I will snap... leaking ....

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I will snap... leaking ....

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I will snap... leaking .... - 5/19/2008 5:22:47 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Hi

My 1989 mustang 5.0 engine blew . Bought a 1995 5.0 to replace it . Everything is done ... last step : add oil and coolant . Filled the radiator ... and a HUGE leak came between the water pump and the timing cover . Removed the water pump , replaced the gasket , put it all back together , same leak . Removed the water pump AGAIN , replace the gasket AGAIN and this time , put a LOT of RTV .

Wait 2 hour ... put water on the radiator ... same thing...HUGE LEAK .... so I thought it was maybe a water pump problem (the guy how sold me the engine gave me this water pump)

Took from my old engine the water pump (was replaced 8 month ago) and the timing cover .... new gaskets ...LOT of rtv ... and again .... HUGE LEAK ....always from the same place , under the bolt ....the arrow on the pic ....

Please help ...I'll soak the inside of the car with fuel and light it up if it continues like that ...

franck

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< Message edited by franckybosnie -- 5/19/2008 5:25:05 PM >

Post #: 1

RE: I will snap... leaking .... - 5/19/2008 5:35:15 PM

dave1170

Posts: 44
Joined: 2/24/2008
Status: offline

I put a 5.0 engine out of a 94 in my 92 LX. I know the waterpumps on the later 5.0's had different bolt pattern. When I compared the two waterpumps it seemed as though there was an extra bolt on the newer waterpump. I think, on the older pumps the impeller was exposed and on the newer pump it had a metal cover. I hope this helps, maybe someone here can confirm what I have described.

(in reply to franckybosnie)

Post #: 2

RE: I will snap... leaking .... - 5/19/2008 5:35:19 PM

wrenchturner75

Posts: 152
Joined: 1/3/2008
Status: offline

are you sure that when you install the long bolts that there actually getting tight against the water pump? ford small blocks are notorious for getting corrosion buildup in the holes with the long bolts, maybe the bolts are bottoming out on the corrosion and not actually getting tight. just a thought, and just to be sure, this is the setup you have right? the water pump, next is a gasket then a steel backing plate that is bolted to the back of the pump, then another gasket that goes against the timing chain cover.

(in reply to franckybosnie)

Post #: 3

RE: I will snap... leaking .... - 5/19/2008 6:11:32 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Yes . this is exactly the set up . water pump - gasket - metal plate with 2 bolts - gasket - timing cover- timing cover gasket - block .

Always leak at the same place . What dave1170 said could be a clue?? I know the 1995 has a different water pump .... but the block's casting is the came I think . The 1989 timing cover and water pump fits bolts-on ....

< Message edited by franckybosnie -- 5/19/2008 6:15:18 PM >

(in reply to wrenchturner75)

Post #: 4

RE: I will snap... leaking .... - 5/19/2008 6:23:35 PM

stang8689

Posts: 5092
Joined: 1/1/2007
From: Milford, Delaware
Status: offline

I know 94-95 have standard pumps where the foxes have reverse rotatation pumps, which one are you using

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89 2.3 Turbo, 82 T-Top Notch 5.0, 86 LX T-Top 5.0 roller and 86 GT Black in and out with Gt 40X Heads, Smoothed Engine Bay, Battery in Trunk, SLP's, Bolt-on's

(in reply to franckybosnie)

Post #: 5

RE: I will snap... leaking .... - 5/19/2008 6:28:09 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

OH! I did'nt knew that . I tried with the pump someone gave to me (what year ..I don't know) but the pump is identical to my 1989 water pump ... I tried both ... both are leaking .....

The leaking happens right away , no need to stard the engine .... just put some water in tha radiator and it will leak instantly , no pressure at all !

(in reply to stang8689)

Post #: 6

RE: I will snap... leaking .... - 5/19/2008 6:35:39 PM

mjr46

Posts: 10901
Joined: 6/13/2007
Status: offline

to use a 95 engine in a fox body the timing cover and water pump from the fox body must be used on the block..sn-95 water pumps and timing covers are different

< Message edited by mjr46 -- 5/19/2008 6:36:17 PM >

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quote:

ORIGINAL: AdderMk2

im an asshole.... deal with it

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Post #: 7

RE: I will snap... leaking .... - 5/19/2008 6:37:49 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Well , the last set-up I did was that : The 1995 block + 1989 timing cover + 1989 water pump ... and It leaks right away , as I said , no need to turn the engine , leaks right away from always the same place...

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Post #: 8

RE: I will snap... leaking .... - 5/19/2008 6:46:47 PM

mjr46

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Joined: 6/13/2007
Status: offline

then run a straight edge across it and are you sure you have the backing plate on the water pump flipped the right way??

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quote:

ORIGINAL: AdderMk2

im an asshole.... deal with it

(in reply to franckybosnie)

Post #: 9

RE: I will snap... leaking .... - 5/19/2008 6:50:19 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

quote:

ORIGINAL: mjr46

then run a straight edge across it and are you sure you have the backing plate on the water pump flipped the right way??

You mean the plate behing the water pump? Maybe I'm wrong , but there is only one way to fit it .... the 3 other ways (up side down - left ans right) , the bolds do not fits . And every times I changed the gasket between the plate and the water pump

(in reply to mjr46)

Post #: 10

RE: I will snap... leaking .... - 5/19/2008 6:51:27 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Oh ... yeah last time I used a straight edge ... everything is OK ..

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Post #: 11

RE: I will snap... leaking .... - 5/19/2008 7:09:27 PM

mjr46

Posts: 10901
Joined: 6/13/2007
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surfaces are not pitted at all??

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quote:

ORIGINAL: AdderMk2

im an asshole.... deal with it

(in reply to franckybosnie)

Post #: 12

RE: I will snap... leaking .... - 5/19/2008 7:12:02 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
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No , and I cleaned every piece of gasket ... all parts are neat!! I'm confused

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Post #: 13

RE: I will snap... leaking .... - 5/19/2008 7:16:27 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

If the engine is supposed to be coolled down with standard pump , and I'm using a reverse rotation pump ... could it cause a problem ??

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Post #: 14

RE: I will snap... leaking .... - 5/19/2008 7:19:23 PM

mjr46

Posts: 10901
Joined: 6/13/2007
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if the leak is definately coming between the gaskets then you'll have to make sure the impeller is not hitting the backing plate at all which would allow it not to sit flush..and this would be evident once it is all tightened down and when you went to turn pump over by hand it'd bind or be stiff or make a scrapping noise

_____________________________

quote:

ORIGINAL: AdderMk2

im an asshole.... deal with it

(in reply to franckybosnie)

Post #: 15

RE: I will snap... leaking .... - 5/19/2008 7:22:02 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Well , it seems to sit flush ... I tried to spin the pump , everything went fine . Iad I could see the RTV getting "squeezed out" while I was tightening the bolts ...

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Post #: 16

RE: I will snap... leaking .... - 5/19/2008 7:23:02 PM

franckybosnie

Posts: 60
Joined: 6/19/2005
Status: offline

Anyway there is a backing plate

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Post #: 17

RE: I will snap... leaking .... - 5/19/2008 7:25:13 PM

mjr46

Posts: 10901
Joined: 6/13/2007
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is it possible that the pump may have a hairline crack??..I use permatex's "the right stuff" = it's like super glue!!!!