Opinions on lower temp thermostats VS OEM

[silviasgp06]

Ive seen some of the debates on this forum and others about after market Thermostats with lower opening temps, and I was wondering how you all felt about them on RB motors. I am about to buy a new OEM t-stat and Im curious if it would be worth it to get he Nismo t-stat.

I live in Texas and it gets hot, so cooling is a major thing in the summer for me, especially with the now working a/c raising my average operating temp.

thanks,
Daryl

[Nesquick]

i went with a nismo low temp thermostat in my 26, and im going to be hooking up this kit http://www.summitracing.com/parts/HDA-3647/ to switch the fans on at 70*C. there is nothing wrong with running a lil bit cooler. id go with the low temp if i was you

[Zacho2]

Stock ECU = No in my opinion

In my experience, the nismo t-stat will leave you in the last block of cold enrichment on the stock ecu maps causing you to drive around running rich. Also idles higher. However, it is a different story with a remapped ECU or a standalone.

If I were you, I would use methods other than a lower temp thermostat.

When it is 35 degrees C where I live, I don't have issues with cooling and all I have is silicone rad hoses and a twin core copper rad. I run a 75/25 water/coolant mix. A properly bled cooling system makes a world of a difference as well.

[Cjmartz2k]

Agreed. If you don't have some way to tune around the fact it will be in cold start mode, you don't need to even be thinking about running a lower temp t-stat. Besides, it doesn't really fix overheating anyways. It just adds more of a buffer since the system will start cooling sooner, but if it was going to overheat before, it'll still do it after. It might just take it an extra minute or two.

[silviasgp06]

I have a PFC and can tune around cold start warm up mode.

considering i dont have an over heating issue(i just run hotter with the ac on when its >90* out side ), will the earlier opening contribute to lower avg temps at all? if not, whats the benefit of having one?

right now I have 2 flewlite 392's pushing through the ac condenser to the rad. I know this isnt the most efficient way for cool. I plan on installing an ISIS intake mani, because ill have extra room behind the rad and will have to drain a large coolant I plan on moving one fan to the puller position mounted directly to the rad on the passenger side. I plan on also installing a Circuit sports radiator breather/swirl pot.
All those combined should bring lower temps. And i will be replacing the T-state while, so I want to know if it is worth it to go Nismo t-stat while im at it.

[Cjmartz2k]

If your cooling system is up to it, it'll stay colder with a lower temp T-stat. I'm just saying if you are overheating, a lower temp stat is only going to slightly delay the overheating which will happen anyways. Most people I know that try and run low temp T-stats are trying to fix overheating, but it sounds like that's not your case/question. Not to sure how much effect 20* cooler coolant temps with a proper tune would have though.