supra newb overheating

vdesign · 06-25-2008, 05:48 PM

I do have a shroud on it, the duct taped one. the passenger side of the shroud is broke, so i can't bolt it in. (the whole shroud is still intact, just can't bolt it on)

I'll check the hoses again and see if the head gasket is torqued down enough.

The head gasket not torqued down enough makes the most sense to me

burton51m · 06-25-2008, 06:26 PM

If you go with a metal headgasket you know that the head and block have to be extremely smooth and resurfaced very well. The metal headgaskets are more picky then regular headgaskets in that situation.

SideWinderGX · 06-25-2008, 10:07 PM

Quote:

Originally Posted by burton51m

If you go with a metal headgasket you know that the head and block have to be extremely smooth and resurfaced very well. The metal headgaskets are more picky then regular headgaskets in that situation.

oops, didnt notice that.

+1...the head needs to be milled to a certain RA for the metal head gasket to seat properly.

supramacist · 06-25-2008, 11:42 PM

The easiest way for the system to suck air is through the overflow can.

The engine spits and sucks into and from this can. If you keep it empty there's your pirate air.

ARP states specs of 70 lbs of torque. So if your mechanic can't read or follow instructions. Get one that can.

I used a 2.mm HKS stopper gasket. I torqued to 85lbs. But that's me.

robertsws · 06-25-2008, 11:55 PM

when i first got my 87 supra non-turbo I had overheating problems too. Although at the same time my fan exploded and punctured my radiator. I thought that it was my fan clutch so i replaced the fan clutch, fan, and radiator and three weeks later the same thing happened. It turned out that all the trouble was due to me removing the plastic engine undercover. It caused the airflow into the engine compartment and through the radiator to be out of wack. IE. excess air flow from under the car into the engine bay and insufficient air flow through the radiator. That lack of air flow through the radiator is what caused my overheating problem. The excess air from under the car into the engine bay caused the fan blades to bend when driving and they hit on something (most likely the radiator) and broke off spinning about in the engine bay puncturing the radiator. Once i put the undercover back on i never had another problem with it overheating.

Although my 91 turbo doesn't have the undercover on it and i've got no problems with it. Nor does it have a fan shroud.

vdesign · 06-26-2008, 02:42 PM

thanks for all the help.

What about the small electric fan in the front? It hasn't been coming on and yesterday it only heated up to almost 3/4.

If the fan isn't it, I will be checking out the head gasket problems.

vdesign · 06-27-2008, 05:09 PM

some one suggested to me yesterday that i need to replace the fan clutch with a "flex fan".. has any done this? I have never heard of a flex fan.. looked it up and couldn't find much on it.

burton51m · 06-25-2008, 06:29 PM

Quote:

Originally Posted by vdesign

I do have a shroud on it, the duct taped one. the passenger side of the shroud is broke, so i can't bolt it in. (the whole shroud is still intact, just can't bolt it on)

my fan shroud is just like yours, broke around the bolts and loose, and i havent had any overheating problems.

06-25-2008, 06:26 PM	#2
burton51m Lexus & 550's Join Date: Feb 2006 Location: Canton, OH Posts: 536	If you go with a metal headgasket you know that the head and block have to be extremely smooth and resurfaced very well. The metal headgaskets are more picky then regular headgaskets in that situation. __________________

06-25-2008, 11:55 PM	#5
robertsws 3" Exhaust Join Date: May 2008 Location: Gaithersburg, Maryland Posts: 63	when i first got my 87 supra non-turbo I had overheating problems too. Although at the same time my fan exploded and punctured my radiator. I thought that it was my fan clutch so i replaced the fan clutch, fan, and radiator and three weeks later the same thing happened. It turned out that all the trouble was due to me removing the plastic engine undercover. It caused the airflow into the engine compartment and through the radiator to be out of wack. IE. excess air flow from under the car into the engine bay and insufficient air flow through the radiator. That lack of air flow through the radiator is what caused my overheating problem. The excess air from under the car into the engine bay caused the fan blades to bend when driving and they hit on something (most likely the radiator) and broke off spinning about in the engine bay puncturing the radiator. Once i put the undercover back on i never had another problem with it overheating. Although my 91 turbo doesn't have the undercover on it and i've got no problems with it. Nor does it have a fan shroud. __________________ 1991 Supra - Turbo - 5spd 60-1 upgraded turbo Lexus AFM 3" exhaust, 4" tip SAFC 2 550cc injectors (2 sets, venom direct fit, RC engineering) 2.5" intercooler and piping Aluminum radiator w/dual electric fans ARP bolts w/MHG Full-auto turbo timer Fidanza Flywheel & Stage 2 Clutch spark plugs and wires. power steering pump cold temp start switch engine top end rebuilt transmission opened up and inspected at a tranny shop when the flywheel and clutch installed last week. Last edited by robertsws; 06-26-2008 at 01:17 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Newb Owner of a 1987 Supra	PPPSSSOOO	MKIII Supra	3	04-04-2008 06:20 AM
Dream Offer	Karma_Supra	MKIV Supra	22	10-17-2007 03:04 PM
82 Supra overheating	suprahusker	MKII Supra	2	10-17-2007 01:59 AM
'92 Supra 7MGTE overheating - need help pls.	liona	MKIII Supra	7	05-19-2006 04:06 PM
Supra Newb Just checking in	Razor	Non-Generation Specific Questions	1	12-21-2005 04:15 AM

06-25-2008, 05:48 PM	#1
vdesign Stock Join Date: Jun 2008 Location: Tennessee Posts: 6	I do have a shroud on it, the duct taped one. the passenger side of the shroud is broke, so i can't bolt it in. (the whole shroud is still intact, just can't bolt it on) I'll check the hoses again and see if the head gasket is torqued down enough. The head gasket not torqued down enough makes the most sense to me

06-25-2008, 11:42 PM	#4
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	The easiest way for the system to suck air is through the overflow can. The engine spits and sucks into and from this can. If you keep it empty there's your pirate air. ARP states specs of 70 lbs of torque. So if your mechanic can't read or follow instructions. Get one that can. I used a 2.mm HKS stopper gasket. I torqued to 85lbs. But that's me.

06-26-2008, 02:42 PM	#6
vdesign Stock Join Date: Jun 2008 Location: Tennessee Posts: 6	thanks for all the help. What about the small electric fan in the front? It hasn't been coming on and yesterday it only heated up to almost 3/4. If the fan isn't it, I will be checking out the head gasket problems.

06-27-2008, 05:09 PM	#7
vdesign Stock Join Date: Jun 2008 Location: Tennessee Posts: 6	some one suggested to me yesterday that i need to replace the fan clutch with a "flex fan".. has any done this? I have never heard of a flex fan.. looked it up and couldn't find much on it.