Water neck leaks and Isn't being nice

[AmadeusCharger500]

I found it seeping at the connection between the water neck and the block. Replaced it with a new gasket and permatex. Now it leaks worse!

any good ideas to fix this permanent so Im not embarassed and worried driving it!?

[68coronetGLwannabe]

Are you running a stock thermostat housing (neck) or a chrome one? I had a chrome one and could never get it to seal properly so i replaced it with a stock one and no more problems. I think I used Permatex "Right stuff" to seal it.

[FLG]

Pull it off, if its pitted grab some sand paper and sand it flat (no need for perfection just get out what ya could) a gasket and "right stuff" will seal that puppy right up. Make sure you let it set up overnight before final torquing.

[62 Max]

Most are warped,run it on a belt sander.Here is before and after.Shows how bad they can be.

[AmadeusCharger500]

Chrome neck and a 190 t-stat. I'll try to get a stock unit and use the "Right Stuff"!

[Mick70RR]

I had a chrome water neck that leaked, checked it out and it had warped. Filed it flat again and it was fine for a few months then started leaking again. I did this several times until I gave up and bought a billet aluminium water neck. Never leaked since the day I fitted it.

[adauto]

I also had a chrome neck... filed it flat. It lasted till next season then started seeping again. Replaced with stack and its all good!

[charger2fast4u]

since we are on water necks is the 440 source billet aluminum one any good? anyone have any problems with it? does it warp or is the inside diameter hole smaller then the stock one and cause restriced flow? where did you's get your billet aluminum ones from?

[Troy]

Man, leaking chrome water necks have been an issue since the site prior to the last site - that's since 2001! The best advice is to not use one.

Troy

[Al]

I replaced my stock water neck with a chrome one from Mopar. Installed it with RTV and let it dry for a day before filling in the anti-freeze. No problems so far.

[Long Island RT]

since we are on water necks is the 440 source billet aluminum one any good? anyone have any problems with it? does it warp or is the inside diameter hole smaller then the stock one and cause restriced flow? where did you's get your billet aluminum ones from?

Yes - I have the 440 source one.  No overheating issues, and no warping - but I only have about 500 miles on it.

[adauto]

i think the more heat cycles they go thru the worse they get,... just a therory

[62 Max]

I've seen them on cars for years and never leaked a drop.Seems the leaking starts after they have been removed a few times.This one has been on since 1992.

[charger2fast4u]

Yes - I have the 440 source one.  No overheating issues, and no warping - but I only have about 500 miles on it.
[/quote]

Before you installed it did you happen to do a size comparison with a stock one? Asking because I know there water pump housings have smaller ports then anyone else's and was wondering if the necks are smaller to

[Purple68]

The billet one I have from 440 source had to have the bolt holes enlarged as they didn't match the MP housing. Also mine has seeped a little too, but it looks nice.

[BigBlockSam]

Installed it with RTV

me too . chrome housing no problems and it's been several years

[Long Island RT]

Yes - I have the 440 source one.  No overheating issues, and no warping - but I only have about 500 miles on it.

Before you installed it did you happen to do a size comparison with a stock one? Asking because I know there water pump housings have smaller ports then anyone else's and was wondering if the necks are smaller to
[/quote]

I don't have their water pump - I have a motor home water pump.  No problems with fitment or flow.  512 stroker with 11:1 compression idles in 90° weather at 200°.  Mechanical fan - no shroud.  Champion 3-row aluminum radiator.

[charger2fast4u]

Thanks for the reply Long Island RT sounds like you got a good engine setup ill be building one similar

[Al]

Just to keep this updated:

After a year of use my chrome water neck from Mopar leaks real bad. When taking it off I noticed it is seriously warped. The cast iron original one is straight even after years of use.

Al

[BrianShaughnessy]

Just to keep this updated:

After a year of use my chrome water neck from Mopar leaks real bad. When taking it off I noticed it is seriously warped. The cast iron original one is straight even after years of use.

Al

After 6 or 7 years my Weldtech Stainless water neck is still leak free...   too bad the price went up so much since I bought it.   http://weldtechstainless.com/

I tossed the _______ brand chrome water neck shortly after I put the car on the road for the stainless job.   That was after I had sanded it smooth several times.   

My advice is get a cast iron stocker,  a billet aluminum,  or the polished stainless....  anything but a parts store chrome piece.

[Al]

Just to keep this updated:

After a year of use my chrome water neck from Mopar leaks real bad. When taking it off I noticed it is seriously warped. The cast iron original one is straight even after years of use.

Al

After 6 or 7 years my Weldtech Stainless water neck is still leak free...   too bad the price went up so much since I bought it.   http://weldtechstainless.com/

I tossed the _______ brand chrome water neck shortly after I put the car on the road for the stainless job.   That was after I had sanded it smooth several times.   

My advice is get a cast iron stocker,  a billet aluminum,  or the polished stainless....  anything but a parts store chrome piece.

That's what I installed right now.