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Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
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 Posted: Thu Mar 30, 2006 6:54 am Post subject: Fire Seal 2000 for cracked 931 exhaust manifolds? |
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I wonder if this stuff would hold up on a cracked 931 manifold -
http://www.prp-porstore.com/POR-15-Fire-Seal-2000.html
(I don't have a cracked manifold (as far as I know), just wonder if it would work..)
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"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
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Tigger937
Joined: 11 Apr 2004
Posts: 919
Location: PCA Milwaukee Region
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| Posted: Thu Mar 30, 2006 8:41 am Post subject: |
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Great find if it works. Approximately, what is the temp. of a red hot exhaust manifold?
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1981 931 (Concours)
1982 931 (Daily Driver)
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Raceboy
Joined: 01 Mar 2004
Posts: 2327
Location: Estonia, Europe
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| Posted: Thu Mar 30, 2006 3:37 pm Post subject: |
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It should be somewhere 1000-1200 C, but I could be mistaken.
Anyway, this is a nice find indeed.
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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
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'84 924, turbocharged, sold.
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-nick
Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA
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| Posted: Fri Mar 31, 2006 4:10 am Post subject: |
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Only one way to find out- buy the quart container of this stuff, dip the whole manifold in it, and take it out for a few runs 
Seriously though, it's definitely worth a try. I have an extra manifold with a crack if anyone wants to try it out.
nick |
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Motorheadmike
Joined: 22 Feb 2006
Posts: 25
Location: missoula, montana
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| Posted: Thu Apr 06, 2006 2:18 pm Post subject: |
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For $15 and shipping I'll bite 
Nick, What do you want for the cracked manifold?
Mike
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1981 931 series2 |
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Vince Ponz
Joined: 02 Nov 2002
Posts: 3581
Location: Florida
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| Posted: Thu Apr 06, 2006 11:48 pm Post subject: |
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I had mine welded for $200. He seemed to know what he was doing.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock |
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-nick
Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA
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| Posted: Fri Apr 07, 2006 1:37 am Post subject: |
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PM sent. Mike might be our guinea pig
nick |
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Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
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| Posted: Fri Apr 07, 2006 2:58 am Post subject: |
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| http://www.bankspower.com/sidewinder/Tech_whyegt.cfm wrote: | , what constitutes excessive EGT? If everything is working properly, 1250º to 1300º F. is a safe turbine inlet temperature, even for sustained running, mile after mile. Above 1300º F. things can start to get edgy. Remember, excessive EGT damage is cumulative. Over 1400º F., you’re usually gambling against a stacked deck and it’s only a matter of time until you lose. The higher the EGT, the shorter that time will be.
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That's talking about diesel turbo engines though.
-But pyrometers (EGT gauges) sold here generally cover 0-1600ºF, so it should be safe to say that manifold temps normally fall within that range.
As for "red hot", I haven't found anything on what approx. temp. you're at when things start to glow - http://saabnet.com/tsn/photo/0202.html
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"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
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Kenodog
Joined: 25 Jun 2003
Posts: 2669
Location: Vancouver,B.C.
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| Posted: Tue Apr 11, 2006 1:50 pm Post subject: |
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2000 degrees is pretty freakin hot.We were heat treating some 4140 at school and at 1500 deg. F it was almost white hot.
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1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
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Tigger937
Joined: 11 Apr 2004
Posts: 919
Location: PCA Milwaukee Region
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| Posted: Tue Apr 11, 2006 9:58 pm Post subject: |
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I'm not a metallurgist, but don't different materials glow differently at the same temperatures? Just asking.
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1981 931 (Concours)
1982 931 (Daily Driver)
"Think outside the box" |
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Benino
Joined: 30 Jan 2003
Posts: 508
Location: Vista, CA (San Diego County)
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| Posted: Fri Apr 14, 2006 8:31 am Post subject: |
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so. . . . is anytone testing this out?
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1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA |
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Peter_in_AU
Joined: 29 Jul 2001
Posts: 2743
Location: Sydney, Australia
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| Posted: Fri Apr 14, 2006 11:17 am Post subject: |
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| Tigger937 wrote: | | I'm not a metallurgist, but don't different materials glow differently at the same temperatures? Just asking. |
Yes. For example stainless steel goes through a completely different colour change compared to mild steel.
Mild steel at 1500F is described as a "bright" red. At 1900F it's bright yellow and at 2100F it's white. Stainless goes black at 1000F and only changes to a dark red before it melts at 2600F.
Most welding books have a table showing temp vs colour although usually only for mild steel. A google session should turn up some charts if you're interested.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)
Learn to love your multimeter and may the search be with you |
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9magazine
Joined: 28 Dec 2005
Posts: 41
Location: Lakeside/Pinetop, Arizona
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| Posted: Mon Dec 31, 2007 6:33 am Post subject: |
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Any update on this product?
Brian
9magazine.com |
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randy_eich
Joined: 23 Jun 2007
Posts: 127
Location: West Richland WA 99353
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| Posted: Tue Jan 01, 2008 11:38 pm Post subject: |
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| Go to your local Caterpillar store and you can get the same stuff off the shelf. I tried it on a 3508 turbo outlet and after it got hot, it just crumbled off. So I really don't think it will hold up. Diesel exhaust manifolds don't run very hot. I can light a smoke off gas, but not diesel. |
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