Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Water Pump Gasket - Dry or use a Sealer?

Thread Tools
 
Search this Thread
 
Old 01-01-2006, 03:38 PM
  #1  
cfc928gt
Rennlist Member
Thread Starter
 
cfc928gt's Avatar
 
Join Date: Jan 2005
Location: Denver, CO
Posts: 813
Likes: 0
Received 2 Likes on 2 Posts
Default Water Pump Gasket - Dry or use a Sealer?

I know the WSM wants the water pump put on using just the gasket and no additional sealer but I thought I'd ask for opinions from those who have BTDT. The WP I pulled off didn't have any sealer and the bolts were in pretty bad shape so I was thinking of using some Ultra Blue on each side.
Old 01-01-2006, 03:41 PM
  #2  
Garth S
Rennlist Member
 
Garth S's Avatar
 
Join Date: Oct 2003
Location: Nova Scotia
Posts: 7,210
Likes: 0
Received 16 Likes on 13 Posts
Default

I've installed the gaskets dry and used anti-seize on fresh bolts and clean bore holes - no leaks.
Old 01-01-2006, 04:06 PM
  #3  
heinrich
928 Collector
Rennlist Member

 
heinrich's Avatar
 
Join Date: Jan 2003
Location: Seattle
Posts: 17,270
Received 5 Likes on 5 Posts
Default

seal it
Old 01-01-2006, 04:10 PM
  #4  
Bill Ball
Under the Lift
Lifetime Rennlist
Member
 
Bill Ball's Avatar
 
Join Date: Mar 2002
Location: Buckeye, AZ
Posts: 18,647
Received 49 Likes on 36 Posts
Default

They are dry from the factory. However, based on prompting from others, I have used Yamabond. This is a non-drying sealer that is easy to clean off with brake cleaner when it comes time to change the WP again. Mine has been leak-free, but then so was the factory pump witha dry gasket at 95K miles when I replaced it.
Old 01-01-2006, 04:53 PM
  #5  
cfc928gt
Rennlist Member
Thread Starter
 
cfc928gt's Avatar
 
Join Date: Jan 2005
Location: Denver, CO
Posts: 813
Likes: 0
Received 2 Likes on 2 Posts
Default

I have some Yamabond left over from my oil pan gasket. In fact after reading all the posts to my tensioner thread I decided to use it on the tensioner gasket. Looks like a winner for the WP as well. Nice matching color with aluminum vs the Ultra Blue...
Old 01-01-2006, 04:58 PM
  #6  
heinrich
928 Collector
Rennlist Member

 
heinrich's Avatar
 
Join Date: Jan 2003
Location: Seattle
Posts: 17,270
Received 5 Likes on 5 Posts
Default

CF, I have to disagree. I think the red of the permatex gasket maker offets very nicely on the block's aluminium and for the tensioner I mixed a tad of playdoh to get a slight orange hue to match the harmonic balancer. For the waterpump I decided to not do the blue thing, it really is so 60's .... it's just not done anymore, so I selected a very nice jet black aircraft pump sealer, also Permatex, to downplay the harsh casting effects of the pump, nd the gold resprayed pump roller (incidentally next pump job that roller's gonna get a nice fresh coat of Big Red caliper coating )
Old 01-01-2006, 05:15 PM
  #7  
borland
Drifting
 
borland's Avatar
 
Join Date: Aug 2003
Location: Camarillo, CA, USA
Posts: 2,259
Likes: 0
Received 2 Likes on 2 Posts
Default

Originally Posted by cfc928gt
I know the WSM wants the water pump put on using just the gasket and no additional sealer but I thought I'd ask for opinions from those who have BTDT. The WP I pulled off didn't have any sealer and the bolts were in pretty bad shape so I was thinking of using some Ultra Blue on each side.
Please tell us what page in the WSM it says "no additional sealer".

The original factory gasket was asbestos. Asbestos makes an excellent gasket material that usually requires no sealant. Unfortunately, asbestos water pump gaskets are no longer available.

The problem with using surface sealants like Ultra Blue (RTV) or gasket dressing (Halomar), is that the gasket material will usually weep coolant causing corrosion of the pump fasteners.

A better choice of sealant, is a solvent based sealant which will penetrate the gasket and make the gasket impervious to coolant. Permatex High Tack Gasket sealant (98H or 98D) or Permatex High Tack Spray-A-Gasket sealant (99GA or 99MA) are excellent products.

http://www.permatex.com/images/catal...20Permatex.pdf

borland
90' S4, Slate Metallic
Old 01-01-2006, 05:42 PM
  #8  
cfc928gt
Rennlist Member
Thread Starter
 
cfc928gt's Avatar
 
Join Date: Jan 2005
Location: Denver, CO
Posts: 813
Likes: 0
Received 2 Likes on 2 Posts
Default

Heinrich, LOL! Openned myself up to that one didn't I.

Borland, you're right in that is doesn't specify 'no sealer', it just sayes to replace gasket and doesn't mention using a sealer. Thanks for your insight into the original asbestos sealing characteristics, I didn't know that. Great info on the high tack and why that would be superior as well, very helpful.
Old 01-01-2006, 06:20 PM
  #9  
GlenL
Nordschleife Master
 
GlenL's Avatar
 
Join Date: Jul 2003
Location: Minneapolis, Minnesota
Posts: 7,660
Received 32 Likes on 26 Posts
Default

Dry unless there is corrosion pitting or other damage to the sealing surfaces.
Old 01-01-2006, 07:02 PM
  #10  
G Man
Drifting
 
G Man's Avatar
 
Join Date: Aug 2002
Posts: 2,617
Likes: 0
Received 2 Likes on 2 Posts
Default

Not sure if suitable for this application, but " the right stuff " by Permatex is some bad-*** stuff. My National Guard unit went to Camp Dodge near Des Moines Iowa a couple years ago to rebuild Hum-Vee engines for service repalcements. MIL Spec calls for it in place of oil pan and valve cover gaskets and it definitely gets the job done!
Old 01-01-2006, 07:24 PM
  #11  
heinrich
928 Collector
Rennlist Member

 
heinrich's Avatar
 
Join Date: Jan 2003
Location: Seattle
Posts: 17,270
Received 5 Likes on 5 Posts
Default

Seriously I use Permatex nonhardening black stuff. Very effective.
Old 01-01-2006, 10:14 PM
  #12  
just bill
Advanced
 
just bill's Avatar
 
Join Date: Aug 2005
Posts: 68
Likes: 0
Received 0 Likes on 0 Posts
Default

Hey guys, splane somethin to me, what is Yamabond? I know about the blue stuff and the brown stuff and indian head. But not Yamabond. In a few weeks the rebuild begins after the the clean up and the machine shop finishes the heads. I will be starting by replacing the oil pan gasket, then re-rebuilding the tensioner. I am a little amiss when it comes to P-cars, however when I pulled my oil pan the bolts were a little more than finger tight, 97k+/- on them, wouldn't any of the thread sealers work to keep them from loosening??? I noticed in the manual there are different types of sealants then I have worked with in the past, are these available in America or are they only in Germany and are some American substitites available.

thanks

bill
Old 01-01-2006, 10:27 PM
  #13  
FlyingDog
Nordschleife Master
 
FlyingDog's Avatar
 
Join Date: Sep 2004
Location: Not close enough to VIR.
Posts: 9,429
Likes: 0
Received 2 Likes on 2 Posts
Default

Yamabond (Yamaha) and Hondabond (Honda) are just proprietary brands of sealants. They're probably made by Permatex or other major brands, but to different standards.

Jim, good luck getting your waterpump back off if you use The Right Stuff. I know people who use that on diff housings for rockcrawlers. They generally plan on destroying the diff cover when they remove it unless it's a really heavy duty armored one.
Old 01-01-2006, 10:32 PM
  #14  
Bill Ball
Under the Lift
Lifetime Rennlist
Member
 
Bill Ball's Avatar
 
Join Date: Mar 2002
Location: Buckeye, AZ
Posts: 18,647
Received 49 Likes on 36 Posts
Default

Yamabond is available from Yamaha dealers. I actually use Threebond 1104, bought online. It appears functionally identical to Yamabond and motorcycle guys use them interchangeably. Rumor has it that Threebond makes Yamabond and all the motorcycle bond sealants.

Here's a source for either...

http://www.parkeryamaha.com/index.as...D&ProdID=17084

http://www.parkeryamaha.com/index.as...D&ProdID=19229
Old 01-01-2006, 10:34 PM
  #15  
Bill Ball
Under the Lift
Lifetime Rennlist
Member
 
Bill Ball's Avatar
 
Join Date: Mar 2002
Location: Buckeye, AZ
Posts: 18,647
Received 49 Likes on 36 Posts
Default

Right Stuff is soluble in carb cleaner, but it is probably still a harder cleanup than Yamabond/Threebond/Hondabond.


Quick Reply: Water Pump Gasket - Dry or use a Sealer?



All times are GMT -3. The time now is 02:28 AM.