Replacing coolant hoses,have a few question. - ZR-1 Net Registry Forums

Z51JEFF · 10-27-2014

I want to replace the hoses but dont want to run into any complications.Before I jump into this are there any hidden surprises I should expect,any one hose going to give me a hard time?Im going to get a pair of the hose clamp pliers to make the job easier.Thanks.

Scrrem · 10-27-2014

Quote:

Originally Posted by Z51JEFF

I want to replace the hoses but dont want to run into any complications.Before I jump into this are there any hidden surprises I should expect,any one hose going to give me a hard time?Im going to get a pair of the hose clamp pliers to make the job easier.Thanks.

Yes, If you have the GM spring hose clamp, the clamp tool will make the job so much eaiser. The only hose the could give you an issue is the small straight host going from the thermostat housing to the radiator. When I did mine, my plan was to repace the thermostat anyway so I had to take housing apart and this makes replacing that hose a snap. After performing this, I really didn't see anyway to repace the hose without doing this. Getting the thermostat to stay in place while getting the housing put back together is a bit of a pain. You need to be careful you don't pinch the thermostat gasket when bolting everything back up. Using two putty knives to hold the thermostat in place works well.
Rich

GOLDCYLON · 10-27-2014

Agree the short hose is the biggest PITA. If your upgrading to silicone hoses the stainless worm gear style hose clamps are the WTG as they dont tear up the hoses.

8cam · 10-27-2014

The short thermostat hose is definitely a pain (I know it was out of necessity, but what a design kludge), but also the lower hose to the water pump. For me that one was a mighty struggle, very tough to get back on the pump with any kind of leverage if you still have the radiator and condenser in place. If I had to do it over again I'd pull the radiator and a/c plumbing just to get some additional room.

Z51JEFF · 10-27-2014

Is there any tricks to removing the thermostat housing?Ill remove the radiator if it makes the job easier.

Dynomite · 10-27-2014

Quote:

Originally Posted by Z51JEFF

Is there any tricks to removing the thermostat housing?Ill remove the radiator if it makes the job easier.

I would not go that far

Getting the old hoses off is usually the worst ......have a razor blade handy to cut the hose length wise over the coupler.

Getting the thermostat gasket to stay into position is most difficult....follow the advice of Scrrem above using a putty knife

I use a bit of permatex gasket sealant just inside the new hoses before slipping them onto the couplers.

10-27-2014	#1
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,049	Replacing coolant hoses,have a few question. I want to replace the hoses but dont want to run into any complications.Before I jump into this are there any hidden surprises I should expect,any one hose going to give me a hard time?Im going to get a pair of the hose clamp pliers to make the job easier.Thanks.

10-27-2014	#3
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: Replacing coolant hoses,have a few question. Agree the short hose is the biggest PITA. If your upgrading to silicone hoses the stainless worm gear style hose clamps are the WTG as they dont tear up the hoses. __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

10-27-2014	#4
8cam Join Date: Jul 2013 Location: Atlanta Posts: 451	Re: Replacing coolant hoses,have a few question. The short thermostat hose is definitely a pain (I know it was out of necessity, but what a design kludge), but also the lower hose to the water pump. For me that one was a mighty struggle, very tough to get back on the pump with any kind of leverage if you still have the radiator and condenser in place. If I had to do it over again I'd pull the radiator and a/c plumbing just to get some additional room. __________________ Mark '90 ZR-1 #1322 Daily Driver, 64k and counting Black/Gray [IMG]http://i208.photobucket.com/albums/bb49/mlitherland/IMG_0326_zps3d50d8cb.jpg[/IMG]

10-27-2014	#5
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,049	Re: Replacing coolant hoses,have a few question. Is there any tricks to removing the thermostat housing?Ill remove the radiator if it makes the job easier.