heater hoses on '87-93 GT's

82 GT · 10-23-2002, 06:44 PM

Tonight I noticed that my one heater core hose on my '88GT is leaking slightly. Those hoses are small in length but have some nasty bends in them. Do they sell them pre-formed or will standard hose from a roll work?

srv1 · 10-23-2002, 07:07 PM

Quote:

Originally posted by 82 GT
Tonight I noticed that my one heater core hose on my '88GT is leaking slightly. Those hoses are small in length but have some nasty bends in them. Do they sell them pre-formed or will standard hose from a roll work?

yes they sell the preformed. no, the roll of 5/8 heater hose wont work cause of the nasty bends. it will kink.

Chevyguy · 10-24-2002, 03:53 PM

Do yourself a favor, order a set of all 4 hoses from Ford. They probably won't have them in stock but worth the wait. The aftermarket ones have pretty generic bends and still looked a little kinky to me. Also be gentle with the ends of the heater core, if they get yanked on too much don't be suprized by a puddle of antifreeze inside the car. Check your larger inlet hose for the restrictor too, if it's there cut it out and stuff it in the new hose.

82 GT · 10-25-2002, 10:04 PM

Quote:

Originally posted by Chevyguy
Also be gentle with the ends of the heater core, if they get yanked on too much don't be suprized by a puddle of antifreeze inside the car. Check your larger inlet hose for the restrictor too, if it's there cut it out and stuff it in the new hose.

If that happens does that mean the core is ruined then?

moc · 10-25-2002, 10:43 PM

what you want to do is be gentle when you remove the old hoses,you want to take a straight edge blade to the hoses where they back up to the firewall ,and slit them ,so as removal is very easy .You don't want to be yanking on it (the intake and exhaust tubes of the heater core ) be gentle ... Also when you put the preformed hoses back on put some dishwashing lotion on the inside of them (sparingly) for ease of sliding them on (gently) also ,,intake side should have a restrictor inside of the hose! This backwashes the pressure (so as no to destroy your heater core under pressure) see if the have police heater core hoses ,if not there are a verity if the hose you buy does not have it .. like a small socket that you don't need any more ,or a fat washer that will slide into the hose (you only want to restrict the true diamerter a bit ) this is why many mustang owners replace their M/F heater core ,cause they don't restrict the intake hose !! Anyway take your time do it right ,think about it ,and set it up trial wise before ,go easy again on those tubes ,and make shure you have new hose clamps ,and a 8 to 10 " common screw driver to get the clamps from the side (firewall) good luck ,Michael

moc · 10-25-2002, 10:50 PM

Intake tube ,is the one closest to the passenger side of the stang (just in case you did not no this )

82 GT · 10-26-2002, 01:32 PM

I got the hoses on today. What a pain in the ***!!
Moc I did what you said about slitting the hoses at the ends and that was much easier. There isn't much space back there either. I replaced both hoses while I was back there and I didn't forget the restricter either.
The one tube on the heater core had a lot of "play". Is that ok?
I warmed the car up to temp and turned on the heat and didn't notice any leaks inside or outside so I guess I'm ok then.

moc · 10-26-2002, 04:47 PM

yea it's okay ,with the play ! depending on who made the hoses that week

yes they are a pain ,but now your in the clear for the winter

take it easy

10-23-2002, 06:44 PM	#1
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	heater hoses on '87-93 GT's Tonight I noticed that my one heater core hose on my '88GT is leaking slightly. Those hoses are small in length but have some nasty bends in them. Do they sell them pre-formed or will standard hose from a roll work? __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

10-24-2002, 03:53 PM	#3
Chevyguy Backyard Mechanic/Chemist Join Date: Feb 2001 Location: Acton MA USA Posts: 435	Do yourself a favor, order a set of all 4 hoses from Ford. They probably won't have them in stock but worth the wait. The aftermarket ones have pretty generic bends and still looked a little kinky to me. Also be gentle with the ends of the heater core, if they get yanked on too much don't be suprized by a puddle of antifreeze inside the car. Check your larger inlet hose for the restrictor too, if it's there cut it out and stuff it in the new hose. __________________ 2001 Crown Vic Maurader Airbox/MAF, DR chip Edel IAS shocks Single exhaust :wtf: 93 P-71 Vic interceptor Backup car now 90 5.0 LX Notch SOLD 74 Chevy Laguna type S-3 454 under construction Currently apart undergoing bodywork.

10-25-2002, 10:43 PM	#5
moc Registered Member Join Date: Mar 1999 Location: Ocean City , Maryland Posts: 344	Yes what you want to do is be gentle when you remove the old hoses,you want to take a straight edge blade to the hoses where they back up to the firewall ,and slit them ,so as removal is very easy .You don't want to be yanking on it (the intake and exhaust tubes of the heater core ) be gentle ... Also when you put the preformed hoses back on put some dishwashing lotion on the inside of them (sparingly) for ease of sliding them on (gently) also ,,intake side should have a restrictor inside of the hose! This backwashes the pressure (so as no to destroy your heater core under pressure) see if the have police heater core hoses ,if not there are a verity if the hose you buy does not have it .. like a small socket that you don't need any more ,or a fat washer that will slide into the hose (you only want to restrict the true diamerter a bit ) this is why many mustang owners replace their M/F heater core ,cause they don't restrict the intake hose !! Anyway take your time do it right ,think about it ,and set it up trial wise before ,go easy again on those tubes ,and make shure you have new hose clamps ,and a 8 to 10 " common screw driver to get the clamps from the side (firewall) good luck ,Michael __________________ 1991 5.0 NotchBack,Black as of 05/04/09 34,300mi. 2001 LIGHTNING Black 29,872 mi. 05/04/09 (Hangar Queen) SMOKEM UP

10-25-2002, 10:50 PM	#6
moc Registered Member Join Date: Mar 1999 Location: Ocean City , Maryland Posts: 344	I forgot Intake tube ,is the one closest to the passenger side of the stang (just in case you did not no this ) __________________ 1991 5.0 NotchBack,Black as of 05/04/09 34,300mi. 2001 LIGHTNING Black 29,872 mi. 05/04/09 (Hangar Queen) SMOKEM UP

10-26-2002, 01:32 PM	#7
82 GT Import Slayer Join Date: May 1999 Posts: 2,241	I got the hoses on today. What a pain in the *!! Moc** I did what you said about slitting the hoses at the ends and that was much easier. There isn't much space back there either. I replaced both hoses while I was back there and I didn't forget the restricter either. The one tube on the heater core had a lot of "play". Is that ok? I warmed the car up to temp and turned on the heat and didn't notice any leaks inside or outside so I guess I'm ok then. __________________ '82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.

10-26-2002, 04:47 PM	#8
moc Registered Member Join Date: Mar 1999 Location: Ocean City , Maryland Posts: 344	Good Job yea it's okay ,with the play ! depending on who made the hoses that week yes they are a pain ,but now your in the clear for the winter take it easy __________________ 1991 5.0 NotchBack,Black as of 05/04/09 34,300mi. 2001 LIGHTNING Black 29,872 mi. 05/04/09 (Hangar Queen) SMOKEM UP

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