Down and out in 2008

[owdlvr]

Originally Posted by Wally

Hey Sandeep,

I would (and have) just get a Bosch 044 pump and be done with it.

x2 on the Bosch 044.

That pump also has a 12mm (1/2 inch) inlet size, so now you also know what the feed line internal diameter has to be.
High pressure line can be 8mm. What this means in AN size, I dunno, but you will probably figure it out
I would get a high pressure filter and mount it on the pressure side with 8mm fittings, like porsche does also.

Walter

-6 is the closest AN size to 8mm (it's technically 3/8", which is roughly 9.5mm). I would run -6 line and not worry about it. Russell makes an aluminum fuel line that can be combined with their aluminum fuel line adapters for the easiest line-to-AN combo. No flaring tool is required. Part number 639480 for the natural finish line (also available in black, red and blue) and 639210 for an example of the fitting end (also available in swivel end as well as black/silver instead of red/blue).

034Motorsports has tested the 044 and found it does 265Lt/Hr @ 55lbs and 255Lt/Hr @ 75lbs.

Inlet is 18x1.5mm, outlet is M12.

-Dave

[Humble]

I've got the 044 bosch pump on the race car @ 50psi on 750cc injectors and it's both quiet and capable. I've got a -8 feed line from the tank to the pump, -6 high pressure out to a filter, then -6 to the motor. I'm also running a -6 return back to the tank to make things easy.

You could probably get away with using -8 from tank to swirl pot, -8 from swirl pot to pump, and then -6 for the rest of the system like I did with out issue. It's only when you get into truly ridiculous hp numbers and 1000cc injectors that you will need anything more than a -6 feed line.

[petevw]

I agree. Use the Bosch pump and plumb it -6AN. I believe the pump is also from a CIS MK1 VW Rabbit. I ran one with the EFI’D 2332. Maintained pressure well. I didn’t have a swirl tank, didn’t know any better back 10yrs ago. I ran my return line to a “tee” fitting just before the pump inlet. So it would cavitate once in a while. Mine was noisy because it was solid mounted to the pan. I think the CB EFI pump is that same Bosch unit as well, but they wrap it in a thick rubber sleeve.

Remember, get some 2ear clamps:


Or plumb it all with AN fittings. Performance Improvements has all the AN stuff on sale this week.

Pete

[Sandeep]

Thanks for all of the feedback. Looks like a 044 is in my plans now along with some AN hardware.

More pics when the fuel system has been completed.

Sandeep