| [ Total Views: 602 | Total Replies: 4 | Thread Id: 89460 ] |
|
|
 Super1302
Officially Full-On Dubber
Posts: 361
Threads: 76
Registered: July 31st, 2008
Member Is Offline
Theme: UltimaBB Pro Blue ( Default )
|
 posted on March 25th, 2011 at 07:33 PM |
|
|
electric fuel pump. WHY?
i am thinking of running an electric fuel pump on my 48ida's on me 2332.
will the standard pump supply the pressure it will need for a run down the track if required and of course for every day driving, well i should say VW
runs.
is not the standard fuel pump up to it? i hear that webers only need a few psi to run. someone please explain.
advantages v disadvantages.
cheers. Paul 
|
|
|
 helbus
A.k.a.: Pete S
Super Administrator
Mad fabricator, paint and body
Posts: 7386
Threads: 312
Registered: September 1st, 2002
Member Is Offline
Location: In the garage chopping cars into bits
Theme: UltimaBB Pro Blue
Mood: In the thinking chair
|
| posted on March 25th, 2011 at 09:42 PM |
|
|
Pressure (psi) and flow rate are two different things.
Webers only need low psi, about 4psi, and a high flow rate.
So stock pump may the required pressure, but not the flow rate.
An analogy could be used like the following. High psi is like water squirted from a water cutter. High flow rate is like a bucket of water tipped
over. One is pressure, the other is quantity.
|
|
|
Joel
Scirocco Rare
Now containing 100% E-Wang
Posts: 9368
Threads: 211
Registered: February 14th, 2006
Member Is Offline
Location: Northern Rivers NSW
Theme: UltimaBB Pro Purple
Mood: Tact Level 0.00
|
| posted on March 26th, 2011 at 09:23 AM |
|
|
Plenty of people run stock pumps with IDAs
If you run electric there are a few things to get around.
A safety cut out is a big one that most people don't worry about
You want the pump to stop running if the engine stalls or you're in an accident.
Few ways around that, I've used the alternator signal before, pump only runs as long as the alternator is spinning but this also needs a starter
prime wired in, either push button or a feed from the starter to the relay.
Another method I also used when I had electric pump was an EFI fuel pump relay, mine was out of a Commodore but plenty of cars use them.
It's a relay that looks for a tacho signal to activate the pump.
Also depending what pump you use many don't stop the flow when they're not running so if you park uphill with a full tank you may come back to a
sump full of fuel.
But if the diaphragm goes in a stock pump, same deal.
The stock pump does the job and doesn't suffer from any of those issues but the quality of the pumps available these days is a bit on the ordinary
side.
|
|
|
1303Steve
A.k.a.: Steve Carter
Scirocco Rare
Posts: 8636
Threads: 559
Registered: August 27th, 2002
Member Is Offline
Location: Sydney, NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Parrot Heading
|
| posted on March 26th, 2011 at 10:10 AM |
|
|
Hi
To feed that sort of motor you will need a bigger fuel line as well.
Steve
|
|
|
 Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12757
Threads: 732
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on March 26th, 2011 at 10:12 AM |
|
|
^^^ beat me to it Steve
Futue te ipsum!!!
|
|
|
