Big Mark Posted October 18, 2016 Share Posted October 18, 2016 Going single so decided to upgrade my already upgraded trans cooler. Looking at fitting a pair of 30 row coolers exactly where the SMIC was using the SMIC ducting for maximum efficiency. Engine will be capable of over 600bhp so gearbox will need all the help it can get. Anyone see any reasons not to use 2 of these? Quote Link to comment Share on other sites More sharing options...
Burna Posted October 18, 2016 Share Posted October 18, 2016 Attached is a diagram of the stock UK one. I don't know what size it is or how dense it is compared to the one you've found mate. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted October 18, 2016 Author Share Posted October 18, 2016 I reckon the stock ones aren't that big on the UK cars. The ones we fit here at work are only probably 5" x 2.5" x 2.5". Tho I will speak to the transmission cooling gurus at work about the pros and cons Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 18, 2016 Share Posted October 18, 2016 I have some photos somewhere of my UK cooler Would you really need 2 of the type you've posted, especially if they're properly ducted and getting a good airflow through them Quote Link to comment Share on other sites More sharing options...
Burna Posted October 18, 2016 Share Posted October 18, 2016 Tho I will speak to the transmission cooling gurus at work about the pros and cons I think that would be your best bet, post up what you find out please mate. - - - Updated - - - I have some photos somewhere of my UK cooler Would you really need 2 of the type you've posted, especially if they're properly ducted and getting a good airflow through them I've never had a good look at mine, is it all properly ducted? Quote Link to comment Share on other sites More sharing options...
Big Mark Posted October 18, 2016 Author Share Posted October 18, 2016 I have some photos somewhere of my UK cooler Would you really need 2 of the type you've posted, especially if they're properly ducted and getting a good airflow through them Better safe than sorry. Heat and Torque kills an autobox. Torque can be controlled to a certain extent so just leave heat to sort out. And as I will drive the car hard I want to give the autobox at least a chance of lasting. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 18, 2016 Share Posted October 18, 2016 Found them Quote Link to comment Share on other sites More sharing options...
Frank Bullitt Posted October 18, 2016 Share Posted October 18, 2016 Is it possible to cool a box too much? i.e you stop it from reaching the optimum operating temperature. Quote Link to comment Share on other sites More sharing options...
mattdavies Posted October 18, 2016 Share Posted October 18, 2016 I Have a feeling two would not get the gearbox oil up to a reasonable working temperature, Maybe look in to monitoring them and go from there. I have fitted two 13row cooler just behind the drivers duct, Chris Wilson advised this will be enough and that i may need to blank one in the winter. I am planning to install an oil temp gauge into the outline from the transmission to keep and eye on the temperature. I believe somewhere between 50-85degrees in a good working range Quote Link to comment Share on other sites More sharing options...
Burna Posted October 18, 2016 Share Posted October 18, 2016 Found them Thanks Dnk, it's bigger than I imagined it to be! Quite dense too. Quote Link to comment Share on other sites More sharing options...
Burna Posted October 18, 2016 Share Posted October 18, 2016 (edited) Is it possible to cool a box too much? i.e you stop it from reaching the optimum operating temperature. I Have a feeling two would not get the gearbox oil up to a reasonable working temperature, Maybe look in to monitoring them and go from there. I have fitted two 13row cooler just behind the drivers duct, Chris Wilson advised this will be enough and that i may need to blank one in the winter. I am planning to install an oil temp gauge into the outline from the transmission to keep and eye on the temperature. I believe somewhere between 50-85degrees in a good working range These were my exact thoughts that I discussed with Big Mark on whatsapp yesterday. I was led to believe that the transmission fluid works within an ideal temperature range, hence why it runs through a heat exchanger in the stock rad to bring the transmission fluid up to temperature, as when cold the gear changes are harsher. A lot of people neglect the relevance of the heat exchanger in the stock rad, and just dump this part of the system when fitting aftermarket radiators as part of a so called 'upgrade', and not really understanding the after effects. Edited October 18, 2016 by Burna (see edit history) Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 18, 2016 Share Posted October 18, 2016 I was recently looking at this regarding my classic Range Rover and found this page at Ashcroft Transmissions, i've no idea how relevant the figures would be to the Supra autobox but might be a bit of a guide http://www.digi-panel.com/trannyoil.htm Quote Link to comment Share on other sites More sharing options...
David P Posted October 18, 2016 Share Posted October 18, 2016 Is it possible to cool a box too much? i.e you stop it from reaching the optimum operating temperature. With 2 big coolers you'll need a thermostat, I used a Mocal. Quote Link to comment Share on other sites More sharing options...
mattdavies Posted October 18, 2016 Share Posted October 18, 2016 I was recently looking at this regarding my classic Range Rover and found this page at Ashcroft Transmissions, i've no idea how relevant the figures would be to the Supra autobox but might be a bit of a guide http://www.digi-panel.com/trannyoil.htm So according to this if measuring in the oil pan then you are looking at 80 - 95C. if the temperature exceeds 130C then you are likely to damage components. Quote Link to comment Share on other sites More sharing options...
Big Mark Posted October 18, 2016 Author Share Posted October 18, 2016 (edited) So something like this...... http://www.ebay.co.uk/itm/MOCAL-OT-1-1-2-OIL-COOLER-THERMOSTAT-SAXO-106-205-306-GOLF-GTI-CALIBRA-TURBO-SQ/401062173484?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D8a065e76d1d343b2b54621e1f09a9567%26pid%3D100338%26rk%3D3%26rkt%3D16%26sd%3D152180815648 and this.. http://www.burtonpower.com/mocal-in-line-oil-thermostat-1-2-push-on-mocot1.html?utm_source=google&utm_medium=prodlistad&utm_campaign=gb_feed?WbRf=ProdListAd&gclid=CM3Fh4OE5c8CFQzhGwodIWsIvA Edited October 18, 2016 by Big Mark (see edit history) Quote Link to comment Share on other sites More sharing options...
Big Mark Posted October 18, 2016 Author Share Posted October 18, 2016 I think I might drop a sensor in the system somewhere to let the Syvecs keep an eye on things Quote Link to comment Share on other sites More sharing options...
Chris Bailey Posted October 18, 2016 Share Posted October 18, 2016 We have 2 large coolers mounted to the A/C rad. Seems to be doing the job well Quote Link to comment Share on other sites More sharing options...
mattdavies Posted October 18, 2016 Share Posted October 18, 2016 We have 2 large coolers mounted to the A/C rad. Seems to be doing the job well I was tempted by this, but was deterred as there are a lot of cooling devices in the air passage as it is, and I effectively have two free air passages to take advantage of. I know a lot of people run their coolers this way just my un-educated thinkings Quote Link to comment Share on other sites More sharing options...
Mk4Gaz Posted October 18, 2016 Share Posted October 18, 2016 I've got one of these, currently mounted directly behind the passenger side vent of my do luck bumper. I'm going to be fitting a take off for a temp gauge sender soon, to monitor the fluid temperature. I'm also still running the 'stock' setup, at the bottom of the coolant radiator Look at this on eBay http://www.ebay.co.uk/itm/301359120994 Quote Link to comment Share on other sites More sharing options...
Shane Posted October 19, 2016 Share Posted October 19, 2016 I have two fitted: http://www.ebay.co.uk/itm/MITSUBISHI-SHOGUN-PAJERO-MK3-3-2-Did-AUTO-GEARBOX-OIL-COOLER-/201670120460?hash=item2ef479d40c:g:o5UAAOSwPCVX2-uh http://www.ebay.co.uk/itm/Davies-Craig-Ultra-Cool-Transmission-Cooler-401-/261986458380?hash=item3cff9c1b0c:g:97kAAOSwPcVVurRs But I don't have a temperature gauge or a thermostat yet so have no idea if its running too cool. I fitted them for the strip to save the box for that really. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 19, 2016 Share Posted October 19, 2016 If it were me i'd fit a temp gauge and cooler with a thermost rated for the temp required to keep the box around 80-90 c http://myautomatictransmission.com/temperature-chart.htm Quote Link to comment Share on other sites More sharing options...
David P Posted October 19, 2016 Share Posted October 19, 2016 I run two oil coolers, one of them open circuit and the other via a Mocal thermostat and have a fluid temp gauge, the actuators are shimmed and I add Lucas SS to the fluid. These tweaks I regard essential for any transmission running more than stock power. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 19, 2016 Share Posted October 19, 2016 I run two oil coolers, one of them open circuit and the other via a Mocal thermostat and have a fluid temp gauge, the actuators are shimmed and I add Lucas SS to the fluid. These tweaks I regard essential for any transmission running more than stock power. What temp are you keeping the atf too ? Quote Link to comment Share on other sites More sharing options...
Shane Posted October 19, 2016 Share Posted October 19, 2016 We have 2 large coolers mounted to the A/C rad. Seems to be doing the job well With a thermostat bypass valve or simply in line with no control? Quote Link to comment Share on other sites More sharing options...
David P Posted October 19, 2016 Share Posted October 19, 2016 The stat holds it steady at 80-85C, have never seen more than 90. Quote Link to comment Share on other sites More sharing options...
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