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<x-flowed>That would be really interesting. Actually, one of the projects I was thinking of for parma would be to record a large number of type3 engines and then do an analysis of the frequency spectrum of each engine. I have computer code which does this (they are easily available on the web) This could be a useful diagnostic if the recording could be standardized. For example worn bearings may produce a band at frequency X, lifters at frequency Y, loose rod at Z, and so on. Of course this may be a pipe dream, maybe you would just get a big ugly broad band...but it would be worth a try. There is somewhere on the web a recording of different engine sounds (I think made by John Muir!)but I couldnt get much out of it by listening. Only problem is I don't know much about recording equipment. Ideally the microphone would be cheap enough for everyone to buy the same one. Another idea would be to have a circulating microphone which everyone could borrow (a possibility on this high-integrity relatively small type III list!). Then the person could record their engine and could compare the spectrum to the database (provided on this site of course!). Any audiophiles out there who know how to record sounds cheaply? Jim Rustad 71 FI Square Kennewick WA _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com ------------------------------------------------------------------- Too much? Digest! mailto:type3-d-request@vwtype3.org Subj=subscribe </x-flowed>