I don't know about your V-drives, but my old Borg Warner transmission, my new ZF 63 transmission and all of the others I've seen cool the transmission fluid with raw water BEFORE the raw water hits the heat exchanger. They did that for a reason, I expect. My best friend is a commercial fisherman with a Borg Warner 71C. He has a gauge on his transmission and keeps it around 175 degrees farenheit. Any hotter than that and he has durability issues. Of course, to him anything that doesn't last more than 5000 hours is a cheap piece of junk. He runs about 4000 hours per year and rebuilds his transmission every three years. As far as the manifolds go, I got a set of stainless steel manifolds out of Australia about five or six years ago. The company will make them raw water cooled or closed cooled, at your pleasure. They still look brand new when I inspect them. Expensive up front but a lot cheaper in the long run. They have the added advantage of being a tubular header design, which helps a bit performance wise, and they are a total of 125 pounds lighter than the cast iron manifolds that rusted out every three to five years.
John --- On Fri, 2/6/09, Oliver <[email protected]> wrote: From: Oliver <[email protected]> Subject: [UnifliteWorld] Cooling setup 31' Uni twin 318 V-drive To: "UnifliteWorld" <[email protected]> Date: Friday, February 6, 2009, 1:50 PM Hi there, was working on the engines on weekend and since I had them running for a while I had to drain (winterize) everything. I know all standard but was the first time for me on this boat so I had a good look at all the different spots where you have to drain the water, well, lets say they just did not think to hard about making it easy when they build the boat. Anyway since we all know that water runs downhill, at least in my books, I figured that I only need 1 drain to actually get the boat winterized. The V-Drive is included in the salt-water line. Since I want to take the opportunity to change the exhaust-manifolds into a full enclosed (three hose) setup, I was wondering if somebody know how much cooling and allowable running temperature the V-Drives need. Is it possible to just run the engine-coolant with some 90 celsius through them. Thank you for any respond. Oliver --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
