PhilMorrison Posted June 13, 2008 Share Posted June 13, 2008 I was having a little panick about the loud rattling from the gearbox on idle, and found the info here saying it's quite common when using lightened flywheels (I use a carbonetics triple plate carbon clutch/flywheel ) so thanks for that info. I don't care about loud noises as long as they arn't going to become terminal because of them .. +1 for searching people Anyway, because the noise seems to get really bad when the cars run for a while, I wondered if the box ever came with a cooler option? Or if anyone's experimented with running an aftermarket cooler? I have plenty of coolers, and I have a UK Supra diff oil pump floating around so it wouldn't be to hard to knock something up.. Quote Link to comment Share on other sites More sharing options...
Homer Posted June 13, 2008 Share Posted June 13, 2008 I don't recall anyone ever using an oil cooler on a V160 here, plus it's normal for them to get pretty darn loud once they've had some heat put into them (on aftermarket clutch and flywheel obviously). The yanks don't seem to bother with them even when using for 1000+bhp drag cars, however your one has rather more sustained abuse so it might be new territory. Hopefully one of the more technically minded people can advise Quote Link to comment Share on other sites More sharing options...
PhilMorrison Posted June 13, 2008 Author Share Posted June 13, 2008 Cheers . I did wonder if this level of sustained gearbox abuse was relatively new ground. I figured someone here must track their Supra properly though? Quote Link to comment Share on other sites More sharing options...
Homer Posted June 13, 2008 Share Posted June 13, 2008 Very, very few use these cars on the track to a similar degree. Chris wilson would probably be the best person to speak to Also b.weeks and SteveL are running their cars in this years time attack series so might be worth getting them or their sponsor, Paul Whiffin's input. Quote Link to comment Share on other sites More sharing options...
PhilMorrison Posted June 13, 2008 Author Share Posted June 13, 2008 I guess a good start would be to see if I actually need one. It'd be very easy to throw an oil temp sensor in there.. I'd just need to know what a safe working temp limit is with the V160 oil. Quote Link to comment Share on other sites More sharing options...
ManwithSupra Posted April 11, 2014 Share Posted April 11, 2014 A thread resurrection back from 2008 here... I was thinking as my car has a heat aided diffuser, there isn't going to be a huge amount of cool air running past the cooling fins on the underside of the V160. I have noticed after say 40 mins of pounding around the track my transmission tunnel gets VERY hot due to the underside being sealed from the cooler outside air. Does anyone know what the max temp these gearboxes can work at?? I am thinking of getting a Cooler installed and controlled by the Syvecs just to be on the safe side but it would be good to know. Currently I have no issues with the gearbox but I don't want to be shortening its life if I am operating it outside the temp window.. For those that don't know I don't run a standard chassis... here is a picture of the trans tunnel https://scontent-b-lhr.xx.fbcdn.net/hphotos-prn1/t31.0-8/902867_454567894617859_86649920_o.jpg Here is a picture from the underside of the car when the flat floor was being made https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-frc3/t1.0-9/530992_386588114749171_1025754743_n.jpg Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 11, 2014 Share Posted April 11, 2014 If you are using the stock ATF based Toyota oil I would say running much over 250F will result in shortened oil life and oxidation. personally I would run a more viscous oil like Motul Gear 300. The reason manufacturers run a low viscosity gear oil is to maximise MPG. Your usage is quite different, no doubt you are not after maximizing MPG, and are willing to allow a bit of time for the gearbox oil to warm up before expecting the slickest, fastest synchromesh action. Feeding all that engine bay heat down the tunnel in a sealed environment will raise transmission temps. You can either use a gauge and sensor to directly monitor the gear temp, log it via the ECU, or just use temp crayon or stickers and read the case temp visually and allow "a margin" for how much hotter the actual oil is. It's not an endurance racer, so I would guess that if it needs a cooler at all, a small one would suffice. I don't run a gearbox cooler on my Skyline, but using straight cut gears and dog engagement it doesn't generate the same gear oil temps as a helical cut box with cone synchros. Quote Link to comment Share on other sites More sharing options...
ManwithSupra Posted April 11, 2014 Share Posted April 11, 2014 If you are using the stock ATF based Toyota oil I would say running much over 250F will result in shortened oil life and oxidation. personally I would run a more viscous oil like Motul Gear 300. The reason manufacturers run a low viscosity gear oil is to maximise MPG. Your usage is quite different, no doubt you are not after maximizing MPG, and are willing to allow a bit of time for the gearbox oil to warm up before expecting the slickest, fastest synchromesh action. Feeding all that engine bay heat down the tunnel in a sealed environment will raise transmission temps. You can either use a gauge and sensor to directly monitor the gear temp, log it via the ECU, or just use temp crayon or stickers and read the case temp visually and allow "a margin" for how much hotter the actual oil is. It's not an endurance racer, so I would guess that if it needs a cooler at all, a small one would suffice. I don't run a gearbox cooler on my Skyline, but using straight cut gears and dog engagement it doesn't generate the same gear oil temps as a helical cut box with cone synchros. Ah Cheers, Chris Yeah for the meantime I think I will pop on a temp strip on the underside near the drain hole and see how hot the case is getting, of course it wont be that accurate but at least I can see what is going on down there. Ideally I want to get a temp sensor so I can monitor it constantly on my steering wheel display or on the Dash2. I am pretty sure my dash reads the CAN signal from the Syvecs so will need to wire the sensor into the ECU. I was thinking of mounting the sensor in the Drain plug, like this... With regards the oil type used, I thought it was generally recommended against using anything other than the ATF oil for the V160 boxes. You are right MPG isn't a concern to me and I always do a couple of laps for warm up (1 lap if its a dry warm day) so wont need quick changes right away. The trans oil needs changing now anyway so I will replace with the Motul Gear 300 if you happily recommend it for use with the V160. Quote Link to comment Share on other sites More sharing options...
Guest crystal Posted April 11, 2014 Share Posted April 11, 2014 nice share.....good thread http://dailydigitaldeals.info/wp-content/uploads/2012/01/11/20/buy.gif Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 11, 2014 Share Posted April 11, 2014 Whoa, I am not recommending it, just saying if it were my Supra I would use something like Motul 300 or similar. You make your own mind up I would also run it in a road going Supra, too, if I had onbe, as I consider it gives better lubrication, albeit with a tad more drag. But that is not saying YOU should use it One has to be careful of recommending none stock oils, I don't want grief if the gearbox seizes or the synchros wear out, blah blah Quote Link to comment Share on other sites More sharing options...
ManwithSupra Posted April 11, 2014 Share Posted April 11, 2014 Whoa, I am not recommending it, just saying if it were my Supra I would use something like Motul 300 or similar. You make your own mind up I would also run it in a road going Supra, too, if I had onbe, as I consider it gives better lubrication, albeit with a tad more drag. But that is not saying YOU should use it One has to be careful of recommending none stock oils, I don't want grief if the gearbox seizes or the synchros wear out, blah blah Haha thats fair enough mate For now getting some temp readings is key, I may run the stock stuff again for one outing and see what the temps are like as I have some in my workshop ready to go. I may be blowing the whole thing out of proportion and it may be fine but I would rather know whats going on with it then leave it. Quote Link to comment Share on other sites More sharing options...
bignum Posted April 11, 2014 Share Posted April 11, 2014 I think you`re worrying about nothing, just change the oil more often, most of the heat in your tunnel will probably be from the exhaust? Quote Link to comment Share on other sites More sharing options...
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