Overheating

Dzire · 08-16-2008, 06:24 PM

I have a 1988 TII and it just hit 250 degree's. I would like to ask how much damage I could have done to the motor? I am planing on pulling the motor out to do a rebuild. Thank you for all your help in this matter.

BLKTOPTRVL · 08-16-2008, 07:35 PM

I would imagine the range of damage could be from "none" to "a lot."

Does it really matter how much damage poeple think has been done when you will be pulling the motor out and examining it?

I overheated my motor years ago. It soldiered on for a number of years until I took it apart. When I did, I saw a lot of damage to the housings and to one plate. Was it all heat damage? Who knows? (I am sure someone does, but the point for me is that it doesn't really matter.)

Either way. I hope your damaage is mild and that you will get a thrill like I did when taking my engine apart. When I did so, all the things (parts, systems, reasons things do and don't work) started to make more sense.

Ender · 08-17-2008, 01:45 PM

You can warp the irons, and if it gets severe enough you can probably bind seals and or open holes between the compression chambers and the coolant system, both of which can result in severe wear or catastrophic engine failure. Try not to overheat these, it can be evil to them.

Since you overheated it, when you examine your irons and housings make sure you check carefully for overall flatness.

JunpoweR · 08-25-2008, 03:39 PM

To all of the above replies!

Most likely you will have blown cooling seals to start with.
How come you overheated?
Low on coolant or just racing your motor for a long time?
Check your cooling system for bubbles and if you see any milky-ness or foam u got blown cooling jacket seals.
Since your rebuilding it shouldn't be a problem if your motoris still running but you might hav to replace a front or center iron. The seat fo the cooling seals are very thin in some areas causing them to crack and become unusable.

classicauto · 08-26-2008, 06:45 AM

But before you rebuild. Determine why the car overheated as suggested. Otherwise you'll end up in the same boat.

08-16-2008, 06:24 PM	#1
Dzire Rotary Fanatic Join Date: Apr 2008 Location: B,ham AL/Hollywood FL Posts: 151 Rep Power: 18	Overheating I have a 1988 TII and it just hit 250 degree's. I would like to ask how much damage I could have done to the motor? I am planing on pulling the motor out to do a rebuild. Thank you for all your help in this matter. __________________ RX8 2004 GT RX7 1988 TII

08-16-2008, 07:35 PM	#2
BLKTOPTRVL Rotary Fanatic Join Date: Feb 2008 Posts: 192 Rep Power: 18	I would imagine the range of damage could be from "none" to "a lot." Does it really matter how much damage poeple think has been done when you will be pulling the motor out and examining it? I overheated my motor years ago. It soldiered on for a number of years until I took it apart. When I did, I saw a lot of damage to the housings and to one plate. Was it all heat damage? Who knows? (I am sure someone does, but the point for me is that it doesn't really matter.) Either way. I hope your damaage is mild and that you will get a thrill like I did when taking my engine apart. When I did so, all the things (parts, systems, reasons things do and don't work) started to make more sense. __________________ ...shoot a mother-humpin moose, eight days of the week... Last edited by BLKTOPTRVL; 08-16-2008 at 07:48 PM.

08-25-2008, 03:39 PM	#4
JunpoweR Rotary Fan in Training Join Date: May 2008 Posts: 66 Rep Power: 0	To all of the above replies! Most likely you will have blown cooling seals to start with. How come you overheated? Low on coolant or just racing your motor for a long time? Check your cooling system for bubbles and if you see any milky-ness or foam u got blown cooling jacket seals. Since your rebuilding it shouldn't be a problem if your motoris still running but you might hav to replace a front or center iron. The seat fo the cooling seals are very thin in some areas causing them to crack and become unusable. __________________ --^v--JunpoweR--^v-- "90 GTUs Crystal White GT35 WB TA Project "90 GTUs Brilliant Black Restoration 1984 GSL-SE Daily

08-26-2008, 06:45 AM	#5
classicauto crash auto?fix auto Join Date: Feb 2008 Posts: 816 Rep Power: 18	But before you rebuild. Determine why the car overheated as suggested. Otherwise you'll end up in the same boat.