Please help with the heat

tdurbin · May 12th, 2006, 09:33 AM

I have an 88 gt conv. My Mods are on an original 302 block.I have upgraded to mass air, installed gt 40 heads w/roller rockers and hardened push rods. gt 40 intake upper and lower and an E cam. There is a new water pump and radiator but the temp keeps climbing to around 260 on normal driving, highway and street. The timing has been checked and is good. The thermostat is a brand new 180 degree. The only thing I noticed is that the overflow tank has a small crack around midway up. Could this be causing my problem or something else? Any help would be appreciated.

Twist 2 Go · May 12th, 2006, 09:50 AM

ck the clutch fan, also make sure it has the correct rotation water pump and the belt is routed the correct way.

tdurbin · May 12th, 2006, 09:54 AM

Clutch is new. I forgot to mention the smog pump is deleted and fan is routed correctly. As for the water oump I had someone elde install for me I didn't have any time to work on it, he knows a lot about stangs so i know is has to be correct flow. Even he has no idea what it caould be.

1slo5.0 · May 12th, 2006, 10:03 AM

Did the problem start after you did the heads? Could be air in the system.

tdurbin · May 12th, 2006, 10:10 AM

since the heads were done they were checked twice gaskets are correct as well as compresion.

1slo5.0 · May 12th, 2006, 08:08 PM

Originally Posted by tdurbin

since the heads were done they were checked twice gaskets are correct as well as compresion.

Gasket sealing has nothing to do with it. When you drain the cooling system and refill it air pockets develop. If you don't get them out you will have over heating issues. Air pockets are very common after doing a head swap and are not hard to get rid of.

stang fanatic · May 13th, 2006, 02:32 AM

RUN CAR TO 268? AN SHUT OFF. GRAB FAN AND SEE IF STIFF OR LOOSE TO SPIN. IF LOOSE OR EASY...CLUTCH NO GOOD. OR IS IT A FLEX FAN? DO YOU STILL HAVE THE SHROUD ON???

tdurbin · May 14th, 2006, 12:54 AM

If i have a crack in my overflow tank would that create air pockets in my cooling?

stang fanatic · May 14th, 2006, 01:10 AM

no.....but wont suck back coolant when needed (in theory).

IcantDo55 · May 14th, 2006, 02:06 AM

What gauge are you using for the temps?
260*?

Hollywood · May 19th, 2006, 02:21 AM

"no.....but wont suck back coolant when needed (in theory)."

If your street stang is pulling coolant from the reserve, then your in trouble on a different level.

Run the car to about 240 on the gauge, turn the headlights on full way, then get under the passenger side and see if there's any white smoke...

Let it rest, then repeat with the headlights off.

If you're not getting any smoke, then your not vaporizing your water flow.

Can your friend do a controlled environment test to see if the car begins to ping-out after you break 270?

It could just be an electrical mis-read by your gauge.

1slo5.0 · May 19th, 2006, 09:38 AM

Originally Posted by Hollywood

If your street stang is pulling coolant from the reserve, then your in trouble on a different level.

Why would you be in trouble? The closed system is designed to push coolant into the reserve tank and pull coolant back out. I don't see what "trouble" you are refering to.

Hollywood · May 19th, 2006, 12:15 PM

If your stock parts are working, you'd be in trouble.....you'd be in the twighlight zone.

May 12th, 2006, 09:33 AM	#1
tdurbin Newbie Join Date: Apr 2006 Posts: 19 iTrader: 0 reviews	Please help with the heat I have an 88 gt conv. My Mods are on an original 302 block.I have upgraded to mass air, installed gt 40 heads w/roller rockers and hardened push rods. gt 40 intake upper and lower and an E cam. There is a new water pump and radiator but the temp keeps climbing to around 260 on normal driving, highway and street. The timing has been checked and is good. The thermostat is a brand new 180 degree. The only thing I noticed is that the overflow tank has a small crack around midway up. Could this be causing my problem or something else? Any help would be appreciated.

May 12th, 2006, 09:50 AM	#2
Twist 2 Go Hardcore Enthusiast Join Date: Aug 2005 Location: Chesapeake, Virginia Posts: 1,716 iTrader: 0 reviews	ck the clutch fan, also make sure it has the correct rotation water pump and the belt is routed the correct way. __________________ 88 Mustang Coupe 2006 FFW Richmond True Street Runner-Up www.rickscarcare.net

May 12th, 2006, 10:03 AM	#4
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Did the problem start after you did the heads? Could be air in the system. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

May 13th, 2006, 02:32 AM	#7
stang fanatic Enthusiast Join Date: May 2006 Location: El Paso, Tx Posts: 855 iTrader: 0 reviews	RUN CAR TO 268? AN SHUT OFF. GRAB FAN AND SEE IF STIFF OR LOOSE TO SPIN. IF LOOSE OR EASY...CLUTCH NO GOOD. OR IS IT A FLEX FAN? DO YOU STILL HAVE THE SHROUD ON??? __________________ "The gods too are fond of a joke." "If I had only known, I would have been a locksmith. "

May 14th, 2006, 01:10 AM	#9
stang fanatic Enthusiast Join Date: May 2006 Location: El Paso, Tx Posts: 855 iTrader: 0 reviews	no.....but wont suck back coolant when needed (in theory). __________________ "The gods too are fond of a joke." "If I had only known, I would have been a locksmith. "

May 12th, 2006, 09:54 AM	#3
tdurbin Newbie Join Date: Apr 2006 Posts: 19 iTrader: 0 reviews	Clutch is new. I forgot to mention the smog pump is deleted and fan is routed correctly. As for the water oump I had someone elde install for me I didn't have any time to work on it, he knows a lot about stangs so i know is has to be correct flow. Even he has no idea what it caould be.

May 12th, 2006, 10:10 AM	#5
tdurbin Newbie Join Date: Apr 2006 Posts: 19 iTrader: 0 reviews	since the heads were done they were checked twice gaskets are correct as well as compresion.

May 14th, 2006, 12:54 AM	#8
tdurbin Newbie Join Date: Apr 2006 Posts: 19 iTrader: 0 reviews	If i have a crack in my overflow tank would that create air pockets in my cooling?

May 14th, 2006, 02:06 AM	#10
IcantDo55 Enthusiast Join Date: Aug 2005 Location: Va Beach VA Posts: 590 iTrader: 0 reviews	What gauge are you using for the temps? 260*? __________________ -Mike Link to My Site Want to Play Some Pool??? Stroked and Blown!

May 19th, 2006, 02:21 AM	#11
Hollywood Newbie Join Date: May 2006 Posts: 24 iTrader: 0 reviews	"no.....but wont suck back coolant when needed (in theory)." If your street stang is pulling coolant from the reserve, then your in trouble on a different level. Run the car to about 240 on the gauge, turn the headlights on full way, then get under the passenger side and see if there's any white smoke... Let it rest, then repeat with the headlights off. If you're not getting any smoke, then your not vaporizing your water flow. Can your friend do a controlled environment test to see if the car begins to ping-out after you break 270? It could just be an electrical mis-read by your gauge.

May 19th, 2006, 12:15 PM	#13
Hollywood Newbie Join Date: May 2006 Posts: 24 iTrader: 0 reviews	If your stock parts are working, you'd be in trouble.....you'd be in the twighlight zone.

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