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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

water pump wont stay sealed

  • Thread starter Thread starter DemonGT
  • Start date Start date Jun 15, 2005

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jun 15, 2005
#1
  • Jun 15, 2005
  • #1
i blew out the water pump gasket for the forth time....im junking the pump and geting a new one....but i was wondering if anyone has thought of or tryed JB welding the pump back plate right to the pump??
 

NosPony

New Member
Apr 2, 2004
278
0
0
Canton, Il
Jun 15, 2005
#2
  • Jun 15, 2005
  • #2
Is it leaking there or on the timing cover. I had a leak like you had. I couldnt get it to seal. Come to find out my timing cover was warped. I had my timing cover milled a bit and fine now. Just a thought
 

Joe P.

Founding Member
Aug 1, 2002
56
0
0
Syracuse
Jun 15, 2005
#3
  • Jun 15, 2005
  • #3
I had the same problem before, ended up using Permatex Ultrablack
to seal the back plate right to the pump. Has held up great, no leaks.
 

bryanrevans

New Member
Sep 10, 2004
296
0
0
Chicopee,Mass
Jun 15, 2005
#4
  • Jun 15, 2005
  • #4
I kept haveing this problem.Old timing cover matched up against NEW waterpump.I got rid of BLUE rtv for the better black rtv.Not too much tho just enough on both sides of gasket then wait till rtv get "tacky".I HAND tighten all bolts down.Wait till rtv sets up(1/2hour)then tork to specs. I swear 99% of these gasket,waterpump,thermostat leaks are from over tightening and pushing the rtv\gasket arround. MY take of course only!!!!
 

Grn92LX

Fidanza Man!
Founding Member
Jan 14, 2001
6,819
64
129
New York
Jun 15, 2005
#5
  • Jun 15, 2005
  • #5
I have heard quite a few guys saying they blow the gasket out with stewart pumps myself included. I blew it twice I think. Blew it at the track too which sucked! I'm no rookie either so i know I did it right and I used fel pro gaskets for the back plate and for the pump. I think i'm gonna buy one from autozone.
 
T

TheUser

Active Member
Jul 25, 2003
1,859
1
36
Springfield, MO
Jun 16, 2005
#6
  • Jun 16, 2005
  • #6
Just an idea, but I've had just as many leaking water pumps as anyone. I've probably changed the gasket 10 times in the past year. Anyway, I bought a new pump and tried it w/ the blue RTV, copper RTV, just gaskets with no RTV, Just RTV and no gaskets, leaked every time one way or another. I finally read on here that someone used some stuff called "The Right Stuff." and it worked.

I went to autozone and a thing of "the right stuff" is around $13, BUT, it did work and I haven't had any more leaks since installing it (knock on wood). I didn't use any gaskets or anything, just "The right stuff."
 

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jun 16, 2005
#7
  • Jun 16, 2005
  • #7
havnt even looked to see where it blew out yet..but every other time it was on the bottom between the pump and back plate...and i installed it like everyone else...black RTV both sides of fel pro gasket let set up a bit installed torqued..let set for awhile then retorqued ect...

two of the times its blown out is when iv been "geting on it" ...and im sure both times the thermo. was shut...but it shouldnt matter..iv got on it with my old stock motor with the thermo shut and i never had this happen..with stock pump ect.

timing chain cover and pump where both new when i built motor...both have only around 3-400 miles on them...

was just thinken...why cant i JB weld the plate to the pump...i cant think of any reason "I" would ever need to take it off....

so if i get a new pump and still have probs i dont know....
 
T

TheUser

Active Member
Jul 25, 2003
1,859
1
36
Springfield, MO
Jun 16, 2005
#8
  • Jun 16, 2005
  • #8
I guess you *could* JB weld the water pump to the timing cover - I can't see any problem w/ it as long as you get it all sealed properly, but if your pump ever goes out, you'll be replacing your timing cover along with it.
 

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jun 17, 2005
#9
  • Jun 17, 2005
  • #9
no no, you misunderstand..i mean JB weld the pump back plate to the PUMP..not the pump to TC cover...id still use a gasket ect. as you would normaly between plate and TC cover...

every gasket blow out iv had was on the bottom between those two small bolts that have the low profile head you install first..reason im thinken of jb welding the plate to the pump
 

DemonGT

Founding Member
May 24, 2002
871
51
49
Sparta,WI
Jul 19, 2006
#10
  • Jul 19, 2006
  • #10
i figured out my coolent leak problum and it was the hose that goes to the over flow up to the radiator nipple was pinched so it was creating pressure in the cooling system, so much frustration cause of something so simple

way back when i installed the new motor i riped the factory rubber overflow hose but it was towards the end so i just cut it shorter and streched it up to the radiator...not thinking about how it is so tight geting pulled downward its like its pinched and not leting enough coolent go to the over flow
 

rd

Founding Member
Jan 12, 2000
3,316
63
109
Ocean Springs MS
Jul 19, 2006
#11
  • Jul 19, 2006
  • #11
I've tried both gaskets and rtv alone.

Rtv and gaskets is usually the worst way, as rtv is slippery, the opposite of what you want. Something usually slips and leaks.

I have made plain blue or red rtv work and it is easiest to clean next time.

However, I am back to gaskets and either Permatex No 2 or HiTack gasket adhesive, on both sides of the gasket. It seems to work the first time, every time.
 
8

8950HO

New Member
Mar 31, 2005
658
2
0
Jul 19, 2006
#12
  • Jul 19, 2006
  • #12
I used Hylomar universal blue gasket sealer on the wp gaskets including the backing plate gasket.

It has never leaked.This stuff is better than silicone imo for a job like this.
 
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