Fuel pump change to more efficient one

[audi4fun]

Hi guys,

Please advice how to fix new fuel pump into housing. New one is shorter and has less diameter.

Thanks!

[UrS4boy]

You will need to either use a petrol/gasoline compatible rubber spacer or machine an aluminum spacer. Neoprene rubber *might* work (check out its compatibility with fuel). If that is a Walbro pump a) good luck and b) 034 might make a spacer to fit it into the 43 mm diameter basket.

[darkhorse1210]

I have an OEM Pierburg fuel filter for sale....it's OEM for the RS2, so could check if it's OEM for the S2 also if interested?

Tom

[audi4fun]

Thanks. What do you mean with good luck?
This is not Walbro.

[darkhorse1210]

Sorry, I meant Fuel Pump not filter

[UrS4boy]

Thanks. What do you mean with good luck?
This is not Walbro.

Some Walbros, have, well, "failed to function as required", to put it nicely.

[audi4fun]

Thanks for advice. Job done.

[UrS4boy]

Thanks for advice. Job done.

If you machined that spacer/retention ring and the pump works better than stock, i.e. more flow and more pressure, you might have a market for making more.

I take it the second pump retention clip broke off your basket: