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After reading RDFronty's post(and i few others) I finally did it myself, should never have waited to do it. The install is a little bit of a pain, but not too bad. I refused to remove the fan and shroud so that might have made it easier. All said and done, it took about 45 minutes start to finish, including refill and air bleed of the system. Now onto the results:
With the temp in the 20s-30s lately, the truck was running @ 190-192 at cruising speeds, and would jump up to 197 on long inclines(I live in the mountains), in the summer it wasnt unusual to see it hit 200-202 after a long uphill climb. At idle (about 10 minutes) it would sit at 190. After the install on the way home, it ran at 177 for almost 24 miles with one little jump to 179 for about 5 seconds. Once I hit the mountain road, it never went over 181. So she's running right in the sweet spot temp wise.
The thermostat also solved a weird little thing I've get every now and then. I noticed after running it hard(a good WOT run or whenI was messing around) when I came to a stop, the idle would be a little high @ 675 and the timing would be at 15* when usually its at 625 and 17*. I had asked [email protected] if he knew anything, and we couldnt really figure it out. If I drove normal it never happened unless it was REALLY hot out. I removed the timing advance and the problem seemed to stop or only happen rarely. I guess it was the truck cutting the timing back when it got hot, becase it does not do it now. I checked some of my datalogs from the past and it would seem it is temperature related. With the truck running at 197 and at WOT the timing would get up to 44* under first gear, then drop to 42 and would never go back to 44* even after a return to idle. Doing a datalog today, it hits 44* on back to back runs( a total of 4), and the temp never went over 182. So I guess it's happy now, as am I.
One thing to note about the thermostat in relation to the Nismo Stat. Our trucks go to full idle @ 168*, anything lower than that the idle is bumped up a little since its not reading that it is full warm. When I was coming down the mountains the temp dropped down to 172*. Another 4 degrees and the truck would be thingking it's not warmed up. So unless you live in the deep south or your modded to the hilt, I would say the normal 350Z stat is a better choice than the nismo. And just in case anyone is wondering what the Nissan part# is for the 350Z stat, it's 21200-4w01b.
Here's some specs on the stock versus 350Z stats
Valve opening Temp:
Stock: 177-182
350Z: 169-174
Max Valve lift temp:
Stock: 203
350Z: 194
Valve Closing Temp:
Stock: 171
350Z: 160
With the temp in the 20s-30s lately, the truck was running @ 190-192 at cruising speeds, and would jump up to 197 on long inclines(I live in the mountains), in the summer it wasnt unusual to see it hit 200-202 after a long uphill climb. At idle (about 10 minutes) it would sit at 190. After the install on the way home, it ran at 177 for almost 24 miles with one little jump to 179 for about 5 seconds. Once I hit the mountain road, it never went over 181. So she's running right in the sweet spot temp wise.
The thermostat also solved a weird little thing I've get every now and then. I noticed after running it hard(a good WOT run or whenI was messing around) when I came to a stop, the idle would be a little high @ 675 and the timing would be at 15* when usually its at 625 and 17*. I had asked [email protected] if he knew anything, and we couldnt really figure it out. If I drove normal it never happened unless it was REALLY hot out. I removed the timing advance and the problem seemed to stop or only happen rarely. I guess it was the truck cutting the timing back when it got hot, becase it does not do it now. I checked some of my datalogs from the past and it would seem it is temperature related. With the truck running at 197 and at WOT the timing would get up to 44* under first gear, then drop to 42 and would never go back to 44* even after a return to idle. Doing a datalog today, it hits 44* on back to back runs( a total of 4), and the temp never went over 182. So I guess it's happy now, as am I.
One thing to note about the thermostat in relation to the Nismo Stat. Our trucks go to full idle @ 168*, anything lower than that the idle is bumped up a little since its not reading that it is full warm. When I was coming down the mountains the temp dropped down to 172*. Another 4 degrees and the truck would be thingking it's not warmed up. So unless you live in the deep south or your modded to the hilt, I would say the normal 350Z stat is a better choice than the nismo. And just in case anyone is wondering what the Nissan part# is for the 350Z stat, it's 21200-4w01b.
Here's some specs on the stock versus 350Z stats
Valve opening Temp:
Stock: 177-182
350Z: 169-174
Max Valve lift temp:
Stock: 203
350Z: 194
Valve Closing Temp:
Stock: 171
350Z: 160
