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<x-charset iso-8859-1>On Tuesday 16 October 2001 22:09, Jim Adney wrote: > On 16 Oct 2001, at 11:38, shackedup wrote: > > OK the car is a 63 single carb with early (.008" valve setting) heads > > and god knows what for a case. I do have enough oil in the car so I > > removed the oil pressure relief valve to clean it up. I have read > > that the unladen length of the spring in there should be between 62 > > and 64 mm but when I measured it it was 73mm!! The piston I removed > > was the old pre-s type. I cleaned up the spring, piston, nut and the > > hole they came from and reassembled using a 62mm spring from my other > > single carb engine. > > > The parts list shows that the same spring was used up thru 69. > The Bentley says that spring should require 5-9 lbs to compress it > to 43mm length. It's hard to actually do this, but it's really the only > way to be sure. I didn't find a free length listed. > > Over the years there have been a lot of "HD" springs marketed out > there which pretended to fix problems, both real and perceived. I > have not seen them do anything, but I have some. It really IS hard > to pick out the right springs. > If anyone needs to find out what their spring/springs are, I can check them at work. We have the lab test equipment spring testers. We have to check a sample of all the springs we recieve from our vendors, and have a digital tester. (We also have to sort mixed springs once in a while when someone screws up.) We use thousands of springs a day in our production of fuel pressure regulators, with about 10 different pressures on the raw spring, and they all look the same to the naked eye. -- Russ Wolfe '71 Fastback AT '66 Fastback MT (IT RUNS) russw@classicvw.org http://www.classicvw.org ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org </x-charset>