Electric fuel pumps

Chopper Reid

Senior Member
I reckon the majority of electric fuel pumps down under are vehicle fuel pumps that you can buy in any auto shop. My gyro has done approx 1500 hours on its auto fuel pump...
 

eddie

RAF, turbo subaru 230hp
Any pump will work as long as the pressure is 3-5psi for carb engine,injected engines

require more pressure. NAPA would be the fastest source.





Best regards,
 

GyrOZprey

Aussie in Kansas.
Good document to compare...

Good document to compare...

http://www.wilmink.nl/pierburg/brandstofpomp_oldtimer_ombouw.pdf

( :yo: kudos to Cammie for her help in finding the information I needed!) :first:

chart shows the various specs for the different pierburg pumps ...seems a smart idea to stick to the same pt # ... :der:

7.21440.78.0 .... hard to find for sale online in US ... got one on order from Europe! $131 incl S&H ....(OE) ..... will take a couple of weeks!

The GOOD news ... on systematically checking stuff before pulling the fuel system apart ...I found a loose wire behind the panel ... when i tickled the wires ...pump fired up & showed normal pressure!! :peace: ... now to chase down the wiring glitch!! :rolleyes:
 

Piot135pd

Here to Learn and Help
GyrOZprey;n910030 said:
Good document to compare...

http://www.wilmink.nl/pierburg/brandstofpomp_oldtimer_ombouw.pdf

( :yo: kudos to Cammie for her help in finding the information I needed!) :first:

chart shows the various specs for the different pierburg pumps ...seems a smart idea to stick to the same pt # ... :der:

7.21440.78.0 .... hard to find for sale online in US ... got one on order from Europe! $131 incl S&H ....(OE) ..... will take a couple of weeks!

The GOOD news ... on systematically checking stuff before pulling the fuel system apart ...I found a loose wire behind the panel ... when i tickled the wires ...pump fired up & showed normal pressure!! :peace: ... now to chase down the wiring glitch!! :rolleyes:
Chris, would you know which one on that page you linked is a good fuel pump for a 912ULS?
 

eddie

RAF, turbo subaru 230hp
I have been using the walbro 255 pumps on my injected Subaru 2.5.

I have been using the same pumps for 800 hrs with no problems.
 

Piot135pd

Here to Learn and Help
I did an online search for walbro 255 and got anything from $200 to $19 for the same looking 255 Lph pumps. Some look like they go inside of the tank and are even cheaper. Is this the pump you're using, it says it's good for the Subaru 2.5? Will this one have enough fuel flow for the Rotax 912?

Here's the cheapest generic brand pump I've found https://www.ebay.com/itm/Electric-25...UAAOSwXqZbP2F1

Looks just like this original Walbro pump https://www.ebay.com/itm/BRAND-NEW-WALBRO-255LPH-FUEL-PUMP-CIVIC-INTEGRA-WRX-GSS342-/302846419537?_trksid=p2385738.m4383.l4275.c10
 
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eddie

RAF, turbo subaru 230hp
No Title

carlosThe one's I am using are #GSL-392 and they are external pumps.and I have 20amp circuit breakers for each pump,

the circuit breaker is incorporated into the toggle switch for each one,the switchs are from aircraft spruce.
 

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Piot135pd

Here to Learn and Help
No Title

These little generic pumps are better than some people give them credit. I've been using this eBay purchased generic $10 inline pump for years to get diesel out of a 55 gallon drum and it's never failed.
 

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Vance

Gyroplane CFI
A small caution Carlos; the Bing carburetors won’t take a lot of fuel pressure and are very sensitive to dirt.

My recollection is a maximum of four pounds. I don’t have the pressure numbers but it should be easy to find for your particular model Bing.

A good fuel filter properly plumbed is important for a 912 and more so for a 914.
 

Piot135pd

Here to Learn and Help
Vance;n1137124 said:
A small caution Carlos; the Bing carburetors won’t take a lot of fuel pressure and are very sensitive to dirt.

My recollection is a maximum of four pounds. I don’t have the pressure numbers but it should be easy to find for your particular model Bing.

A good fuel filter properly plumbed is important for a 912 and more so for a 914.
Thanks Vance !! I was going to go diving for the fuel pressures. I'm also a big proponent of fuel filters anyway.
 
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