Twin Webber 45S

[hillbilly 3]

can you use the standerd fuel pump on a 1.9 gti to run 45s

[Matteo 17 1 Cars]

No, carbs need a low pressure fuel pump.

[calvinhorse 870]

Mine basically runs the injection pump, the oe lines make a loop with the filter on then 'T' off into two adjustable regulators to get it down to 2psi

 

It works and is simple

[Crescent205 11 1 Cars]

Yes a std injection pump is fine, and in fact a whole lot more reliable. You dont need the 2 regulators, you simply need a turbo regulator which can bring the pressure down low enough. This is the one http://www.demon-tweeks.co.uk/performance/fuel-pressure-regulators/malpassi-fuel-pressure-regulator-for-turbo-carburettor You simply come off the std filter into the reg then out of the reg into the carbs and put your return on the bottom of the reg.

[hillbilly 3]

So the one in the pic is the one i need?

[calvinhorse 870]

Dunno, it says 60psi down to 5psi everywhere I have looked says you need 2psi

 

Infect mine runs the filter king version of the above pump in the injection circuit then another filterking regulator with filter after that

Edited October 14, 2013 by calvinhorse

[Furyblade_Lee 2]

What sort of power gains would 45's get on an otherwise standard 1.6 / 1.9?

[dcc 855]

minimal gains on an otherwise standard engine.

[Crescent205 11 1 Cars]

Yes the one on the link and the pic is the same one that ahs been on my rally car for 8 years! i've also had std road cars on carbs with the same set up and pressure is fine.

[Reebmit 51 4 Cars]

Mines on 45 dellorto's running a filter king with standard injection pump, just perfect. I really like 45's having had them on all sorts over the years, I always run about 2.5 - 3 psi.

Edited October 21, 2013 by Reebmit