Bosch Motorsport Fuel Pump's No. 2

[s2avant]

I'll look into it more when I get home tonight but I don't think the Avant tank does straddle the propshaft as much as it would seem. I'll dig through the workshop info and see what i can come up with. I'll pull up the numbers for the fuel pump tools too. I know they're not cheap but might be useful to get a set for my special tool library :mischeif: . (which reminds me I want my subframe tool back from Tom C)

The pump does sit in the lowest point in the tank on the same side as the filler neck.

Ben

[Greg_S]

@Lee,

Looks like it will be fine for the avant's as well as the coupe's.
But if when you are fitting it that it doesnt sit low enough you can fit in the same way doug & mark have. The reason that I didnt was because it puts alot more stress on the basket which may lead to it breaking in the long term.

Greg

[Doug_RS2]

How does it put more stress on the basket? You cut it, so it is not stressed and use a cable tie to keep it inplace - if anything it keeps it more secure.

[Greg_S]

Possibly, it was just when i did it and using the pictures of yours cutting grooves in the same places it seemed to put more stress onto the basket which is why i decided to do it slightly differently.

Greg

[s2avant]

Cool, jsut want that one checked as I know the avant tank is a very funny shape. It sits on both sides of the propshaft so I am not sure how it gets fuel from both sides. Maybe a syphon tube of some description.

I've had a look at the workshop info and aside from some covers the tank is as shown in the diagram below. It isn't a 'saddle' tank like the ones in later quattros and 4Motion cars. The area the pump fits in uses the same attachments as the coupe so I believe the fitment will be fine.

Ben

[s2avant]

This is view from below

Ben

[s2avant]

Here is an exploded view of the standard pump setup (not S2 specific so ignore the fuel pipe attachments at the top of the pump)

Ben

[s2avant]

and the version used for the bosch pump (again not S2 specific so ignore the fuel pipe attachments at the top of the pump)

Ben

[Lee]

Oh, OK. I just thought I saw parts of the tank either side of the prop when I was replacing that damn fuel filter. Looks like I'm in the group buy then! When are you ordering Greg? Are you waiting for more people or is that it? I'll send a cheque to your pops. Will I be getting a VAT receipt too?

Look where that PITA of a fuel filter is located. Designers were having a right laugh when they came up with that one.

[s2avant]

I thought it was a saddle tank myself until I actually bothered to look on the computer.

They don't even list a procedure for changing the fuel filter. From the manual though apparently you can remove the tank without dropping the rear diff or driveshafts. Not sure I can work out how that would be achieved.

Ben

[Greg_S]

well it is due to go ahead on the 15th, once everyone has paid will get them ordered up, should be able to get a VAT receipt done. will speak to my dad for that.

Greg

[Jonas_R]

Well i'll have to pass Greg. Seems that the buyer for my carbon list decided not to buy them, so no money for me

Sorry for the trouble.

/Jonas R.

[Sweeper]

May I ask a stupid question. How much bar is this pump pumps ? 5bar 200l ?

And do I need a new pressure regulator ? for how much bar

Thanks.

[Greg_S]

there is a 5 and an 8 bar version. the 5bar one is rated at >200l/hr

[Sweeper]

Greg: So what about fuel pressure regulator ? Do I need new one ?