fuel pump, What is an early to late fuel pump conversion Options

[hndyhrr]

Hi, purchased a fuel pump from 914 Rubber. Their part number is 043 906 043 The pumpkin is a 70 4cyc. Web site says I need an early to late fuel pump conversion. Can't find anything on website for that.
Anybody have a Idea what I need . I have sent 914 Rubber a msg via their contact us email and waiting to hear back but really don't want to wait in case some one knows about this.

Thanks


Renee

[hndyhrr]

Hi, purchased a fuel pump from 914 Rubber. Their part number is 043 906 043 The pumpkin is a 70 4cyc. Web site says I need an early to late fuel pump conversion. Can't find anything on website for that.
Anybody have a Idea what I need . I have sent 914 Rubber a msg via their contact us email and waiting to hear back but really don't want to wait in case some one knows about this.

Thanks


Renee

Just heard from 914 Rubber, they don't sell conversion kit (or what ever you call it)

Mallory said he would research it and get back to me. Great just Great. (yes that is sarcasm) DAMN IT ALL ANYWAY

[Ron914]

Hi, purchased a fuel pump from 914 Rubber. Their part number is 043 906 043 The pumpkin is a 70 4cyc. Web site says I need an early to late fuel pump conversion. Can't find anything on website for that.
Anybody have a Idea what I need . I have sent 914 Rubber a msg via their contact us email and waiting to hear back but really don't want to wait in case some one knows about this.

Thanks


Renee

Just heard from 914 Rubber, they don't sell conversion kit (or what ever you call it)

Mallory said he would research it and get back to me. Great just Great. (yes that is sarcasm) DAMN IT ALL ANYWAY

If your pump is located in the front right corner of the engine compartment I believe they want you to move it to the front trunk firewall area . This is where the pump is located in my car a 76 .

[Ron914]

Hi, purchased a fuel pump from 914 Rubber. Their part number is 043 906 043 The pumpkin is a 70 4cyc. Web site says I need an early to late fuel pump conversion. Can't find anything on website for that.
Anybody have a Idea what I need . I have sent 914 Rubber a msg via their contact us email and waiting to hear back but really don't want to wait in case some one knows about this.

Thanks


Renee

Just heard from 914 Rubber, they don't sell conversion kit (or what ever you call it)

Mallory said he would research it and get back to me. Great just Great. (yes that is sarcasm) DAMN IT ALL ANYWAY

If your pump is located in the front right corner of the engine compartment I believe they want you to move it to the front trunk firewall area . This is where the pump is located in my car a 76 .

here's a photo

[hndyhrr]

Hi, purchased a fuel pump from 914 Rubber. Their part number is 043 906 043 The pumpkin is a 70 4cyc. Web site says I need an early to late fuel pump conversion. Can't find anything on website for that.
Anybody have a Idea what I need . I have sent 914 Rubber a msg via their contact us email and waiting to hear back but really don't want to wait in case some one knows about this.

Thanks


Renee

Just heard from 914 Rubber, they don't sell conversion kit (or what ever you call it)

Mallory said he would research it and get back to me. Great just Great. (yes that is sarcasm) DAMN IT ALL ANYWAY

If your pump is located in the front right corner of the engine compartment I believe they want you to move it to the front trunk firewall area . This is where the pump is located in my car a 76 .

here's a photo

Thanks for reply, car is a 70 and pump was in engine compartment. I moved it up to the same area yours is. Lost both Master Cylinder and Fuel pump on a nice twisty ride here in So. Oregon. So MC is in and brakes bled. New fuel pump is next. Seems as if new pump the inlet is larger than the outlet port. If by conversion they mean adapter for line from smaller (out port) to larger OD)line that goes to fuel rail etc. then I have that adapter and no problem.

I guess I'm just a ton grouchy tonight. I would think a website would say only late cars fit this pump instead of putting that conversion statement online when you don't sell it and it is not clear at all what needs to be converted.

Sorry Rant over!

[fiacra]

Pretty sure they mean that if you are still running an early three port pump you will need to modify the fuel lines to use the late two port fuel pump. If you already have a two port pump you should be all set.

A few threads on this that I found doing a quick search. If you spend a bit more time that I did you probably will find a more detailed thread. Good luck!

http://www.914world.com/bbs2/index.php?showtopic=253150

http://www.914world.com/bbs2/index.php?showtopic=245548

[wonkipop]

well it is not really only a case of late cars fit the pump and early cars don't.
its more like you can't get the pump for the early cars.
as @fiacra hints.
unless you have a very substantial wallet and are willing to roam around looking for a fully rebuilt 3 port pump. and they are not cheap if you can even find one for sale.

then you will be real grouchy! (IMG:style_emoticons/default/biggrin.gif)

its all part of the joy of owning a 50 year old car.
a lot of regular parts bit the dust a generation ago.

think of it as driving a model T when the 914 was new.
cause thats the time and technology/manufacturing shift.
half a century.

get into it and smile. its an anachronism to be enjoyed for being out of date and made of bits that are sooner or later going to become unfindable.........except by adaption. (IMG:style_emoticons/default/beerchug.gif)

the simple explanation is you get rid of the T junction that the three ports had that fed back into the return line. modern pumps pressure relieve back through the supply line.
no need for the pressure relief line thats on the end of the row of 3 ports on the old roller cell pumps and goes off to t with the return line going back to the tank.
thats the conversion. its that simple. its not a kit. its a t junction delete.
it won't be hard.

[wonkipop]

an additional tip.

modern fuel pumps are not made of rigorous germanic materials on the interior operating bits. my view is if they shite themselves at some point its down the fuel lines to the injector. i would install a high pressure fuel filter after the pump. the line up from the pump into the engine bay near the battery is as good as spot as anywhere.

this will save your injectors from ingesting whatever a blowing up modern pump wants to let go of.

VW never bothered with a filter after the pump a half a century ago. the old three port pumps could operate at ground zero at hiroshima and still keep going and if they did decide to die as a result they really did not send any material down the fuel lines to the injector, but thats just a precaution you can ignore if you are not worried about injectors.

[Dave_Darling]

The only "conversion" needed to run a late two-port pump in place of an early three-port pump is some hose changes.

Eliminate the "Y" in the return line. Either swap in a straight connector, or change out the hose that has the "Y" in it for a single straight piece of hose from the engine return line to the center tunnel return line.

Make sure your supply hose fits the pump inlet. You might need to fake up an adapter if the diameters of those are different; some plumbing supplies should work for this.

That's basically it for a "conversion kit".

Now relocating the pump to the front of the car (where the later cars had it) is a different matter....

--DD

[SirAndy]

Thanks for reply, car is a 70 and pump was in engine compartment. I moved it up to the same area yours is.

Stupid question, did you convert your car to carbs?
If not, did you replace the plastic fuel lines in the center tunnel with metal ones?

The early plastic lines were not designed to handle the high pressure that the 3-port FI pump puts out.
(IMG:style_emoticons/default/popcorn[1].gif)

[hndyhrr]

Thanks for reply, car is a 70 and pump was in engine compartment. I moved it up to the same area yours is.

Stupid question, did you convert your car to carbs?
If not, did you replace the plastic fuel lines in the center tunnel with metal ones?

The early plastic lines were not designed to handle the high pressure that the 3-port FI pump puts out.
(IMG:style_emoticons/default/popcorn[1].gif)

car is FI and yes lines were replaced.