| [ Total Views: 613 | Total Replies: 7 | Thread Id: 100584 ] |
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 Aussie
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| posted on January 23rd, 2013 at 10:45 AM |
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Limit of stock fuel pump
Where does the limit sit with a stock fuel pump before needing to step up to an electric one? Would assume it is a combination of capacity/power
output and intended use? Any rules of thumb?
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HappyDaze
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| posted on January 23rd, 2013 at 11:50 AM |
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My rule of thumb would be......stock fuel pump, stock engine.
I'd rather wear a Beetle out by racing it than by polishing it!
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SuperOwen
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| posted on January 23rd, 2013 at 11:58 AM |
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Intended use does affect what you can get away with, i.e. if you only potter around the streets with short blasts the stocker might be usable on a
150hp engine, take that same car down the long straight at a circuit or strip and you might starve it by the end. Some guys manage to run them in
12sec street cars but thats really pushing it I think. If you do replace it make sure your regulator is suitable and the replacement pump is actually
an upgrade. The CB ones are ok I believe.
Also if you really need a bigger pump you probably need bigger lines as well. My 2c anyway 
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ian.mezz
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| posted on January 23rd, 2013 at 02:08 PM |
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ok on 1916 , twin webbers stock fuel line.
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Klaus
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| posted on January 25th, 2013 at 06:51 PM |
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run the 2110 in the dc with a stock pump (new)with dual 44's and it loves fuel and yet to run lean
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Joel
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| posted on January 25th, 2013 at 08:22 PM |
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Dunno why people are so scared of stock pumps.
Plenty of folks out there running IDAs and stock pumps.
Classic example is Glenn Rings 2180, pumping out 200ponies with 48IDAs on a stock pump for decades.
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 matberry
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| posted on January 25th, 2013 at 10:22 PM |
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My old 2332 with IDA's made 141 rwhp with a stock pump. Neer noticed any prolems but I ended up converting to electric to clean up the installation
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Aussie
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| posted on March 30th, 2013 at 07:57 AM |
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| Quote: | Originally
posted by matberry
My old 2332 with IDA's made 141 rwhp with a stock pump. Neer noticed any prolems but I ended up converting to electric to clean up the installation
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Interesting - thats a good number 
I like the idea of a stock pump for simplicity/reliability. Dont like the added wiring required on an electric one. Making sure cut off/prime etc
still works and its safe.
Are there any mods required to the fuel tank to prevent vacuum when using larger lines and/or elec pump?
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