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I need a water neck that won't leak #1719574
01/01/15 09:16 PM
01/01/15 09:16 PM
Joined: May 2003
Posts: 2,117
Cleveland Ohio
10secGTX Offline OP
top fuel
10secGTX  Offline OP
top fuel

Joined: May 2003
Posts: 2,117
Cleveland Ohio
I have the Aluminum pump and housing and the chrome neck, the damn thing leaks no matter what...any ideas or help ?

Re: I need a water neck that won't leak [Re: 10secGTX] #1719575
01/01/15 09:23 PM
01/01/15 09:23 PM
Joined: Jan 2003
Posts: 32,923
Grand Prairie,Texas
stumpy Offline
I Win
stumpy  Offline
I Win

Joined: Jan 2003
Posts: 32,923
Grand Prairie,Texas
Throw the chrome away, they are leakers, and get a new stock style neck. If you sand the chrome off flat and use sealer you may get it to stop leaking but it's a pain in the tail parts with no guarantee.

Re: I need a water neck that won't leak [Re: stumpy] #1719576
01/01/15 09:28 PM
01/01/15 09:28 PM
Joined: Jan 2003
Posts: 15,311
Omaha Ne
T
TJP Offline
I Live Here
TJP  Offline
I Live Here
T

Joined: Jan 2003
Posts: 15,311
Omaha Ne
Quote:

Throw the chrome away, they are leakers, and get a new stock style neck.





only other option is to ante up for a billet one

Re: I need a water neck that won't leak [Re: TJP] #1719577
01/01/15 09:49 PM
01/01/15 09:49 PM
Joined: Apr 2007
Posts: 2,915
Calgary, Alberta Canada
a12rag Offline
master
a12rag  Offline
master

Joined: Apr 2007
Posts: 2,915
Calgary, Alberta Canada
I know that this isn't a cheap solution . . . BUT - it WORKS !!! O ring seal !! Just need to use the 80's & up smaller size thermostat :

http://www.terrysautolab.com/

Well worth the money in my book !! No seepage, no leak . . . engine paint looks great !!!

Just my two cents worth . . .

Cheers,

Mark

Re: I need a water neck that won't leak [Re: a12rag] #1719578
01/01/15 10:39 PM
01/01/15 10:39 PM
Joined: Dec 2013
Posts: 4,669
Wichita
G
GY3 Offline
master
GY3  Offline
master
G

Joined: Dec 2013
Posts: 4,669
Wichita
440source billet aluminum!

Re: I need a water neck that won't leak [Re: 10secGTX] #1719579
01/01/15 10:45 PM
01/01/15 10:45 PM
Joined: Dec 2004
Posts: 10,552
Rittman Ohio
fourgearsavoy Offline
I Live Here
fourgearsavoy  Offline
I Live Here

Joined: Dec 2004
Posts: 10,552
Rittman Ohio
Fran I have a billet one from Mancini on my car and a Superformance gasket from Greg He also makes a gasket that will seal the leaky chrome ones once you make sure it's flat
Gus

8381537-moriaburnout.JPG (86 downloads)

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: I need a water neck that won't leak [Re: 10secGTX] #1719580
01/01/15 10:54 PM
01/01/15 10:54 PM
Joined: Jan 2003
Posts: 5,439
So Cal
Sinitro Offline
master
Sinitro  Offline
master

Joined: Jan 2003
Posts: 5,439
So Cal
The chrome one is a POS...
Made in China, never seals even when sanded smoothly, double gaskets..
U can spend the $ for a better billet one from Mancini...
Or go to Napa for this cast OE type for about $6.....
Part # BK 6051051
See the attachment..


Just my $0.02...

8381558-NWMDC.jpeg (209 downloads)
Re: I need a water neck that won't leak [Re: 10secGTX] #1719581
01/01/15 10:59 PM
01/01/15 10:59 PM
Joined: Dec 2004
Posts: 2,703
Mohnton, Pa
DodgeCharger Offline
master
DodgeCharger  Offline
master

Joined: Dec 2004
Posts: 2,703
Mohnton, Pa
How are you sealing it? I had this problem and I was using a gasket and clear silicon. My engine builder told me to throw away the gasket and just use good clear silicon. Allow it time to cure. I left it a day. The water neck hasn't leaked since. It's been 8 years.

Re: I need a water neck that won't leak [Re: 10secGTX] #1719582
01/01/15 11:05 PM
01/01/15 11:05 PM
Joined: Apr 2012
Posts: 18,880
-
R
RSNOMO Offline
Moparts Torchbearer
RSNOMO  Offline
Moparts Torchbearer
R

Joined: Apr 2012
Posts: 18,880
-
Got an OEM thermo housing...

A gasket and some high-tack...

Been sealed for many years...

Re: I need a water neck that won't leak [Re: 10secGTX] #1719583
01/01/15 11:15 PM
01/01/15 11:15 PM
Joined: Jan 2003
Posts: 3,719
Space Station #5
471Magnum Offline
master
471Magnum  Offline
master

Joined: Jan 2003
Posts: 3,719
Space Station #5
Aluminum OEM type housings are like $6 from most discount auto parts stores. I think the last one I got was from O'Reilly. Worked just fine.


-Jim

I can fix it... my old man is a television repairman.
He's got the ultimate set of tools... I can fix it.

Currently Mopar-less
Re: I need a water neck that won't leak [Re: 10secGTX] #1719584
01/01/15 11:26 PM
01/01/15 11:26 PM
Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
@
@#$%&*! Offline
New user name, Same old jerk!
@#$%&*!  Offline
New user name, Same old jerk!
@

Joined: May 2008
Posts: 1,131
Thigh-Gap Junction
Quote:

I have the Aluminum pump and housing and the chrome neck, the damn thing leaks no matter what...any ideas or help ?





I've always had good success just sanding both surfaces flat and sealing with silicone. No cleaners or solvents, just a sanded surface and a thin coat of silicone on each part. Let it set up a few minutes if you want. I think the cheap paper gaskets seep water.

Re: I need a water neck that won't leak [Re: @#$%&*!] #1719585
01/02/15 12:31 AM
01/02/15 12:31 AM
Joined: May 2003
Posts: 2,117
Cleveland Ohio
10secGTX Offline OP
top fuel
10secGTX  Offline OP
top fuel

Joined: May 2003
Posts: 2,117
Cleveland Ohio
I ordered the Mancini billet ..thanks

Re: I need a water neck that won't leak [Re: 10secGTX] #1719586
01/02/15 02:01 AM
01/02/15 02:01 AM
Joined: Mar 2003
Posts: 5,193
NEW JERSEY
AARCONV Offline
master
AARCONV  Offline
master

Joined: Mar 2003
Posts: 5,193
NEW JERSEY
napa

Re: I need a water neck that won't leak [Re: 10secGTX] #1719587
01/02/15 11:18 AM
01/02/15 11:18 AM
Joined: Jun 2005
Posts: 531
Virginia
RM21N0A Offline
mopar
RM21N0A  Offline
mopar

Joined: Jun 2005
Posts: 531
Virginia
I believe that pretty much any type EXCEPT the chrome ones will easily seal.
Years ago before I heard about all the problems with them, I got a chrome Mopar Performance neck through the local Dodge dealer.
Tried everything - double gaskets, homemade gaskets, washers for the bolts, different torque values - no joy.
You can actually see the curve in the mounting surface after installing/removing.
They are just made with very soft metal and distort very easily.

Re: I need a water neck that won't leak [Re: 10secGTX] #1719588
01/02/15 01:41 PM
01/02/15 01:41 PM
Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
roadhazard Offline
master
roadhazard  Offline
master

Joined: Apr 2006
Posts: 3,675
Akron, Ohio U.S.A.
Quote:

I ordered the Mancini billet ..thanks





Now all you need is a quality gasket

8382357-#1022.JPG (211 downloads)
Re: I need a water neck that won't leak [Re: roadhazard] #1719589
01/02/15 04:21 PM
01/02/15 04:21 PM
Joined: Jan 2003
Posts: 5,891
Athens, Greece
Pyper70 Offline
master
Pyper70  Offline
master

Joined: Jan 2003
Posts: 5,891
Athens, Greece
I took the cheapo chrome one from Mancini and put it on a belt sander and cut some of the material off nice and straight. Then used a cheapo FelPro Gasket with some FelPro Indian Head Gasket Shellac....no problems whatsoever


Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
Re: I need a water neck that won't leak [Re: @#$%&*!] #1719590
01/02/15 05:23 PM
01/02/15 05:23 PM
Joined: Jan 2004
Posts: 755
Tempe, AZ
L
loco340cuda Offline
super stock
loco340cuda  Offline
super stock
L

Joined: Jan 2004
Posts: 755
Tempe, AZ
Quote:




I've always had good success just sanding both surfaces flat and sealing with silicone. No cleaners or solvents, just a sanded surface and a thin coat of silicone on each part. Let it set up a few minutes if you want.
Quote:



I have done this as well and had good luck with it.


70 Cuda 340 4 speed - now stroked to 416ci (SOLD)
2017 Mustang Shelby GT350
Re: I need a water neck that won't leak [Re: RM21N0A] #1719591
01/02/15 06:48 PM
01/02/15 06:48 PM
Joined: Jan 2003
Posts: 5,439
So Cal
Sinitro Offline
master
Sinitro  Offline
master

Joined: Jan 2003
Posts: 5,439
So Cal
Quote:

I believe that pretty much any type EXCEPT the chrome ones will easily seal.
Years ago before I heard about all the problems with them, I got a chrome Mopar Performance neck through the local Dodge dealer.
Tried everything - double gaskets, homemade gaskets, washers for the bolts, different torque values - no joy.
You can actually see the curve in the mounting surface after installing/removing.
They are just made with very soft metal and distort very easily.




Exactly...
The chrome one has a thick base and distorts when hot...
Made in China out of recycled Coors cans, Mopar, Summit, Jegs, PAW and many auto stores including Oreily sold them..
I tried all the mentioned things...
Higher torque down
Sanding its base
Double gasket
No gasket w/RTV
High temp sealant

IMHO...
The root issue, is its material simply distorts after getting hot. Got the Napa one, installed new gasket, torqued it down...
No leaks 3 years later..

Just my $0.02...







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