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Location: uh.. let me check the hotel key
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Would this hurt anything besides your ears?
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04-13-2005, 12:37 AM
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I wonder what sort of motor that was?
As far as hurting anything? Aside from getting CO poisoning or singing any extremity that got too close, I don't think so. But then as someone once pointed out -- "It's not the poison, but the dosage". As long as you didn't do it for more then a couple of seconds I doubt that there would be any serious damage.
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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04-13-2005, 03:42 AM
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In regard to our motors, Porsche recommends to never run the motor without the exhaust since the exhaust is used to keep some of the heat around the valves so they don't cool too quickly.
Cheers, James
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You will never know the feeling of a driver when winning a race. The helmet hides feelings that cannot be understood. Ayrton Senna 1993 964 RS |
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04-13-2005, 05:16 AM
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With any engine, it's not wise to run it (except for a very short time) without, at least, some type of exhaust manifold or header. Otherwise the rapid cooling of the exhaust valves, when it's shut down, can cause them to warp. I'm sure some engine and valve designs are more susceptible to this than others, but it's probably still a good "rule of thumb".
Jerry M '78 SC |
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04-13-2005, 05:54 AM
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Allison v-12
I think the pipes on a mustang are only 12" long...
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Scott 1982 911 SC 1962 sunroof bug 1991 WE Vanagon CARAT WRX conversion |
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04-13-2005, 06:31 AM
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Yeah, but these are only zero inches long. We used to immediately plug the headers, when I was running a 356 Carrera four-cam with headers, with tennis balls immediately upon shutdown because the word was that the cold air trying to flow up them could warp the valves. Maybe it was an urban legend, I dunno...
Stephan
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Stephan Wilkinson '83 911SC Gold-Plated Porsche '04 replacement Boxster |
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04-13-2005, 06:41 AM
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Looks to me like some kind of marine engine maybe...
Stephan
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Stephan Wilkinson '83 911SC Gold-Plated Porsche '04 replacement Boxster |
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04-13-2005, 06:42 AM
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it could bend the valves. I would never do that.
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04-13-2005, 06:46 AM
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They did use Allisons in boats, tanks, and probably multiple other uses. I have heard about the valve situation but never have seen it first hand. I would never run without exhaust.. maybe to see if the engine will fire but ony for second or two. If you do run it you will find that you will be down on power... Although the engine in the picture seems to have plenty-o-power. lol
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Scott 1982 911 SC 1962 sunroof bug 1991 WE Vanagon CARAT WRX conversion |
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04-13-2005, 06:47 AM
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1969 Porsche 911E 2.0 E
1978 Porsche 911 SC 3.0
1982 Porsche 911SC
