thermostat housing nipple broke - ZR-1 Net Registry Forums

rikker · 10-20-2013

while cleaning and setting up for w pump install I noticed seapage around top of threaded hose with the disconnect on it so I grabbed it and it became disconnected (broke) in my hand,if I cant get this out anyone know my options if theye don't make them anymore???????

Dynomite · 10-20-2013

Quote:

Originally Posted by rikker

while cleaning and setting up for w pump install I noticed seapage around top of threaded hose with the disconnect on it so I grabbed it and it became disconnected (broke) in my hand,if I cant get this out anyone know my options if theye don't make them anymore???????

Nipple Heater Coolant Return

Jerry says The original part was cast from pot metal which corroded and was easily broken off in the thermostat housing.

If you are talking this

WVZR-1 · 10-20-2013

It would be very wise if "all" owners actually checked that fitting when doing maintenance or if you don't remember ever checking, do it! The early production fitting was used in most GM's of the time and the material actually swelled and became fatigued. It wasn't uncommon to have these fail on any GM that used them.

I don't know how you would remove the threaded aspect of the nipple in the ZR-1 short of removing the t-stat housing and doing it on the bench. I've never needed to so.

Jerry of course has them but if you were in dire need it should be "on the shelf" at most GM dealers, ACD jobbers and most auto parts stores. The service part is certainly the more desired product!

If you can't get a 1 1/16 (27mm) end wrench on it you need to be concerned. The OE is only similar to Cliff's image but Cliff's is what the later "service part" would appear as.

rikker · 10-20-2013

THATS IT!!!!!! very brittle however I have everything apart may as well pull the housing out and see if I can get the leftover out,Im sure by its weakness it would have let go.

Schrade · 10-20-2013

Can you get some snappics posted, to see what you've got going on there?

10-20-2013	#1
rikker Join Date: Oct 2013 Location: old lyme ct Posts: 33	thermostat housing nipple broke while cleaning and setting up for w pump install I noticed seapage around top of threaded hose with the disconnect on it so I grabbed it and it became disconnected (broke) in my hand,if I cant get this out anyone know my options if theye don't make them anymore???????

10-20-2013	#3
WVZR-1 Join Date: Oct 2004 Posts: 1,890	Re: thermostat housing nipple broke It would be very wise if "all" owners actually checked that fitting when doing maintenance or if you don't remember ever checking, do it! The early production fitting was used in most GM's of the time and the material actually swelled and became fatigued. It wasn't uncommon to have these fail on any GM that used them. I don't know how you would remove the threaded aspect of the nipple in the ZR-1 short of removing the t-stat housing and doing it on the bench. I've never needed to so. Jerry of course has them but if you were in dire need it should be "on the shelf" at most GM dealers, ACD jobbers and most auto parts stores. The service part is certainly the more desired product! If you can't get a 1 1/16 (27mm) end wrench on it you need to be concerned. The OE is only similar to Cliff's image but Cliff's is what the later "service part" would appear as. Last edited by WVZR-1; 10-20-2013 at 08:10 PM.

10-20-2013	#4
rikker Join Date: Oct 2013 Location: old lyme ct Posts: 33	Re: thermostat housing nipple broke THATS IT!!!!!! very brittle however I have everything apart may as well pull the housing out and see if I can get the leftover out,Im sure by its weakness it would have let go.

10-20-2013	#5
Schrade Join Date: Dec 2012 Location: NC Posts: 1,786	Re: thermostat housing nipple broke Can you get some snappics posted, to see what you've got going on there? __________________ I'm getting my snappics / threads removed blindly as fast as I can, to get in compliance with copyright / license TOS on the boards here (lots of FSM pages and other copyright / license violations on my part; sorry guys). And thanks to all the guys who didn't whine when I posted those FSM copyrighted / licensed stuff in my threads... ( :thumbsup: [b]and to think I complied with a mod's request to delete a pic of him in a Challenge Car in NCM Museum, so he wouldn't get in hot water)[/b] Thanks to several guys here for sending parts FREE; BearlyFlying, WeGone, Geezer, GoldCylon, and more there, TonyD, mike100, fletchusmc... 1990 #2794; 4L60e Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless, Power Effects 3" [IMG]https://lh5.googleusercontent.com/-GHpfzty7DVU/UQn-0Ru2xAI/AAAAAAAAA14/08mz1p4QLD4/s445/Screenshot-5.png[/IMG]