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Re: Air cooled ATF heat exchanger (cooling coil) YES good idea Posted by neil dale [Email]  (#2111)  [Profile/Gallery]
(more from neil dale) on Mon, 31 Jul 2017 09:51:49
In Reply to: Re: Air cooled ATF heat exchanger (cooling coil) YES good idea, Nick Taliaferro  [Profile/Gallery]
, Mon, 31 Jul 2017 05:04:10
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Thanks, Nick, Uh to be frank, none! I have no evidence, no empirical proof that an added" heat exchanger" is needed for a SAAB manual transmission. I Haven't even gotten around to measuring Saab trans temperatures. (What we do have is 40 years experience of living in the hot as hades, Arizona desert and seeing what HEAT does to motors, transmissions and everything else on vehicles ), We sometimes like totally needless technological complication and added frivolous complexity! At times we just like to do things because we can and like to! To be unnecessarily trick? (Well then, why should one allow their Saab to be seemingly less advanced than a BMW or a Corvette, et all) And, if we did it it would have a thermostat. and at the predetermined temperature for it to function, if it did open, kick in I'd be happy! YEA ! we did need this! Could one "overcool" a manual transmission? Maybe. What is the ideal temperature for a (manual ) transmission? Mayhaps there is an optimum temp for the lubricating fluid? We will research it. ! And the SAE technical papers are my best, confirmation, auto-correct, or an informative rebuke fr an engineer! As usual, you ask the relevant question! I know we spent years & thousands of $ trying to get a BMW transmission to keep from exploding itself in racing! (and succeeded!) It could explain my potential predilection for over-engineering! But so was the DC 3 -airplane! before computers, they HAD to! I read that even the new Corvette with all that vaunted GM engineering (and extra heat exchangers ! ) was overheating on a race track at 80 deg F and the computer backs down the power automatically to protect the motor! (now GM has a test track in Arizona so that makes no sense ! ) I wrote "Gee if there is a problem at 80 deg F in the south there surely, ineluctably WILL be in AZ at 100+ F"
That said, if anyone would need extra heat shedding capacity it would be someone living, driving, riding in the desert! So many people just don't experience the extremes we DO! And, even a small added cooler/(heat exchanger ) placed properly in the most efficient airflow will have a dramatic effect! EG we repurposed, plumbed in, placed a very small 4" X 10"? Lockhart OIL cooler(heat exchanger ) w/ a thermostat in the rear side cover( A low air pressure aerodynamic area) WATER cooling system of a Yamaha motorcycle and achieved an avg. 20-30 F degree temp reduction! (YES in AZ ) -That's as good as using the chemical water wetters! (Another good idea! -They REALLY work! (we have measured it w/ a digital thermometer ) Warning ! a shameless uncompensated plug :
http://www.designengineering.com/
SKU: 040200 $ 9.95
Radiator Relief™ " Supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature up to 30°F reducing engine wear that occurs during extreme use. " I expanded on the man's question seized it, hijacked his question shamelessly as an opportunity to pontificate and share ideas and solutions! regards Neil
->Posting last edited on Tue, 1 Aug 2017 11:46:48.
_______________________________________ viggen02
, Sat, 29 Jul 2017 19:35:08, Sun, 30 Jul 2017 00:44:17, Mon, 31 Jul 2017 05:04:10, Wed, 2 Aug 2017 18:20:14, Thu, 3 Aug 2017 12:47:59, Mon, 31 Jul 2017 09:51:49 <-- Viewing This Message
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