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dan(at)azshowersolutions.
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 Posted: Tue Aug 05, 2008 3:23 pm Post subject: Firewall sealant |
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I was wondering what any of yous guys (or gals) have used to seal small holes in the firewall? Certainly looking for as high a heat resistance possible. RTV? Gasketseal? Not sure what would be the best. In looking around the net I found a ceramic sealant that when cured would resist 2100 degrees, yet I think it would be too brittle and just crack under vibration.
Oh wise ones who have gone before?
Thanks,
Dan B
Mesa, AZ
KF-IV, 912s
[quote][b]
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N81JG(at)aol.com
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| Posted: Tue Aug 05, 2008 3:59 pm Post subject: Firewall sealant |
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I used Firestop Putty Pads to seal the wires, edges and passages through the firewall in my RV7A. It is available from industrial electrical stores for sealing junction boxes in walls. The putty is about the consistency of thick chewing gum and stays pliable until hit by fire, then it chars and hardens rather than melting or burning through. The pliability allows removal if you need to open the hole or remove wires or cables. Check Google.com for different types and manufacturers. I think I used Hilt, but 3M makes it also.
John Greaves
RV7A and VariEze
Redding, CA
In a message dated 8/5/2008 4:24:02 P.M. Pacific Daylight Time, dan(at)azshowersolutions.com writes:
| Quote: | I was wondering what any of yous guys (or gals) have used to seal small holes in the firewall? Certainly looking for as high a heat resistance possible. RTV? Gasketseal? Not sure what would be the best. In looking around the net I found a ceramic sealant that when cured would resist 2100 degrees, yet I think it would be too brittle and just crack under vibration.
Oh wise ones who have gone before?
Thanks,
Dan B
Mesa, AZ
KF-IV, 912s
| Quote: |
f="http://www.matronics.com/Navigator?Kitfox-List">http://www.matronics.com/Navigator?Kitfox-List
.matronics.com/">http://forums.matronics.com
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Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos.
[quote][b]
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Lynn Matteson
Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
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| Posted: Tue Aug 05, 2008 4:17 pm Post subject: Firewall sealant |
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You mean like pop rivet small?...hint, hint....
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200
Status: flying...oops...holding short at 561.8 hrs
do not archive
On Aug 5, 2008, at 7:22 PM, Dan Billingsley wrote:
| Quote: | I was wondering what any of yous guys (or gals) have used to seal
small holes in the firewall? Certainly looking for as high a heat
resistance possible. RTV? Gasketseal? Not sure what would be the
best. In looking around the net I found a ceramic sealant that when
cured would resist 2100 degrees, yet I think it would be too
brittle and just crack under vibration.
Oh wise ones who have gone before?
Thanks,
Dan B
Mesa, AZ
KF-IV, 912s
www.matronics.com/Navigator?Kitfox-List _-
www.matronics.com/contribution _-
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Lynn
Kitfox IV-Jabiru 2200
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dan(at)azshowersolutions.
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| Posted: Tue Aug 05, 2008 4:35 pm Post subject: Firewall sealant |
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Not sure of your hints Lynn, but not really. I am working on a KF-IV and installing the Rotax 912s which requires one to make a recess in the top of the firewall to accept the oil can. I chose to make the firewall out of a solid piece of Stainless and then made a box (see attached link)http://www.azshowersolutions.com/Engine1.html
I ended up with a few small holes in the corners and yes, I was thinking of filling the rivet holes as well. Something I missed in the manual?
Dan B
Lynn Matteson <lynnmatt(at)jps.net> wrote:
[quote]--> Kitfox-List message posted by: Lynn Matteson
You mean like pop rivet small?...hint, hint....
Lynn Matteson
Kitfox IV Speedster
Jabiru 2200
Status: flying...oops...holding short at [quote][b]
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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Tue Aug 05, 2008 4:38 pm Post subject: Firewall sealant |
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At 04:22 PM 8/5/2008, you wrote:
| Quote: | | I was wondering what any of yous guys (or gals) have used to seal small holes in the firewall? Certainly looking for as high a heat resistance possible. RTV? Gasketseal? |
The construction industry uses a great intumescent putty from 3M. ( http://tinyurl.com/6flp2l ) It never hardens, is really sticky (messy,) and is good to at least 675F. You can get it on-line or at most construction supply houses. I've been using it, but haven't tested it yet. 
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar. [quote][b]
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Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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Tom Jones
Joined: 12 Mar 2006
Posts: 752
Location: Ellensburg, WA
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| Posted: Tue Aug 05, 2008 5:26 pm Post subject: Re: Firewall sealant |
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| Quote: | | I was wondering what any of yous guys (or gals) have used to seal small holes in the firewall? |
I use Red RTV.
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Tom Jones
Classic IV
503 Rotax, 72 inch Two blade Warp
Ellensburg, WA |
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Dick Maddux
Joined: 24 Jun 2008
Posts: 516
Location: Milton, Fl
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| Posted: Wed Aug 06, 2008 5:28 am Post subject: Firewall sealant |
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Preparation H ?? (bad I know but couldn't resist0
Dick Maddux
Pensacola Fl
Looking for a car that's sporty, fun and fits in your budget? Read reviews on AOL Autos.
[quote][b]
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mikeperkins
Joined: 22 May 2007
Posts: 123
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| Posted: Wed Aug 06, 2008 6:34 am Post subject: Firewall sealant |
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Permatex High Temperature RTV sealant (red) is rated from -75 to +650 F (intermittent) and resists fuel and oil. I’ve seen it gooped on muffler springs where it seems not to degrade. To plug firewalls, however, I’d be inclined to use rivets for small holes. For bigger holes I’d use riveted metal plates with a little red Permatex to create a seal against fumes.
Mike Perkins
Model I s/n 175
[quote][b]
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