Hi guys, currently getting my RS ready for chipping and think it would be an idea to replace the fuel pump as a precaution. Was wondering how much im looking at for one from Ford? cheers guys
Danny

 

Get an uprated one form amber performance mate
£130 last time i checked.

Cant go wrong then as it will take more strain over the standard
one.

Plus fraud will pull your trousers down anyway

 

i got quoted £189+vat from ford.

so just got one from amber for £130

 

isnt the std rs turbo one under more strain than the cossie one as the rst one needs more pressure than the cossie,theres no uprated one for the rst unless your runnin aftermarket management

 

I was mentioning the uprated one mate, and yes the cossie one will be under less strain, thats why i said you cant go wrong with them

Not sure i follow you with your uprated pump if you only have management

 

bosch 044

 

Bought mine today..£87 off E-BAY...Matt lewis.At ford they are £125.

 

right the rs turbo pump puts more pressure on the pump than a cossie would put on a cossie fuel pump,thats why i said the cossie one will not really last long as its under more strain than it would on a cossie,where as the rs turbo one is designed to take the strain,cossie one isnt,think its something to do with pressure to open injectors or something like that,so puttin your cossie one on when its not designed to take the pressure will do nothin in terms of performance etc,the cossie one flows more fuel but is no good on a rst with mfi,where as puttin an uprated pump on a car with aftermarket management you can get a gain from it as the mfi isnt restrictin the fuel that can be flowed

so to summarise,if its on mfi replace it with a std rst pump if its on different management then you can replace with an uprated item

reason i know this is because i had a cossie fuel pump on mine and wasnt any good for gettin the power i wanted from my car,so new rst pump was put on,spot on

as for thinkin cos its a cossie item it must be better thats not true,for example a cossie one take 5 bar of pressure to open inj where as the rst one takes 8 bar of pressure(these are examples not fact)
therefore puttin the cossie one on when its not designed to take the pressure is just gonna reduce the life of it

 

Jambo i like your thinking I rang MSD today to enquire and was told an uprated one can only be a good thing? So as is usual with the RS scene, everyone has a differnet fucking opinion I hate this tuning malarky, so hard to know who to trust

 

cheers matey, just ordered one from him

 

Karl at Norris Motorsport told me to put a standard Cosworth pump on my Series 1 RS Turbo

 

Thats almost complete bollocks mate.

An RST runs 6 bar fuel pressure all the time and needs 3.7 bar to open the injectors. A Cossie can run anything up to around 2.5 bar boost pressure which in turn will increase the fuel pressure up to 6 bar. The Cossie needs 12 volts to open the injectors. They will fire in any fuel that is under pressure.

The Cossie pump is exactly the same pump physically to the RST pump but with a higher flow rating at the same test pressure (5 bar).

You are sort of right saying that the pump is under more strain on an RST than a Cossie, but the pump itself is built to take the kind of pressure these systems require. Although the Cossie pump will provide more fuel at the same pressure than an RST pump.

There will be no issue with fitting a Cossie pump to an RST.

 

cheers for clearing that up
so what happens to the extra fuel thats flowin thru the cossie one at the same pressure,when it reaches the meterin head,does this not change the pressure as a cossie hasnt got this restriction
if it takes 3.7 bar to open the injector on a rst pump and at 3.7 bar on the cossie pump,surely it flowed more fuel then,so would it not get blocked by the mh and up the pressure again
just curious mate to find out

 

The excess pressure created by the pump is returned to tank by the pressure regulator, as it is on a standard pump.

It just means the cossie pump has more potential for higher fuelling without the risk of running lean

 

ahhhh wel, standard one will do me fine im sure, hardly as though im going to be running a massive amount of power

thanks for the insight though guys, more knowledge in the head

 

Just don't say we didn't tell you so when you're power hungry

 

Safechav answered the question.

Any excess fuel is returned to the tank, hence why we have fuel return pipes fitted to fuel injected cars.

 

cheers