Where to get technical specs for.... Mk1 Gti fuel pump

My whole fuel pump/accumulator/associated pipework is all rotten and started to leak! Finding the whole lot brand new seems excessively unlikely. Used is an option, but I'd rather replace it all…

Anyone know where I can see tech specs of oem fuel pump for Mk1 Gti?

(Or let me know what pressure it supplies)

So I can decide what pump to get to replace it with (Will replace fuel pipes between fuel tank and fuel metering head at same time)

TomGti said

 Finding the whole lot brand new seems excessively unlikely.

Its only unlikely, if you don't look! The standard VW parts are readily available. If you flick through Practical Classics, you'll see 5 stars next to parts supply, or whatever.

10 bar 750cm3/min I think….you'd need to match up the fittings too.

Practical classics?! My car's older than I think I am! Will have to grab a copy for reference… I go straight to G+S for parts and if I can't get it, I can't get it, lol…

10 bar - blimey I'm surprised… The fuel pump next to rear right wheel next to accumulator yes?

I'd be shocked If I could get a new set of pipes and pump and accumulator for less than the price of replacing the lot - unless the pump really is @10 bar… That's more than I expected.

(AFAIK, the fuel hose I get from the local shop is 10 bar - even for carb applications… never understood why)

You will not find any "aftermarket" pump for less then a factory replacement pump (Bosch and some others). I have seen a few "racing" pumps for high powered large displacement engines with enough pressure, but they cost more then an OEM style replacement. Flow is not the issue as almost any pump will flow enough to make 300hp, that's an advertising gimmik as it is easy to obtain the require flow. For CIS systems pressure is the key as it operates with high pressure. The injectors open at around 35psi so you need that at a minimum at the injector tips to keep fuel flowing. The CIS pumps vary a little, but most are rated at around 85psi (about 6 or 6.5bar). Without a book handy I would say the 750cm3 listed above is the minimum at 12 volts when testing flow.

There is a company on the Internet from the UK which sells replacement pumps at a fair price, but I can't recall the name right now.