When doing a Thermostat is there any reason not to just skip 180* and go to 160*?
I will be adding 3.4pulley, and mayber plugs, PCM, FWI.

I may be ording the PCM today so that is the basis for the question.

Then, that'* your answer...

Ok parts ordered and per Todd Allen 180* with my mods and maybe 160* in summer or with more "intense" mods.
Pun intended

With just those mild mods, and going into winter, I'd definately say go with a 180. If you had more serious mods and/or it was summer I'd say go with a 160. But a 160 and winter don't go well together.

Shawn

You're heat will be lousy in the winter with a 160.

I wouldn't be too sure about that. I have a drilled 160 in my STE and have had it for about as long as I've had the car. We have a drilled 160 in the other 3.1 turbo GP as well. 160* heat is still plenty warm. It takes a little bit longer to warm up (not much longer though) due to them being drilled, but a non drilled 160 will not have noticably colder heat than a stock or 180*. The only reason I'd run a warmer tstat in the winter is because you want the engine to warm up to 212* from time to time to boil the water in the crankcase, and you also don't want it too cold for other reasons. In warmer weather the engine will run warmer than the 160* most of the time and you don't have too many problems.

Just my $.02.

I have a fairly heavily drilled 160 in my SSEi, and a mildly drilled 180 in the SLE (both L67'* for reference), and I notice the difference in how long it takes to get comfy inside as winter approaches. I'd do a 180 for now.

For my SSEi, it matters not. It'* being parked in the 'shop' for a little 'fun' this weekend, and won't emerge until spring.

My car with the drilled 180 hasn't been above 200* in quite some time - only a couple times this summer. How much does it matter in your opinion?

Wow, that right foot is gonna get awfully itchy over the next several months