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Sealant Suggestion #5112226
05/22/19 10:13 AM
05/22/19 10:13 AM
Joined: Jan 2011
Posts: 3,114
N.Ohio
Lubener Offline OP
Lubener  Offline OP

Joined: Jan 2011
Posts: 3,114
N.Ohio
I just replaced the water pump on my F150 4.9. Several mounting bolts went into the water jacket. One will not stop dribbling. I used Permatex 2 on the threads prior to inserting. Is there something better to apply to the threads to seal this up better?


The "thinking" man's friend.
Re: Sealant Suggestion [Re: Lubener] #5112244
05/22/19 10:28 AM
05/22/19 10:28 AM
Joined: Jan 2013
Posts: 2,919
Texas
WyrTwister Offline
WyrTwister  Offline

Joined: Jan 2013
Posts: 2,919
Texas
Are the bolts of different lengths ? Did you get the correct bolts into the correct holes .

I would use the non hardening Permatex . Is that # 2 ?

Did you use a gasket or sealant between the block & the water pump .

I would go get the non-hardening Permatex & a new gasket . A good , sharp gasket scraper ( I use a wood chisel from HF ) .

Remove the pump , lean the block and the fasteners . Coat the fasteners that go into the water jacket with the non-hardening sealant and use the sealant to " glue " the gasket to the pump ( gasket oriented correctly ) . I do not use sealant on the block side of the gasket . Much easier to remove the pump latter and less scraping .

Install the pump , with the correct fastener in the correct hole , tightening in a chis-cross pattern . Either torque the fasteners fown by feel or with a torque wrench .

Install the belt and any thing else you removed , fill it up and asd a prayer .

Please let us know how it turned out .

I drove small block Fords in the late 60's and 70's . I got fairly good at changing remain water pumps . Do not know how similar they were to your engine ?

Best of luck to you , :-)


Wyr
God bless
Re: Sealant Suggestion [Re: Lubener] #5112246
05/22/19 10:30 AM
05/22/19 10:30 AM
Joined: Oct 2014
Posts: 13,804
Canyon County Idaho
CT8 Offline
CT8  Offline

Joined: Oct 2014
Posts: 13,804
Canyon County Idaho
If the threard are good in the block use teflon sealant link to product


2015 F150 2.7
2018 F350 6.2
Re: Sealant Suggestion [Re: Lubener] #5112269
05/22/19 10:49 AM
05/22/19 10:49 AM
Joined: Jan 2011
Posts: 3,114
N.Ohio
Lubener Offline OP
Lubener  Offline OP

Joined: Jan 2011
Posts: 3,114
N.Ohio
To add, all bolts were same length. I wire wheeled all bolts to clean them up. I applied the non hardening, permatex 2 to the bolt threads and a thin layer on both sides of the gasket. I had everything on the block very clean, sprayed a little brake cleaner on all surfaces and wiped.


The "thinking" man's friend.
Re: Sealant Suggestion [Re: Lubener] #5112293
05/22/19 11:19 AM
05/22/19 11:19 AM
Joined: Jan 2018
Posts: 1,196
San Antonio, TX
das_peikko Offline
das_peikko  Offline

Joined: Jan 2018
Posts: 1,196
San Antonio, TX
Did you apply the Permatex 2 to the bolt threads only? I always apply it to the threads and the non threaded portion as well.

And I don't know how you put a thin layer on the gasket. The way the stuff is comprised and how thick it is, my gaskets always look like a frosted cake.

Re: Sealant Suggestion [Re: das_peikko] #5112330
05/22/19 11:59 AM
05/22/19 11:59 AM
Joined: Dec 2005
Posts: 11,506
Upper Midwest
kschachn Offline
kschachn  Offline

Joined: Dec 2005
Posts: 11,506
Upper Midwest
Of course if the gasket was designed to be installed with no applied sealant and you used it anyway, that could be the cause of your leak right there.


1994 BMW 530i, 242K
1996 Honda Accord, 277K
1999 Toyota Sienna, 418K
2000 Toyota ECHO, 281K
Re: Sealant Suggestion [Re: Lubener] #5112511
05/22/19 03:12 PM
05/22/19 03:12 PM
Joined: Dec 2016
Posts: 8,886
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,886
Waco, TX
Permatex #14 with PTFE is fanatastic

maybe good ol' "Ultra Blue" would also work great


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
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