Running Hot

Benesesso · 03-02-2008, 01:22 AM

I've had this problem with both of my turbo Supras. I found a radiator shop that built me a couple of 3 row radiators. They helped, but the cars still run hot in the Phoenix summers. I changed the fan in the 1990 to a direct-drive stainless steel flex fan, and that helped, but it's a bit noisy.

In the summer, at ~110+ deg., both cars get up to ~220-230, on accurate gages, and the faster I drive the hotter they get. I run 50% antifreeze to keep the boiling point high. Both cars have good head gaskets.

I am convinced that Toyota screwed up and should have provided for a lot more airflow thru the rad.

sd88supra · 03-02-2008, 06:47 AM

^You should ask mrnickeleye about keeping your turbos cool. He lives in the desert as well and made some modifications to his N/A to keep it running cool, and they might help your turbos. Only I can't remember exactly what he did, but it had to do with cutting something out to increase the hot air flowing out.

mkiiisupra · 03-02-2008, 12:16 PM

The rubber seal that runs along the back of the engine bay above the firewall.... I know he removed that. it helps some heat escape through there.

Also make sure ur radiator cap is in good condition

supramacist · 05-30-2008, 06:41 PM

Quote:

Originally Posted by Benesesso

I've had this problem with both of my turbo Supras. I found a radiator shop that built me a couple of 3 row radiators. They helped, but the cars still run hot in the Phoenix summers. I changed the fan in the 1990 to a direct-drive stainless steel flex fan, and that helped, but it's a bit noisy.

In the summer, at ~110+ deg., both cars get up to ~220-230, on accurate gages, and the faster I drive the hotter they get. I run 50% antifreeze to keep the boiling point high. Both cars have good head gaskets.

I am convinced that Toyota screwed up and should have provided for a lot more airflow thru the rad.

Do an ac delete and get rid of the condensor blocking the radiator.

SC: Is this the same mechanic that unplugged your coolant sensor??
If it is. Find a new one or start gearing up to get dirty. Because if this guy didn't know about the sensor. You don't want him near the internals.
This is your car not a guinnea pig.

CyFi6 · 05-31-2008, 01:31 AM

a new engine is going to be just as costly, if not more, and probably will blow a head gasket within a short time if its on the original gasket

Benesesso · 05-31-2008, 03:09 AM

>"Do an ac delete and get rid of the condensor blocking the radiator."<

Except that I live near Phoenix, and the days may not get below 100+ until October----.

dj7mge · 06-01-2008, 12:11 AM

rebuild what you have use a stronger gasket and try some water wetter it works really good for about 3months my dad uses it in his drag car dropped his operating temp from 220 to 180-200

JPJ · 06-03-2008, 03:21 PM

Quote:

Originally Posted by supramacist

Do an ac delete and get rid of the condensor blocking the radiator.

SC: Is this the same mechanic that unplugged your coolant sensor??
If it is. Find a new one or start gearing up to get dirty. Because if this guy didn't know about the sensor. You don't want him near the internals.
This is your car not a guinnea pig.

Exactly!!!
The fact that your mechanic did this leaves little room for doubting the fact that he is indeed a moron.

supradaddy0803 · 06-03-2008, 07:14 PM

Well as for a new motor you could get a 40k and drop it in but might as well do the head gasket when it is out and then drop it in. Other than that you could just upgrade like I did and get rid of the head gasket issues all together. But seeing as your having a mechanic do your work then I would say a upgrade would be out of the question seeing as the labor itself would kill you. But as for motors you can get a 40k 7mgte for like 700 bucks so I dont see how that is a ton more money. Plus look around you there might be a person from here that would be willing to help you do your HG and save you some money.

Benesesso · 06-04-2008, 02:23 PM

>"Other than that you could just upgrade like I did and get rid of the head gasket issues all together."<

How is it different?

03-02-2008, 01:22 AM	#1
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	I've had this problem with both of my turbo Supras. I found a radiator shop that built me a couple of 3 row radiators. They helped, but the cars still run hot in the Phoenix summers. I changed the fan in the 1990 to a direct-drive stainless steel flex fan, and that helped, but it's a bit noisy. In the summer, at ~110+ deg., both cars get up to ~220-230, on accurate gages, and the faster I drive the hotter they get. I run 50% antifreeze to keep the boiling point high. Both cars have good head gaskets. I am convinced that Toyota screwed up and should have provided for a lot more airflow thru the rad. __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

03-02-2008, 06:47 AM	#2
sd88supra 3" Exhaust Join Date: Oct 2005 Location: San Diego, Ca Posts: 190	^You should ask mrnickeleye about keeping your turbos cool. He lives in the desert as well and made some modifications to his N/A to keep it running cool, and they might help your turbos. Only I can't remember exactly what he did, but it had to do with cutting something out to increase the hot air flowing out. __________________ -1987 5 spd N/A with TEMS: low miles! All stock with the exception of electric fans and an '89 front bumper, Yokohama 225/50/16 with stock rims. It's a mess and in the garage. -1987 5 spd Turbo with TEMS: miss-matched tires, needs lots of work, but it runs! Project car. -1988 N/A auto targa: all stock except 18" rims with Falken 265/35/18 in rear and 225/35/18 in front; daily driver.

03-02-2008, 12:16 PM	#3
mkiiisupra Lexus & 550's Join Date: Sep 2007 Location: Las Vegas, NV Posts: 570 Blog Entries: 1	The rubber seal that runs along the back of the engine bay above the firewall.... I know he removed that. it helps some heat escape through there. Also make sure ur radiator cap is in good condition __________________ 1990 Toyota Supra Turbo A/T ------------------------------------------------ Questions about oil? take a look http://www.supramania.com/aehaas/

05-31-2008, 03:09 AM	#6
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	>"Do an ac delete and get rid of the condensor blocking the radiator."< Except that I live near Phoenix, and the days may not get below 100+ until October----. __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

06-03-2008, 07:14 PM	#9
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	Well as for a new motor you could get a 40k and drop it in but might as well do the head gasket when it is out and then drop it in. Other than that you could just upgrade like I did and get rid of the head gasket issues all together. But seeing as your having a mechanic do your work then I would say a upgrade would be out of the question seeing as the labor itself would kill you. But as for motors you can get a 40k 7mgte for like 700 bucks so I dont see how that is a ton more money. Plus look around you there might be a person from here that would be willing to help you do your HG and save you some money. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

05-31-2008, 01:31 AM	#5
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	a new engine is going to be just as costly, if not more, and probably will blow a head gasket within a short time if its on the original gasket

06-01-2008, 12:11 AM	#7
dj7mge Stock Join Date: Mar 2008 Location: milwaukee,WI Posts: 18	rebuild what you have use a stronger gasket and try some water wetter it works really good for about 3months my dad uses it in his drag car dropped his operating temp from 220 to 180-200

06-04-2008, 02:23 PM	#10
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	>"Other than that you could just upgrade like I did and get rid of the head gasket issues all together."< How is it different? __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras

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