I was wanting to start a discussion on the benefits of cooling the manual transmission, I've been doing a lot of researching on this, and apparently it's pretty common on high performance cars, with the fifth gear issues, this may be a solution to two problems at one time, if someone is driving one of these cars to the grocery store, it's probably not needed, but many people here like to drive these cars hard, in that case the transmission is generating a fair amount of heat, put them on the track or at an autocross, and they really heat up, the solution is to circulate the oil through a filter and cooler and back to the transmission, the easiest way I can see to do this, is to drill and tap the center of the drain plug, for an AN adapter or a pipe thread adapter, and remove the fifth gear cover, and braze a fitting directly to it, this would allow oil to flow to an inline filter by gravity and into an electric pump, then be pumped through a cooler, and into the fifth gear cover, where it would flow back into the case, cooling the fifth gear in the process . I've been looking at pumps, and the main issue is the price, one solution I've seen mentioned numerous times, is to use a Holley red fuel pump, the pumps are supposed to be all metal inside, and only pull two amps, they run about 7 psi, lightweight small oil coolers are easy to find, and could be mounted in airflow, and the all metal inline filters are small and light weight, one thing that was a concern was using the pumps with heated oil, but I don't think the tranny oil will be hot enough to make a difference, the argument was using them to circulate engine oil to a turbo, that's much hotter then the transmission oil will ever get
here's a really interesting article dealing with inline pumps and some they offer, but at a very high price http://www.rbracing-rsr.com/oilsystems.htm
Bookmarks