North American Turbocoupe Organization



heater core pressures
mmedic50 Offline
Senior Member
#1
I had read somewhere that the reason the TC heater core leaks so much is because of the pressure of the coolant when under boost, multiplied by the number of years its been beat on. I also read somewhere about a "restricter" that could be placed in the coolant inlet line to the heater core. Anybody else heard of this or have any input? Getting ready to change mine, now that is cooled down enough to work outside and really don't want to have to do it again any time soon. Thanks------- Michael
1988 TC 5 speed, Dark Blue
Build date 5/88.
140 mph Ford Motorsport Speedometer
Tripminder
Walbro 255 Fuel Pump
Kirban Adj. Fuel Pressure Regulator
K&N Air Filter
Gillis Boost Control Valve
New rebuild- .030 over pistons.
SS valves(1.89/1.59).
Center Force Stage II clutch.
ARP head studs.
Crane roller cam .450 lift.
Gutted upper and ported lower intake.
Ceramic coated and ported E6 exhaust.
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Turboman~87 Offline
Member
#2
You can put an H in the line so when you rev it up and it is pumping hard it will go right back to the radiator instead of the heater core. My brothers heater core is blown and he is planning to put an H in the line when he replaces it. He just has it bypassed right now. He isn't looking forward to it!! [Image: biggrin.gif] Aparrently older muscle cars had an H in the line to prevent it. Hope this helps!

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Turboman~87
Neil Van Pelt
[email protected]
Turboman~87
Neil Van Pelt

1995 Lincoln Mark VIII (stock)

1988 Silver Turbocoupe
Just went through engine swap with a wrecked 1987 Turbocoupe. Going to become a street legal racecar to tinker with. Have a T3 waiting to go in when I get everything ironed out.
-homemade boost controller
-all options except for Sunroof and Leather
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GT350R Offline
Senior Member
#3
There is or was a coolant restrictor that went on the inlet line also.Alot of these are discarded when the hose is replaced. I have heard a socket shoved in the hose works good also.
GT350R
(sold Sad ) 87 5speed, Motorsport head, [email protected]+2, [email protected], gutted or ported everything & all the typical junk.
84 Gt350 2.3T T-top
84 Turbo GT 418rwhp

My Garage
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mmedic50 Offline
Senior Member
#4
Is a "H" pipe something that you can buy or do you have to have it made?
1988 TC 5 speed, Dark Blue
Build date 5/88.
140 mph Ford Motorsport Speedometer
Tripminder
Walbro 255 Fuel Pump
Kirban Adj. Fuel Pressure Regulator
K&N Air Filter
Gillis Boost Control Valve
New rebuild- .030 over pistons.
SS valves(1.89/1.59).
Center Force Stage II clutch.
ARP head studs.
Crane roller cam .450 lift.
Gutted upper and ported lower intake.
Ceramic coated and ported E6 exhaust.
Reply

Turboman~87 Offline
Member
#5
I think it would be a custom fabrication thing. I am assuming so as I have not seen one personally that you buy some copper T's, a piece of rubber hose the same size as the ones right where the water goes into the firewall, and some hose clamps. I would then splice the lines and put in the two T's, and the cross member. If you didn't want to splice those lines you might be able to take them out and put in some new hoses but I am not sure whether they disconnect very close to the firewall. I know they do right at it but I am not sure if they do on the radiator side. I hope this helps. Like I said my brother is planning on doing it when he replaces his heater core as it is just bypassed as of now.


------------------
Turboman~87
Neil Van Pelt
[email protected]
Turboman~87
Neil Van Pelt

1995 Lincoln Mark VIII (stock)

1988 Silver Turbocoupe
Just went through engine swap with a wrecked 1987 Turbocoupe. Going to become a street legal racecar to tinker with. Have a T3 waiting to go in when I get everything ironed out.
-homemade boost controller
-all options except for Sunroof and Leather
Reply

Jeff K Online
Administrator
#6
Just use a restrictor in the inlet. You can get an offical Ford one for about $20 from PPI ( www.mustangparts.com ), or just jam a brass nut or a socket in the inlet line. My 86 Tbird 5.0 came with a restrictor in the inlet line, and I am STILL on my original heater core after nearly 16 years of use!!! BTW, pressure in the cooling system has nothing to do with boost press.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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