ARP main stud to lower crankcase clarence issues... and how i solved it - Page 3 - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
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Old 02-04-2013, 12:23 PM   #21
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Quote:
Originally Posted by amc49 View Post
Cutting the studs like he says hurts nothing, if it did I would have blown up plenty of engines. I simply cut them on cutting wheel on bench grinder and keep dipping part in water to control the temp. Little bites like he says, I bet I've done it on thousands of parts. Now if you simply cut or grind on grinder until part turns blue, oh, yeah, you have screwed up. How do you think they are going to balance your high dollar super trick hardened-six-ways-from-sundown connecting rods? By grinding them on a grinder in exact same way. You have to cross a certain threshold of temperature (generally close to the same temp that created the heat treat) to affect the heat treat of a part, anything below that is harmless, and all within the skill and control of the operator.

There is no vibration issue on cutting the girdle webs, it is a strength issue, the cross webs stiffen the girdle up, notched that deep it is a bit weaker is all.
Thanks for the back up
Also the vibration issue we were talking about is how sound goes threw aluminum by removing material you change the frequency and in part you can cause weak points however this isn't a racing engine being reved to 16000 rpm either so we have nothing to remotely worry about
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