SimonR Posted June 9, 2007 Share Posted June 9, 2007 Does anyone have experience of the relative merits of the different trans cooler types? I've nicked three pics off Ebay to illustrate bar/plate, tube/fin and an aluminium 'block' design. I'm wondering about heat dissipation, ATF flow rates, airflow restriction etc. Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 9, 2007 Share Posted June 9, 2007 1st one is best. Link to comment Share on other sites More sharing options...
paul mac Posted June 9, 2007 Share Posted June 9, 2007 before you do anything you really need a transmission temp gauge you can not make any judgements about how well the cooler is working till you know whats going on, i started with one cooler and was still getting high temps and ended up with two Link to comment Share on other sites More sharing options...
Guest putputcar Posted June 13, 2007 Share Posted June 13, 2007 before you do anything you really need a transmission temp gauge you can not make any judgements about how well the cooler is working till you know whats going on, i started with one cooler and was still getting high temps and ended up with two Hi, I just bought a supra recently and trying to redo some of the setup now. i need some help if you don't mind. where do you mount your tranny cooler? do you have a fan ? And also, where do you tap your thermocouple (temperature probe) into? what temperature is consider normal and too hot? I live in Houston,Texas and right now it's 88-92F outside and about 60-70% humidity. I was driving in traffic (stop and go , no more than 50mph) for 40-50 min 3 days in a row. Then the transmission was having problem shift into higher gear. The first 40min was absolutely normal. I have a 94 Single with 3800 stall and tranny cooler between the radiator and greddy 3row FMIC. Thanks a bunch in advance. SOrry for rushing out all these questions. Link to comment Share on other sites More sharing options...
Sheefa Posted June 13, 2007 Share Posted June 13, 2007 I have my Tranny Cooler (thick 9-core) mounted to the back of my FMIC thanks to Mr Wilsons handywork Seems to work perfectly in all weather, gearbox still shifts fine and I haven't had any problems so far. I don't have a fan either or a temp sensor. If you're having heat related issues, look into getting another tranny cooler or/and the dual fans that MVP Motorsports provide that slot nicely behind the rad Note, I'll probably be shot down on the above though! Greg Link to comment Share on other sites More sharing options...
ajazyasin Posted June 13, 2007 Share Posted June 13, 2007 the second one is superb. Its actually a truck trans cooler. If it can disipate the heat from a truck trans, im sure it will deal with the supra trans. ps. i have been using one on my soarer. Link to comment Share on other sites More sharing options...
SUPRASUZUKI Posted June 13, 2007 Share Posted June 13, 2007 before you do anything you really need a transmission temp gauge you can not make any judgements about how well the cooler is working till you know whats going on, i started with one cooler and was still getting high temps and ended up with two I'd agree with this. Measure first, otherwise you've no idea if a)you need a cooler and b)if you fit one how much better off you are. Data first, change second. Link to comment Share on other sites More sharing options...
paul mac Posted June 13, 2007 Share Posted June 13, 2007 I'd agree with this. Measure first, otherwise you've no idea if a)you need a cooler and b)if you fit one how much better off you are. Data first, change second. very wise words mate, how would you know you dont need a fan if you dont know the temp ?, i started with one cooler and ended up with 2, with regard to pupputcar see the pic for the sensor pocket mounted in the flow from the box to the cooler, this is just a black iron fitting available from plumbers merchants, other pic is 1st cooler in bomex, i mounted the second at an angle in the airstream under the indicator (this cooler has the fan mounted to it) i can not stress enough the coolers HAVE to be ducted (thin 1mm sheet ally is ideal) with no air gaps round them or they will only be maybe 50% effecient (the air will take the easiest route and flow round). Oil temp i have a stat for the fan that cuts in at 80 degrees C and cuts out at 65 C this is a must in traffic where the temps can rocket Link to comment Share on other sites More sharing options...
SimonR Posted June 13, 2007 Author Share Posted June 13, 2007 What temp differences did you see between ducted and non-ducted coolers? Link to comment Share on other sites More sharing options...
paul mac Posted June 13, 2007 Share Posted June 13, 2007 What temp differences did you see between ducted and non-ducted coolers? the first cooler i had (at an angle in the air flow) just about kept up on cool days but when it started to warm simply did not cope with temps going past 120-130 C once you slowed down from a "spirited" run, ducting helped bring it down but not enough so second cooler and fan went on and all is now cool:cool: in the land of tranny;) Link to comment Share on other sites More sharing options...
SimonR Posted June 13, 2007 Author Share Posted June 13, 2007 Ta. That's just the kind of info that I need. Practical experience rather than speculation. Excellent. Link to comment Share on other sites More sharing options...
paul mac Posted June 13, 2007 Share Posted June 13, 2007 Ta. That's just the kind of info that I need. Practical experience rather than speculation. Excellent. no problem Simon, glad to be of help Link to comment Share on other sites More sharing options...
Guest putputcar Posted June 14, 2007 Share Posted June 14, 2007 thanks a lot for all the info. I have tried the search but due to the terminology , I couldn't do my "search" sufficiently Yet. I'm about to pull the hose on the tranny cooler , and I was wondering how do you refill the " little bit" of tranny fluid that spilled? Through the dip stick? or there is a fill plug somewhere. thanks Link to comment Share on other sites More sharing options...
Gamer Posted June 14, 2007 Share Posted June 14, 2007 Through the dipstick. Link to comment Share on other sites More sharing options...
SimonR Posted June 16, 2007 Author Share Posted June 16, 2007 Expanding on my original question slightly, I’m having trouble finding out the flow rate for ATF on the A340 trans. I can calculate this for coolant or engine oil because I know the GPH of the pumps and the capacity of the systems, but while I know the capacity of the trans I don’t know how long it takes to complete one ‘circulation’ (yes, I know that’s an over-simplification) of the system. Does anyone know (not guess) what the flow rate for these transmissions is? Just to keep things on-topic, I already have a temp gauge and an auxiliary Hayden cooler so I’m not asking a generic question about trans cooling, I need specific info about the flow rate. Thanks. Link to comment Share on other sites More sharing options...
paul mac Posted June 16, 2007 Share Posted June 16, 2007 Expanding on my original question slightly, I’m having trouble finding out the flow rate for ATF on the A340 trans. I can calculate this for coolant or engine oil because I know the GPH of the pumps and the capacity of the systems, but while I know the capacity of the trans I don’t know how long it takes to complete one ‘circulation’ (yes, I know that’s an over-simplification) of the system. Does anyone know (not guess) what the flow rate for these transmissions is? Just to keep things on-topic, I already have a temp gauge and an auxiliary Hayden cooler so I’m not asking a generic question about trans cooling, I need specific info about the flow rate. Thanks. i think a definate problem you have there mate (if you could find any technical detail) is at what speed, as with the engine oil system its going to be rev related, good luck with the search Link to comment Share on other sites More sharing options...
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