04-16-2015, 07:18 AM
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#1
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,433
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How to make the perfect gasket??
I used ultra black. Seems like good stuff.
Outer edge was great. Very little seeped out. Then today I re-opened the case to look for a part I thought I missed and found all these snakes on the inside. Glad I opened it now.
What's the proper method? Not smear the surface, but one bead?
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'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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04-16-2015, 08:36 AM
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#2
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
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Quote:
Originally Posted by Timco
I used ultra black. Seems like good stuff.
Outer edge was great. Very little seeped out. Then today I re-opened the case to look for a part I thought I missed and found all these snakes on the inside. Glad I opened it now.
What's the proper method? Not smear the surface, but one bead? |
You really only need a bead a couple of MM wide to create a seal. More is not always better in this case.
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“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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04-16-2015, 03:08 PM
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#3
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Beginner
Join Date: Mar 2013
Location: Houston
Posts: 1,659
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A single one millimeter wide bead. I always bias the bead about 3/4 the way to the outside edge so the majority of the snakes end up on the outside. I surround bolt holes right at the edge of the bolt hole.
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2003 S manual
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04-16-2015, 08:22 PM
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#4
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Registered Boxster abuser
Join Date: Oct 2011
Location: socal
Posts: 1,014
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hondabond or Yamabond
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04-17-2015, 06:04 AM
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#5
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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In this instance, the sealant won't act like a full paper or metal gasket and become compressed between the two surfaces. Instead, it will generally squirt out the sides as you found. It really doesn't take much sealant to fill the microscopic gaps between two machined surfaces.
In terms of application, I also use Ultra Black (and sometimes Ultra Grey, depending on the application) while I also lay down a thin bead, I then spread it out using my finger. I only leave a fairly thin layer. Thicker than what you might call a film but not much more than that.
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 04-17-2015 at 06:11 AM.
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04-17-2015, 09:01 PM
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#6
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Registered User
Join Date: Apr 2014
Location: new orleans
Posts: 249
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personally, I would suggest using a contrasting color of silicone when making a gasket. if applied too liberally, it will show easily by squirting out. also I like to smooth it out with my finger, and paint it on to the surface very thinly. tighten it to contact and allow it to dry overnight and then torque it into place. when I was working on helicopters, there were certain times when grease was applied in a film which you could feel and not see. when using silicone to mate machined surfaces I use a similar technique.
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2005 Porsche Boxster S, 2000 Porsche Boxster 2.7L Base, 2000 Mazda Miata LS Supercharged, 2010 Toyota Tacoma TRD Off Road
Previous Vehicles: 2005 Ford Mustang GT, 1986 Alfa Romeo Spider, 1971 Alfa Romeo GTV, 1999 Ford Mustang
1977 Toyota Celica GT
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04-18-2015, 08:16 AM
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#7
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I am my own mechanic....
Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,433
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Anyone know proper torque for these bolts?
__________________
'04 Boxster S 50 Jahre 550 Spyder Anniversary Special Edition, 851 of 1953, 6-sp, IMS/RMS, GT Metallic silver, cocoa brown leather SOLD to member Broken Linkage.
'08 VW Touareg T-3 wife's car
'13 F150 Super Crew long bed 4x4 w/ Ego Boost
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