walbro fuel pump...
walbro fuel pump... i just replaced my stock 300zx fuel pump with the walbro...but i find it kinda wierd...the electrical connection of the stock and walbro appear that it will submerge in the gasoline....is there no fear of possible sparks that mite ignite the gas tank?
On The Tree
Joined: Jul 2006
Posts: 167
Likes: 0
From: tx
*hosspowerinc- Yup it will only ignite as a vapor. *
yes only as a vapor, but oxygen must be present.
Gasoline is not conductive, it is explosive and convective. The explosion is caused by igniting a flame produced by a spark.
In order to light a flame(see above), or cause ignition, you need oxygen. Inside the gas tank there is very little or no oxygen because there are more gasoline molecules and they are heavier than the few oxygen molecules, thus no ignition.( just don't test this theory on my behalf
)
Think about it, just about every prouduction car today uses an intank pump. A few reasons being are that the pump stays cooler, its quieter, and is more reliable.
BTW, if none of this were true, *Yellowbrother " huh??? i hope u're kidding"*, there would be reports of vehicles blowing up everywhere because someone started their car on a vapor filled, almost empty tank of gas!!!!!
ChrisP
yes only as a vapor, but oxygen must be present.
Gasoline is not conductive, it is explosive and convective. The explosion is caused by igniting a flame produced by a spark.
In order to light a flame(see above), or cause ignition, you need oxygen. Inside the gas tank there is very little or no oxygen because there are more gasoline molecules and they are heavier than the few oxygen molecules, thus no ignition.( just don't test this theory on my behalf
)Think about it, just about every prouduction car today uses an intank pump. A few reasons being are that the pump stays cooler, its quieter, and is more reliable.
BTW, if none of this were true, *Yellowbrother " huh??? i hope u're kidding"*, there would be reports of vehicles blowing up everywhere because someone started their car on a vapor filled, almost empty tank of gas!!!!!
ChrisP
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On The Tree
Joined: Jul 2006
Posts: 167
Likes: 0
From: tx
just remembered... I had saved this article from some time ago. It's mostly about aircraft (TWA flight 800) but scroll all the way to the bottom and there is an excellent explanation on why in-tank pumps in auto's don't explode.
http://www.galcit.caltech.edu/EDL/pr...nceptions.html
I had saved this article because I had installed a FAA mandatory modification on some Boeing 737's back in 1996 because of TWA flight 800. "Supposedly", some wiring that passed through the fuel tanks were chaffing against each other, caused a spark, and thats what was said to have caused the explosion of that aircraft. The mod was to install a polyurethane tubing around the wires, keeping them from touching each other and further sealing them from exposure to fuel.
ChrisP
http://www.galcit.caltech.edu/EDL/pr...nceptions.html
I had saved this article because I had installed a FAA mandatory modification on some Boeing 737's back in 1996 because of TWA flight 800. "Supposedly", some wiring that passed through the fuel tanks were chaffing against each other, caused a spark, and thats what was said to have caused the explosion of that aircraft. The mod was to install a polyurethane tubing around the wires, keeping them from touching each other and further sealing them from exposure to fuel.
ChrisP
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