I'm not familiar the the act clutch (i have a spec clutch) .... however, i have loads of experience with lightweight racing clutches behind small-block chevys (stock car racing) .... one thing that i always had to keep an eye on was "coning" this is where the pressure plate and flywheel would both become conical over time. The evidence could often be found on the disc (the surface becomes tapered) and the extent could be measured by putting a straightedge across the entire face (across the center) of either the PP or flywheel (this may be that which they are suggesting you check). If this "coning" does not exist (is less than .010"?) then you should be fine. The pressure plate can be resurfaced to remove the "coning" a finite number of times (once maybe twice depending on how bad it is and how severe the future usage will be).
Chris Messmer Roos Instruments, Inc. 2285 Martin Ave Santa Clara, CA 95050 From: Ashraf Farrag <[email protected]> To: [email protected] Date: 04/28/2010 08:21 AM Subject: Re: Clutch disc recommendation Sent by: [email protected] It sucks to have plenty of time to do car work (plenty of things I can fabricate from scrap with a TIG and plasma cutter) but essentially no budget for stuff you can't really fab. :( Some follow-up questions: * Has anyone put another disc on a used pressure plate and what experience have you had? * Has anyone worked with a clutch rebuilder to refurb a pressure plate? ACT tech support via chat didn't see any problem with it but mentioned putting a straightedge to the pressure plate to make sure it was in spec. The machine shop that is resurfacing the flywheel begs to differ with my scheme to save money by just replacing the disc. We did not put a straightedge to it but one can visualize slight wear on the pressure plate from the disc that was on there. The main machinist looked at it and said it would not be a good idea but we didn't go into details. I ran into the other fellow I work with on the way out and said he had seen someone attempt similar and that the new disc would "self-clearance" after slipping for a bit until the edges of the disc wear to the wear on the pressure plate. Not ideal. I could continue to run the old disc (which has like ~80% of it's life) until the disc is worn but it is no fun trying to drive with that clutch on the street. I guess this is why discs and pressure plates are sold as a set (unless one can get the pressure plate surface machined (or a new one) and then I guess you would need to machine the flywheel step to match)... --Ashraf _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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