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Some of you may be aware of the thread discussing the benfits of water injection.
The thread started with Bones posting this link to a thread on Pelican.
see-
http://forums.pelicanparts.com/showthread.php?s=&threadid=83059&highlight=carbon+water
Its a rather long thread but if you stay with it, it does make interesting reading.
As far as I was concerned, I was gonna try it.
First, I tried a search on the net using the terms "water injection" and found the link below.
http://website.lineone.net/~da.cushman/misc/mannject.html
As you'll see, Mr mann has tried it on a few different cars - all of them carburetor motors. So with prompting from Bones, I sent Mr Mann an email. I asked him if he had any experience with fuel injection mtrs. Robert Mann replyied " I have v little such experience myself, but a professional engineer friend has had good success with one or a few big needles (blood donor
needles) in the narrowest part of the air induction tract (which is much
less narrow than the venturi in a carb, thus the need for more exposed area
of water in the air stream). This is briefly mentioned in the attached
update. (end quote)
So, today the Porka had a litre or two of water forced down it's throat!
Parked the 911 next to our garden hose, fired up (mtr warm), with air cleaner element removed, held the revs at around 3K; and squirted water into the inlet.
Results;
The bloody thing didn't miss a beat
]
Sure - the water was just a fine spray-trickle; but there was enough water going everywhere to wet me and the car!
If I let it have more, there was a definite miss happening, but with a less amount I sensed a change in the exhaust note - deeper.
As for bits of carbon coming out the exhaust ( as per Pelican thread) - I had a plywood board behind the tail pipe and could see no trace of any carbon.
To this end, I found a 1/8 inlet port on the back of the throttle body, with a rubber hose attached.
I pulled this off and the port had vaccum. So this would be a good place to tee into, with a water feed.
As my Porka has a diss-used rear wiper wash circuit (pipe-hose) from the front to engine compartment, thought I'd use this as a water feed circuit. Put a pet bottle full of water in the boot ( in front of the spare) complete with a breather hose.
But thats another day?
[]
The thread started with Bones posting this link to a thread on Pelican.
see-
http://forums.pelicanparts.com/showthread.php?s=&threadid=83059&highlight=carbon+water
Its a rather long thread but if you stay with it, it does make interesting reading.
As far as I was concerned, I was gonna try it.
First, I tried a search on the net using the terms "water injection" and found the link below.
http://website.lineone.net/~da.cushman/misc/mannject.html
As you'll see, Mr mann has tried it on a few different cars - all of them carburetor motors. So with prompting from Bones, I sent Mr Mann an email. I asked him if he had any experience with fuel injection mtrs. Robert Mann replyied " I have v little such experience myself, but a professional engineer friend has had good success with one or a few big needles (blood donor
needles) in the narrowest part of the air induction tract (which is much
less narrow than the venturi in a carb, thus the need for more exposed area
of water in the air stream). This is briefly mentioned in the attached
update. (end quote)
So, today the Porka had a litre or two of water forced down it's throat!
Parked the 911 next to our garden hose, fired up (mtr warm), with air cleaner element removed, held the revs at around 3K; and squirted water into the inlet.
Results;
The bloody thing didn't miss a beat![
]Sure - the water was just a fine spray-trickle; but there was enough water going everywhere to wet me and the car!
If I let it have more, there was a definite miss happening, but with a less amount I sensed a change in the exhaust note - deeper.
As for bits of carbon coming out the exhaust ( as per Pelican thread) - I had a plywood board behind the tail pipe and could see no trace of any carbon.
To this end, I found a 1/8 inlet port on the back of the throttle body, with a rubber hose attached.
I pulled this off and the port had vaccum. So this would be a good place to tee into, with a water feed.
As my Porka has a diss-used rear wiper wash circuit (pipe-hose) from the front to engine compartment, thought I'd use this as a water feed circuit. Put a pet bottle full of water in the boot ( in front of the spare) complete with a breather hose.
But thats another day?
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