable shop will not even consider doing a regrind to a cam in this condition, as I found out when the fisrt cam I took in had come from a high milage engine, had some sever pitting and was no longer completely straight. (im not kidding!)
But you can get the same problems with a new billit. There might have been a flaw in the casting process, an unknown weak spot may exist that dosnt show up will you hit 6,000rpm. Or it may have been badly ground when its intial shape and bearing surfaces were made.
Iv actualy talked to a guy who only use's regrinds in his race car after a new billit failed and destroyed a new motor during a race. His theory was that a regrind had been tested before, if it was going to break it would have a long time ago, but you can't be so sure with a new billit.
Its a slightly flawed theory, but still isnt totaly stupid.
After doing a little resurch into regrinds and then having experiance using them I dont have a problem with useing them again in the future.