Scott Posted July 7, 2011 Share Posted July 7, 2011 As above really. I've not looked into the price of a stock one so I don't know if the TRD one will be way over the odds or not (£80). According to the writeup the TRD maintains a valve temperature of 71 degrees allowing better flow? Thanks Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 Having a little dig around the forum it would appear that the 71 degrees thing is actually where the thermostat opens therefor running the engine a little cooler. Noticed a few comments from CW that this would be detremental to the efficiency of the engine fuelwise. Anyone noticed any difference running them? If it will genuinely help my car then I want to get it (even if I lose a little fuel econemy), I don't want to get it if it's just a TRD gimmick or race only kind of thing. Cheers guys. Quote Link to comment Share on other sites More sharing options...
Geo Posted July 7, 2011 Share Posted July 7, 2011 Lee put one in my build dude, they open up earlier than stock, so worth it IMO. Quote Link to comment Share on other sites More sharing options...
scoooby slayer Posted July 7, 2011 Share Posted July 7, 2011 (edited) mine is stock and car looks to have stock rad aswell but hard use at 2 bar 900 bhp and temps hold 91c and she cruises at 90c so ime it isnt needed, if the temps are going to high my opinion is an early stat will just try and mask a bigger problem in the actaul cooling efficiency of the cooling system. the main situation a 71c stat would be needed is on a track car imo that sits at sustained high rpms for long periods then temps will prob rise abit, it will effect fuel economy though. Edited July 7, 2011 by scoooby slayer (see edit history) Quote Link to comment Share on other sites More sharing options...
Geo Posted July 7, 2011 Share Posted July 7, 2011 Having a little dig around the forum it would appear that the 71 degrees thing is actually where the thermostat opens therefor running the engine a little cooler. Noticed a few comments from CW that this would be detremental to the efficiency of the engine fuelwise. Anyone noticed any difference running them? If it will genuinely help my car then I want to get it (even if I lose a little fuel econemy), I don't want to get it if it's just a TRD gimmick or race only kind of thing. Cheers guys. your going single FFS fuel econemy goes right out the window here, Quote Link to comment Share on other sites More sharing options...
Geo Posted July 7, 2011 Share Posted July 7, 2011 mine is stock and car looks to have stock rad aswell but hard use at 2 bar 900 bhp and temps hold 91c and she cruises at 90c so ime it isnt needed, if the temps are going to high my opinion is an early stat will just try and mask a bigger problem in the actaul cooling efficiency of the cooling system. what about sat in traffic?? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 7, 2011 Share Posted July 7, 2011 http://www.supraforums.com/forum/archive/index.php/t-474193.html From titan This thermostat opens your radiator at 160 degrees instead of the 180 degrees your stock thermostat opens your radiator. Although we recommend this upgrade to everyone, it is especially important if you live in a hot area, have a built motor, auto-cross, or road-race. If you’re looking for a thermostat to help your Toyota’s cooling system reach its full potential, then look no further. The TRD Japan high performance thermostat will deliver! Most stock Toyota thermostats open between 180-190 degrees Fahrenheit to cool your engine, which is fine for normal driving conditions. But if you use your Toyota for performance driving or just want peace of mind protection from intense heat, the TRD Japan high performance thermostat opens at 160 degrees F to quickly cool your hard working engine. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 mine is stock and car looks to have stock rad aswell but hard use at 2 bar 900 bhp and temps hold 91c and she cruises at 90c so ime it isnt needed, if the temps are going to high my opinion is an early stat will just try and mask a bigger problem in the actaul cooling efficiency of the cooling system. the main situation a 71c stat would be needed is on a track car imo that sits at sustained high rpms for long periods then temps will prob rise abit, it will effect fuel economy though. Yeah that's what I was thinking to be honest. I wasn't sure if there would be an upside to having the engine run cooler though? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 what about sat in traffic?? If you are sat in traffic I doubt the thermostat would make a difference as both would be fully open regardless. Quote Link to comment Share on other sites More sharing options...
scoooby slayer Posted July 7, 2011 Share Posted July 7, 2011 what about sat in traffic?? highest i have seen is 92c on hks navigator, cruises at 90c caining it 91c perfect temp imo, these engine are designed to run at 90c some modern engines run even hotter. Quote Link to comment Share on other sites More sharing options...
scoooby slayer Posted July 7, 2011 Share Posted July 7, 2011 Yeah that's what I was thinking to be honest. I wasn't sure if there would be an upside to having the engine run cooler though? i cant really see one if the cooling system can maintain 3d above stat temp then it will maintain 91c on an 88 stat, whereas a 71c stat will sit at a constant 74c, prob 70c in winter and use more fuel for no gain imo. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 7, 2011 Share Posted July 7, 2011 highest i have seen is 92c on hks navigator, cruises at 90c caining it 91c perfect temp imo, these engine are designed to run at 90c some modern engines run even hotter. I am nearly sure mine sits at roughly 80 ; but I have an aftermarket rad! Just once they dont overheat I think its all good. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 i cant really see one if the cooling system can maintain 3d above stat temp then it will maintain 91c on an 88 stat, whereas a 71c stat will sit at a constant 74c, prob 70c in winter and use more fuel for no gain imo. The stock stat is 82 degrees though? Would that not mean yours is running a little high? Quote Link to comment Share on other sites More sharing options...
Marty Posted July 7, 2011 Share Posted July 7, 2011 Mine lasted 4k miles and then decided to stick shut. Have put a standard one back in, won't be buying another. Quote Link to comment Share on other sites More sharing options...
scoooby slayer Posted July 7, 2011 Share Posted July 7, 2011 The stock stat is 82 degrees though? Would that not mean yours is running a little high? even better then if thats the case it will maintain 85c, i assume mine has an 88c in it as it maintains 91 c and only goes up or down 1d from that so the cooling system is doing its job perfectly, if i was on a 82c stat and it went up 10c to 92c under hard use it wouldnt sustain 92c as the cooling system wouldnt be doin its job so the temps would keep rising. Quote Link to comment Share on other sites More sharing options...
scoooby slayer Posted July 7, 2011 Share Posted July 7, 2011 Mine lasted 4k miles and then decided to stick shut. Have put a standard one back in, won't be buying another. at £80 for a stat that is utterly not acceptable, would they not replace it ? Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 Mine lasted 4k miles and then decided to stick shut. Have put a standard one back in, won't be buying another. That settles it for me Quote Link to comment Share on other sites More sharing options...
Awisto Posted July 7, 2011 Share Posted July 7, 2011 OEM stat is around £15 IIRC, Blueprint one £8, for comparison to the TRD Quote Link to comment Share on other sites More sharing options...
Marty Posted July 7, 2011 Share Posted July 7, 2011 at £80 for a stat that is utterly not acceptable, would they not replace it ? Tell me about it, i didn't even try and chase another off them, it was over 2years old at the time so i think i would have been fighting a losing battle. I don't notice any difference with the standard one in to be honest so i've no interest in buying another. I guess an uprated thermostat has its uses, in a very hot climate or when the car is tracked a lot, but in the uk, when the car sees much more normal driving than WOT there is nothing wrong with standard. Quote Link to comment Share on other sites More sharing options...
Marty Posted July 7, 2011 Share Posted July 7, 2011 That settles it for me Don't let me put you off buddy i don't think it's a common occurrence. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted July 7, 2011 Share Posted July 7, 2011 Don't let me put you off buddy i don't think it's a common occurrence. If the price is 15 gbp to 80 gbp; screw that! OEM stat Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 7, 2011 Share Posted July 7, 2011 Too cold, and would need mapping to suit, most maps are barely out of the warm up calibrations at 70 degrees. Plus it will use more fuel. I'd stay with a stock genuine Toyota stat. I run a modded stock Nissan stat on my RB26, tweaked to 80 degrees C. Works fine and in conjunction with a locked up (removed, actually) viscous keeps everything cool after 20 lap full bore track sessions on a warm day. Quote Link to comment Share on other sites More sharing options...
Scott Posted July 7, 2011 Author Share Posted July 7, 2011 Thanks folks, I don't suppose anyone has the part number handy do they? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 7, 2011 Share Posted July 7, 2011 90916-03093 Quote Link to comment Share on other sites More sharing options...
Noz Posted July 7, 2011 Share Posted July 7, 2011 I bet Mr Wilson knew it off the top of his head, that clever guy he is Quote Link to comment Share on other sites More sharing options...
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