Quote:
Originally Posted by Dwight Southerland
Really?? Alan, I'm not criticizing or correcting that statement, but I would really like some evidence. I have been involved in several "exotic" European-based engine builds in the past few years and every one of them were factory designed with TruArc type lock rings. These were everything from turbocharged four cylinder to NA 12 cylinder that run over 10K+ rpm and cost over $100K. I think the quality of the ring and the assembly specs are important for integrity, but I don't see failures when properly done. The Japanese like the wire locks because they are cheap (but effective).
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I have been playing with engines since about 1962. In the early days, there was no such think as a spiral lock, double or single. TRW was the first high per piston to be made that was affordable fur us broke country boys. The first pistons had single tru arc rings. You know, I have heard a lot of people say how bad these clips were and I have been building engines on a regular basis since early 70's. If the clip is installed "correctly"(flat side out)--I personally have never seen a clip come out. And then later people went to double clips and I have never seen one of these come out either. Yes I have heard many stories of how they can come out but never seen one. Yep read many magazines about what not to do, but still no proof. Sometimes we are victims of our own wives tales. I just redid a chain saw for competition turning 21000rpm and it had tru arc and I said what the **ll. He cut 3 weeks ago and carried it a little past the rpm with no problem. And to tell u the truth my fingers hate spiral "wocks" and I'm sure every one will tell you they are better but-----
reed