Hi,

I have a cossie 2wd that runs 1 bar and a switch that increases boost to 1.5 bar.

I was wondering ( as I picked up the car already modified ) what was standard boost on this, and what is a reasonable modified boost.

At the moment all the oil seems to be pushed out of the block on 1.5 bar and leaks bit by bit on 1.0 bar

It already has a modified oil catcher with a pipe coming from the top of the rocker cover, and a modified head gasket for higher boost.

Am I running too much boost ?

Thanks

Paul.

 

Depends on the chipset fitted to it.

Thats far more than stnadard boost, but most cossies now have a chip on them anyway.

I run mine at 2.2 bar and it loves it, on a standard engine (different turbo and chipset and injectors etc of course)
so its certainly possible if well set up.

 

Standard boost was around 0.7 bar.
Maximum boost also depends on what map sensor you have - Aps02 or Aps05?
With Aps02 the maximum is 1.0 bar, because the map-sensor cannot measure above that.
What number or color are the injectors?

 

The only number I can see on the injector is

0379 402 and they are yellow.


How can I tell what map sensor I have ? Sorry, I am learning in on these cars, and its doubly difficult as I didnt modify this.


Thanks
Paul.

 

Yellow injectors are standard and I am suprised your car even runs. If your running high boost your car must have had a remap as otherwise you will not be able to see that boost. Basically by looking at your spec you should have 3 BAR MAP sensor, uprated injectors typically greens and a chip and an uprated actuator.

The injectors as with all the components are specific to your software and can NOT just be hot swapped so be sure you know what your software is programmed for then buy the correct injectors for that chip. If you dont have this information on paper best bet is to remove ECU, dismantle and look at chip and it is usually stated on this.

Your MAP sensor is 3 BAR as you said you run 1.5 BAR of boost and a standard 2 BAR would not be able to see this.

Does it run ok on boost as it must be running lean at the moment which will destroy your engine.

The switch just cuts the boost control valve power and hence you can run lower boost.

As for the leak have you checked all seals and made sure breather is not clogged?

Martin

 

IMHO you shouldnt be driving that car again until its been looked at, unless it happens to have a gunship chip or similar, its highly unlikely to be fuelling correctly on yellows!

 

You are right you It must have 3 bar map sensor as I have just understood what injectors they are, as they are not the standard bosch yellow, they are :

Yellow Weber injectors. Part No's on injector IW-025

and the car runs fine on 1 and 1.5 bar boost, apart from losing oil.

So, looks like its an engine issue to solve the oil leak. Is this usually piston rings ? i.e. pressure blowing by the pistions and pushing the oil out. Too much for the oil breather to handle ??


Thanks

Paul.

 

Yes if its breathing heavily its normally the rings at fault.

 

Standard yellows ARE weber and not bosch. Its possible that you may have a chip to retain the standard injectors, but get it checked out by a reputable tuner.
YB's are too expensive to fix properly if they go bang and it's not worth running the risk imo.

 

I wish I could. I am in italy, and its very hard to find a reputable tuner. Easy in the UK with all the forums and internet sites that all the tuners have. That sort of thing just doesnt exist here.


Thanks to all for the help.

 

Have a look inside the ecu and see if theres any marking on the chip that you could trace?

 

If its fuelling right, the timing is probably right realistically.

So just put a wideband on it, and see what the fuelling is doing.

 

Standard Weber injectors can handle about 260-270bhp at the standard fuel pressure.
A good chip only needs 1 bar of boost to reach 260bhp.
Either the chip is setup badly and needs 1.5 bar to get some results or your engine is running lean as hell OR your boost gauge is fooling everybody.
Is this a aftermarket boost gauge clearly marked showing pressure in bar of is this the standard Ford boost gauge?
How much boost is your boost gauge showing at a) engine off, ignition on and b) when the engine idles?
How to tell which map sensor? Measure the voltage on pin 15 with a digital voltmeter with the ignition on and the engine off.
A 2-bar sensor will have around 2.2 volt.
A 2.5-bar sensor (Std Escort Cosworth) will have around 1.8 volt and
a 3-bar sensor will have around 1.5 volt.
You can reach the pins by removing the top half of the connector to the ecu.
Unscrew at one end and clip the wrap at the other end.