North American Turbocoupe Organization



Aluminum Thermostat Housings
Gary S Offline
Administrator
#1
I have one of those nice machined aluminum thermostat housings for my car which I would really like to put one. However, here is my dilemma..........the heater hose outlet off the housing is tapped for a 1/2 inch heater hose outlet. The heater hose outlet that came with it is for a 1/2 hose. I don't feel real comfortable putting a 5/8 inch heater hose on a 1/2 inch fitting and trying to keep it from leaking by tightening down the hose clamps real tight. I would much prefer using a 5/8 inch heater hose outlet. Problem is that there is not enough "meat" in the housing to take the threaded hole out for a 5/8 inch thread. I was hoping that someone knew where one could purchase a heater hose outlet that has 1/2 threads to screw into the 1/2 inch hole in the housing and then have a 5/8 inch outlet on top to attach the heater hose to. If anybody knows a place where one can go to find such a fitting please let me know. I am stymied right now.
Thanks,
Gary Schweikert

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NATO Member
1987 Turbocoupe
150,000 Miles
5 Speed
Black w/Raven Interior
Gillis Valve
3" Downpipe
Dynomax Super Turbo Mufflers w/2 1/2" exhaust
Centerforce I Clutch and Pressure Plate
Polished upper intake, lower intake, throttle body, front of turbo, water pump, tensioner pulleys, IAC, EGR, fuel rail. Chromed valve cover, top radiator cover, radiator brackets, alternator, air filter top, top of fan support, wheel centers, intercooler and bracket (all courtesy of Dan Eaves Polishing Services, Tuff Stuff Performance, and J&P Plating)
Soon To Come: Chromed Snowflakes http://www.turbotbird.com//showroom/gs_87tc.htm

2003 Mustang'
1997 Toyota Camry
1993 Nissan 240SX
1993 Taurus SW

[This message has been edited by Gary S (edited 03-24-2004).]
NATO Member
1987 Turbocoupe
168,000 Miles
5 Speed
Black w/Raven Interior
http://www.turbotbird.com/showroom/data_...t_87tc.php
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Jeff K Offline
Administrator
#2
Gary.... here is what I did: I took a 2 to 3 inch long piece of smaller dia. hose that fit on the small brass heater hose outlet but was 5/8" OD, and then put the stock 5/8" ID hose over the smaller hose, and clamped it. Been on the car that way for 1 1/2 to 2 years now, and is leak free. I dont remember the exact small hose thatI used..... just a piece of some hose I found in my junk box.... like a piece of tranny cooler hose or something like that.

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Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 21 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 // 02 Taurus Vulcan(wifes car)
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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philS Offline
Senior Member
#3
Jeff's idea is a good one.

Otherwise you'll never get a 5/8 ID hose to clamp down tight over a 1/4 OD outlet.

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86 TC, 73 Mini, 64 Mini Van RWD project, SVT Focus
Click here to beat a ricer.
Did you hear about the Lucas powered torpedo? It sank.

86 TC, 73 Mini, 64 Mini Van, Saturn wagon
Click here to beat a ricer.
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PetzJC Offline
Senior Member
#4
Any reputable plumbing/hardware store will have brass hose-barb reducers. You may have to search for a 5/8" to 1/4" reducer.

Or, if the housing is tapped, use a 1/4" to 1/2" brass pipe-thread fitting and then use a 5/8" hose-barb to 1/2" pipe-thread adapter/fitting.

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88 Silver T/C, original owner, 251,000 miles
Loaded except leather & auto trans
K&N, Gillis, SVO roller #1, big SS valves, ported intake, head, & exhaust
Polyurethane bushings throughout, GT-HR 235/55R16's
Former owner of 88 Silver T/C, loaded (except leather & A/T), original owner, 294,815 miles!!!
K&N, Gillis(18 psi), SVO roller #1, big SS valves, ported intake, head, & exhaust.
Short block & turbo original/untouched, spec-II/III clutch combo.
Polyurethane bushings throughout, Goodyear GT-HR 235/55R16
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Gary S Offline
Administrator
#5
Ok, stupid me. Just measured the hole in the thermostat housing and its 1/2 inch, not a quarter. So now it becomes 1/2 inch to 5/8 inch. That may be easier to get or if nothing turns up, I do what Jeff suggested.
Thanks Everyone,
Gary
NATO Member
1987 Turbocoupe
168,000 Miles
5 Speed
Black w/Raven Interior
http://www.turbotbird.com/showroom/data_...t_87tc.php
Reply

Pete D Offline
Administrator
#6
I got a 90* plastic fitting, at NAPA I think, that is 5/8 on one end and 1/2 on the other and then used the appropriate hose on each end
Pete Dunham


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