Heat

[wreckwriter]

With increased power comes increased heat. I'm seeing higher ECT, engine oil temp and IAT readings since my latest install. Part of this is because the trans cooler is now blocking part of the radiator. Any thoughts or ideas?

[SRG963]

Bigger fans? Intercooler? Cowl hood?

[wreckwriter]

None of those are really available options without spending a ton of money.

[SRG963]

None of those are really available options without spending a ton of money.

Bags of dry ice on the intake? LOL :stooges:
http://www.spooledmotorsports.com/intercoolers.php

[GTPaul]

Thermostat and fan adjustment?

[GeorgeInNePa]

Thermostat and fan adjustment?

This might have to be the next step.

[wreckwriter]

This might have to be the next step.

You having the same issue George? i'm guessing yes...

[EcoBrick Bob]

NEP offers 160 deg. thermostats for about $35. shipped.

The stock T shows the opening temp in centigrade. The one I got from NEP shows no temp marking. Rubber gasket was not as thick as original and thermostat housing leaked until I put original gasket on new NEP thermostat. Without changing the fan operational temps, my engine temp is about 10 degrees lower at 75 deg. outside when the car is moving over 30 mph. I installed a similar 160 deg T in my Denali some years ago and am getting the same results. In stop and go traffic, or parked, the temp in both vehicles rises to stock 187 deg. or higher as fans control the water temp.

I have not noticed a reduction in fuel mileage. Currently am averaging 20.6 mpg in G8 in mixed driving over last 2K mi. This is almost 2 mpg better than I got in our 2005 Volvo 2.5 T wagon in similar driving.

RRM

[GeorgeInNePa]

My IATs haven't changed. The trans temp is a bit higher than normal(185ish) and the engine temps run right at 200.

[GTPprix]

Drill a couple 1/8" holes in the stock stat and call it good, those of you in cold climates 160 is far to cold. IE George ;)

[wreckwriter]

My ECT is running 205-215, oil temp is 210-219. IAT is fine while moving but goes up rapidly when standing still, up to 140 in traffic.

[GRRRR8]

Tom with your year round temps being what they are, put a 160 T-stat and have Kirk adjust fan speeds to compensate for cooler stat.

[wreckwriter]

Tom with your year round temps being what they are, put a 160 T-stat and have Kirk adjust fan speeds to compensate for cooler stat.

Thanks Charlie. Couple questions:
how much should I ask Kirk to adjust it?
Are those stats available at NAPA or anywhere other than mail? I wanted to do my hoses this weekend but will wait if I have to wait on stat by mail. i hate that UPS doesn't deliver Saturday :/

[Chewy]

UPS DOES deliver on Saturday!

Just costs and arm and a leg! Saturday Air.:mellow:

[wreckwriter]

UPS DOES deliver on Saturday!

Just costs and arm and a leg! Saturday Air.:mellow:

I'll bet it does cost. Any speed shops ship by Express Mail?

[GRRRR8]

Check the place that did your install. Since they do Vettes there is a chance they might have it. Some big name parts stores have them or can get in a day also. Since Mike at New Era installs the most of these, I would give him a buzz and ask about fan temps and tell him I suggested you call him on that info. If I had to guess, 165-172 degree on

[00 Trans Ram]

Tom - you're in S Fla, right? Get rid of your stock coolant and replace it with distilled water and Water Wetter or Purple Ice. It'll lower your water temps by 25*.

That's not a manufacturer's claim, either. I was running stock stuff in my TA one track day and blew a heater hose. Had to replace it with tap water (temporary fix - you should use distilled to avoid minerals). Friend had Water Wetter, so he let me have a bottle.

I had been running water temps of 240*. After the WW, my temps were around 215*. And, the 240* temps were in the early AM, and the 215* temps were in the afternoon, with ambient temps about 15* higher.

[Joe Weinstein]

I don't think the thermostat changes are going to help. Once they
open, you get all the cooling you're going to get. Even if they open
sooner, they can't add cooling capability. It's like if it's a really hot
day, and your house is at 75 degrees indoors and your air conditioner
is already on full blast, turning your thermostat down from 68 to 65
isn't going to change anything. In fact, all it will do is to keep your
motor a little cooler than it should be under light load conditions. Note
that oil works best around 180 degrees, and probably other tuning
parameters are optimized for the temps that the normal thermostat
maintains under regular driving.

[GRRRR8]

This is true, but with a stall converter a thermostat can be used to lower temps to a better range. The only other option would be a larger radiator, which I did do a search and is not available or listed at this time.

[wreckwriter]

both Kirk and Brent tell me I shouldn't worry about the temps. Factory fans don't go to high until 235! Crazy, ain't it? I have a shitload to learn about these modern engines....

[wreckwriter]

I do still need to decrease the IAT though. Charlie, did you ever make any block off plates?

[GRRRR8]

That was the plan for this week I had enough to make 3 and I owe Ed 1, but still no electricity. I will save 1 for you.

[wreckwriter]

That was the plan for this week I had enough to make 3 and I owe Ed 1, but still no electricity. I will save 1 for you.

ok, thanks.

[GRRRR8]

Did they hook your trans cooler in line with the factory 1 or isolate it. I have seen isolating it in warm climates, as long as the add on cooler is big enough, that it will drop engine temps due to the cooling sytem is not used to cool the trans fluid.

[wreckwriter]

Did they hook your trans cooler in line with the factory 1 or isolate it. I have seen isolating it in warm climates, as long as the add on cooler is big enough, that it will drop engine temps due to the cooling sytem is not used to cool the trans fluid.

Its in series with the factory cooler. Need to consider Louisiana weather too. trans temp is actually down from previous; that was one of my biggest worries originally.

[GRRRR8]

Trans temp is lower then stock.... thats good! The radiator efficiency must not be adequate with the stall. Do the thermostat or drill 2-3 1/8 holes in the stocker and bump the fans down 10-15 degrees

[wreckwriter]

Trans temp is lower then stock.... thats good! The radiator efficiency must not be adequate with the stall. Do the thermostat or drill 2-3 1/8 holes in the stocker and bump the fans down 10-15 degrees

Thanks Charlie.

[GeorgeInNePa]

Its in series with the factory cooler. Need to consider Louisiana weather too. trans temp is actually down from previous; that was one of my biggest worries originally.

What's your trans temp, average?

[wreckwriter]

What's your trans temp, average?

180ish if I'm driving aggressively.

[wreckwriter]

OK, while I was doing my heater hoses I put two 1/8" holes in the stat. We'll see how she does. Thanks guys!

[GRRRR8]

Let me know your temp drop so far with the holes only.

[wreckwriter]

Yes, I'll get out later today. This is house chore day :(

[GRRRR8]

I am glad to get the hell outta the house!

[fueltrimjesus]

My IATs haven't changed. The trans temp is a bit higher than normal(185ish) and the engine temps run right at 200.
sounds perfect for any modern drivetrain...no worries.
engine temp 0ver 230 is cause for concern