180 thermo -vs- 160
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I noticed most of you have the 180 thermo mod and only a few the 160. Is there an advantage to the 180 over the 160? Wouldn't the 160 be the 'cooler' mod?
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Originally Posted by jwikoff99
Drilled one or more holes in the rim of the thermo, so coolant can always flow just a little.
Anyone got any pix?
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Well, I did it when I used a 180. Two holes, close to the center on the outer rim, maybe 1/16" or 3/32". You could do up to four, I've heard. I don't have any pics, but here is a pic from ZZP (I hope they don't mind):
![](http://www.zzperformance.com/images/thermostat_180_180.jpg)
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Originally Posted by willwren
the 160 would be pretty much dedicated to track use. Your PCM wouldn't like it for a daily driver.
I prefer a drilled 180 myself.
I prefer a drilled 180 myself.
A 160 would be too cold for street use only. A 180 on the other hand works well, especially if you drill no more than 2 - 1/16" holes in it too. a 160 will NEVER let the engine come up to operating temp for the ECU/PCM & will throw code after code too. A 180 will not throw a code unless something else is at fault.
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