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Date: Sun, 23 May 2004 00:52:51 -0300
From: Dexter J <lamealameadingdongnospamlamelame.org>
Subject: Re: replaced DCI cassette


Salutations: >> I wonder if there is any way to get a little breeze in there with a mini >> fan? I guess the problem would be making sure it remains water tight and >> condensation doesn't form on foggy nights. > > Perhaps a heat sink unit on top of the aluminum cover ? I don't know > if the engine compartment itself is cool enough to make it worthwhile > though. Perhaps lots of "fins" installed on the surface would do it. Actually I have access to surplus issue heat sinks - as big as 20x20x2 inches.. However, I'm pretty sure the problem would be lower in DI unit cabin. The paint doesn't seem to peel - so can't be all that hot on the top of the DI. I think the problem is that the heat being generated at the top of the head is simply radiating into the DI and, in addition to the heat being generated by the coils, is raising the DI temp above it's engineered limit. The good folks at Kawasaki racing cleared some extra breeze channels into the head on my old Z1R to cool things down for sort of the same reasons. Ballast resisters sit just above the head on the frame and the main timing chain runs between #2 and #3 - given the tall cam decks it can get really hot in there. Anyway, individually the DI operates at X and the head domes operate and Y - but as things start to get hot and old - I wonder if the "special" DI alloy starts to act as a heat sink for the rest of Head? I think I'll poke around after the Feds clear our new (to us) Aero into Canada. Anyone got a dead Red DI unit from a 2.3 9000 block they'd be willing to donate to milling research? -- J Dexter - webmaster - http://www.dexterdyne.org/ all tunes - no cookies no subscription no weather no ads no news no phone in - RealAudio 8+ Required - all the Time Radio Free Dexterdyne Top Tune o'be-do-da-day Louis Prima - Buona Sera http://www.dexterdyne.org/888/161.RAM

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