My new setup gets seemingly high coolant temps - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Greenhornet2 · 07-16-2019, 08:02 PM

I'm running a whipple with 10psi. 160 tstat. 1 quart of water wetter in the cooling system. A/C on i don't go above 200 and am also around 180 driving down the road. My headers aren't even ceramic coated. 574whp my fans are always on i believe, they tuned it that way. Conservative tune but stock cooking system other than that tstat and water wetter. Stock internals

Vegas Bound · 07-16-2019, 11:06 PM

114° here today and temp never got past 200°. But it is a dry heat.

UNRIVALED SS · 07-17-2019, 12:00 AM

What the majority doesn’t realize is, when you run a 416 or 427 strokes engine, first you are simply moving more air per revolution. This alone equals more heat. Two the rod ratio goes down. My 427 has about a 1.49 rod ratio which there is substantially more side thrust from the piston against the cylinder wall. Alone with other factors as well. So, when someone with a stock displacement 374 inch motor says it stays cool. Of course it does, Chevy made sure the 6.2 liter would cool pretty much regardless. So if that’s what you have good on you but it’s easier to cool an engine with 54 cubic inches less displacement when compared to a 427. It matters. All these factors are relevant but I makes power and it makes torque in greater amounts all things being equal . Like anything here is a trade off .

Greenhornet2 · 07-17-2019, 09:02 AM

I missed the part where it was larger displacement

hammdo · 07-17-2019, 09:06 AM

First post - ‘416 with all the goodies’

-Don

Juiced1 · 07-17-2019, 09:12 AM

We have a few radiator upgrade options. Make sure you grab a 160 degree thermostat first. I would also have your tuner check your fan temps and make sure they are coming on earlier then stock and like mentioned above make sure you don't have air in your line. Any air in the cooling system will cause problems.

eLeSthree · 07-17-2019, 10:42 AM

Quote:

Originally Posted by eLeSthree

I'm also on the stock radiator and fans and displacement.

In Florida its about 90 degrees and I run the AC full time. Never gets over 210.

Have you tried to burp the coolant system? Sounds like you may have air trapped in the system.

The shop did all the work, right? Trust, but verify!

Burping the system wont take much effort at all. Open the coolant reservoir or radiator cap (which ever is higher) and run the car until it gets hot enough for the thermostat to open. You should see the water flowing, and if there is air trapped, the reservoir tank will empty. Fill it to FULL and let it keep running until it stays full.

Its FREE! I would check this first.

hazy · 07-17-2019, 05:39 PM

yep, so here's the updated as of earlier this morning:

Going to burp coolant tonight - I absolutely agree with "trust but verify"

Talked again with the shop, and they're going to adjust fan temps to come on earlier - I believe they kick on @ 203 currently, not sure where that relates to stock, but this thing hasn't been stock in a long while, only the blower is the recent mod

if the burping and fan temp settings don't adjust, we're going to look into other options, but they seem pretty confident that the fan temp settings should help.

I guess I'll keep this updated as things progress. Dropping at the shop on the 29th for the smaller pulley and dyno tune, so hopefully I have positive news the following day!!

eLeSthree · 07-18-2019, 02:26 PM

Quote:

Originally Posted by hazy

yep, so here's the updated as of earlier this morning:

Going to burp coolant tonight - I absolutely agree with "trust but verify"

Talked again with the shop, and they're going to adjust fan temps to come on earlier - I believe they kick on @ 203 currently, not sure where that relates to stock, but this thing hasn't been stock in a long while, only the blower is the recent mod

if the burping and fan temp settings don't adjust, we're going to look into other options, but they seem pretty confident that the fan temp settings should help.

I guess I'll keep this updated as things progress. Dropping at the shop on the 29th for the smaller pulley and dyno tune, so hopefully I have positive news the following day!!

My fan temp settings are stock and they look like this. If you fan is only running when you hit 203 degrees, something is wrong. It should spin at 50% power when you hit 192, than ramp up.

hazy · 07-18-2019, 06:16 PM

Oh good to know on the fan settings - perhaps I have a fan that's gone out? I don't know, but will ask the tuner to check on that. Haven't seen the tables, and prob woudln't even know what I'm looking at anyhow hahaha

Brief update - burped the radiator last night, and definitely had some pockets of air in there. Didn't take a ton of coolant to replace, but I did top everything off and the ride in this morning was a bit better, though still seeing the issue.

I'm wondering if the low-speed fan is operable...not sure how to test/check this, but I'm going on vacation tomorrow and dropping the car on the day I return, so not gonna worry about it at this point.

I'll keep yall updated, thanks so much for being this helpful!!!

hazy · 07-31-2019, 10:40 AM

Alright good update here! Shop got the new pulley on and she's definitely laying down some powaa.

Heat issue has been identified- my passenger side fan is inoperable, so we anticipate that once I have full capacity with the fans, I should be squared away. All connectors were checked, and the fan was tested w no relays or fuses in the way- just pulled the connector off the motors and tested them direct.

Will report back once that's repaired, hopefully soon!

UNRIVALED SS · 08-01-2019, 10:26 PM

I`ll ask the opinion of the masses here also. What do most consider the max temp they are comfortable with for a LS motor? I see fairly new corvettes running 230-235. So I`m wondering when most people get nervous about engine temp.

hazy · 08-01-2019, 11:24 PM

First a quick update: got the new fans in today and I dropped it in. The plastic kinda marred up the intercooler piping a bit, but its done. Positive indicators on the test drive, but the commute to work tomorrow will tell the truth.

Unrivaled: I don't know the answer, but I'd say that an ideal temp is probably south of 220 or 225, but I can't really speak to what is unsafely high. I will say that once a long time ago I got a warning at something like 240 and the DIC said "cool this mfer down right now, and turn the ac off" so perhaps 230+ is territory to be avoided for extended periods?

hazy · 08-02-2019, 11:00 AM

final update! new fans worked! Drove into the office today using AC for the first time this summer...what a relief!!

07-16-2019, 08:02 PM	#15
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	I'm running a whipple with 10psi. 160 tstat. 1 quart of water wetter in the cooling system. A/C on i don't go above 200 and am also around 180 driving down the road. My headers aren't even ceramic coated. 574whp my fans are always on i believe, they tuned it that way. Conservative tune but stock cooking system other than that tstat and water wetter. Stock internals __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

07-17-2019, 09:02 AM	#18
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	I missed the part where it was larger displacement __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

07-17-2019, 09:06 AM	#19
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,709 View My Garage	First post - ‘416 with all the goodies’ -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

07-16-2019, 11:06 PM	#16
Vegas Bound Account Suspended Drives: 2013 Sparkly Red One Join Date: Dec 2018 Location: Hospitality State Posts: 2,558	114° here today and temp never got past 200°. But it is a dry heat.

07-17-2019, 12:00 AM	#17
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 705 View My Garage	What the majority doesn’t realize is, when you run a 416 or 427 strokes engine, first you are simply moving more air per revolution. This alone equals more heat. Two the rod ratio goes down. My 427 has about a 1.49 rod ratio which there is substantially more side thrust from the piston against the cylinder wall. Alone with other factors as well. So, when someone with a stock displacement 374 inch motor says it stays cool. Of course it does, Chevy made sure the 6.2 liter would cool pretty much regardless. So if that’s what you have good on you but it’s easier to cool an engine with 54 cubic inches less displacement when compared to a 427. It matters. All these factors are relevant but I makes power and it makes torque in greater amounts all things being equal . Like anything here is a trade off .

07-17-2019, 09:12 AM	#20
Juiced1 Account Suspended Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011 Location: St. Charles, IL Posts: 18,648	We have a few radiator upgrade options. Make sure you grab a 160 degree thermostat first. I would also have your tuner check your fan temps and make sure they are coming on earlier then stock and like mentioned above make sure you don't have air in your line. Any air in the cooling system will cause problems.

07-17-2019, 05:39 PM	#22
hazy Drives: 2011 2SS/RS Join Date: Feb 2014 Location: H-Town Posts: 1,037	yep, so here's the updated as of earlier this morning: Going to burp coolant tonight - I absolutely agree with "trust but verify" Talked again with the shop, and they're going to adjust fan temps to come on earlier - I believe they kick on @ 203 currently, not sure where that relates to stock, but this thing hasn't been stock in a long while, only the blower is the recent mod if the burping and fan temp settings don't adjust, we're going to look into other options, but they seem pretty confident that the fan temp settings should help. I guess I'll keep this updated as things progress. Dropping at the shop on the 29th for the smaller pulley and dyno tune, so hopefully I have positive news the following day!!

07-18-2019, 06:16 PM	#24
hazy Drives: 2011 2SS/RS Join Date: Feb 2014 Location: H-Town Posts: 1,037	Oh good to know on the fan settings - perhaps I have a fan that's gone out? I don't know, but will ask the tuner to check on that. Haven't seen the tables, and prob woudln't even know what I'm looking at anyhow hahaha Brief update - burped the radiator last night, and definitely had some pockets of air in there. Didn't take a ton of coolant to replace, but I did top everything off and the ride in this morning was a bit better, though still seeing the issue. I'm wondering if the low-speed fan is operable...not sure how to test/check this, but I'm going on vacation tomorrow and dropping the car on the day I return, so not gonna worry about it at this point. I'll keep yall updated, thanks so much for being this helpful!!!

07-31-2019, 10:40 AM	#25
hazy Drives: 2011 2SS/RS Join Date: Feb 2014 Location: H-Town Posts: 1,037	Alright good update here! Shop got the new pulley on and she's definitely laying down some powaa. Heat issue has been identified- my passenger side fan is inoperable, so we anticipate that once I have full capacity with the fans, I should be squared away. All connectors were checked, and the fan was tested w no relays or fuses in the way- just pulled the connector off the motors and tested them direct. Will report back once that's repaired, hopefully soon!

08-01-2019, 10:26 PM	#26
UNRIVALED SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: El Paso Posts: 705 View My Garage	I`ll ask the opinion of the masses here also. What do most consider the max temp they are comfortable with for a LS motor? I see fairly new corvettes running 230-235. So I`m wondering when most people get nervous about engine temp.

08-01-2019, 11:24 PM	#27
hazy Drives: 2011 2SS/RS Join Date: Feb 2014 Location: H-Town Posts: 1,037	First a quick update: got the new fans in today and I dropped it in. The plastic kinda marred up the intercooler piping a bit, but its done. Positive indicators on the test drive, but the commute to work tomorrow will tell the truth. Unrivaled: I don't know the answer, but I'd say that an ideal temp is probably south of 220 or 225, but I can't really speak to what is unsafely high. I will say that once a long time ago I got a warning at something like 240 and the DIC said "cool this mfer down right now, and turn the ac off" so perhaps 230+ is territory to be avoided for extended periods?

08-02-2019, 11:00 AM	#28
hazy Drives: 2011 2SS/RS Join Date: Feb 2014 Location: H-Town Posts: 1,037	final update! new fans worked! Drove into the office today using AC for the first time this summer...what a relief!!