3b s2 coupe resurrection

[andy10v]

And as far as I can see the red band Delphi injectors I got as rs2 compatible injects are 440cc at 3 bar.

[andy10v]

so you have 10% too much fuel?

More I think, 440cc at 3 bar, they are at 4 bar as 7a fpr fitted.

[andy10v]

440cc at 3 bar is 508cc at 4 bar

[Error404]

ah! In that case the technical approximation would be "**** loads too much"

[gmac78]

I would like to sell the turbo complete, but if I cant I will give you first refusal on the hot side.

Ok Andy no worries, thanks.

[andy10v]

Fitted the 3 bar fpr, and it goes like ****, pulls 27psi ish. Only got to floor it a couple of times due to traffic and had to get back to fit new track rod ends/adjusters to my sisters car.

So need to get proper RS2 injectors, or a live map.

Glad its worked out though!

[K Simmonds]

RS2 injectors are

360 cc/ min @ 3.0 bar
405 cc/ min @ 3.8 bar
416 cc/ min @ 4.0 bar

That's useful to know,.

Really glad you've sussed it out, must have been running pig rich at over 500 cc/m, it's good that you've sorted it sooner rather than latter.

If I was you I'd get a set of RS2 injectors and be done with it, given how hard it is to get a 3B lived mapped. It could be worth asking PRJ for a copy of my software, just been out for a little a spin, forgotten how indecently fast she is after a week driving a G60.

[andy10v]

Yeah, 508cc v 416cc Now 440, so still 24cc over, but miles better.

Acceleration is now brutal!

So sensible hat on, I need RS2 injectors as you say. Oil change as it will be full of fuel, and a bigger oil cooler as the temps rise quickly on boost!

[K Simmonds]

Acceleration is now brutal!

That's more like it!

It'll be even better with the right injectors, my AFR's in the low 10's on WOT so that 24 cc is probably still putting you in the 9's. As you say the oil needs changing ASAP, be good to do anyway on a freshly built engine that's been stood for while to flush it out.

My oil temps are good with a 13 row oil cooler and now I've fitted that alloy rad the water temp seems more stable.

[newsh]

That's a great bit of detective work Andy, well done that man

Do you still want the leads and coil? I've found them but not posted yet.

[martinws]

Good work dude. Would be useful to get a wideband for general reference. I have been running a borrowed on for the last week while messing with the NOS and it shows the way the fueling goes on and off throttle and load.

[andy10v]

I just ordered one, should be here on Wed.

How are you getting on with the nitrous?

[andy10v]

That's a great bit of detective work Andy, well done that man

Do you still want the leads and coil? I've found them but not posted yet.

Combined effort from my dad still muttering about carbs, and me

If you are not going to use them they will be handy spares, and I said I would buy them. No desperate hurry right now (until it develops a high boost missfire when I get the right injectors in )

[newsh]

Ok buddy, I'll get them in the post then

[andy10v]

Some goodies arrived today

Wideband



Oil cooler (but no M18-1/2 adapters )



Going to go somewhere about here



Gauge stuffed into a vent as per usual bodge



Sensor is welded into the exhaust just after the bottom of the downpipe, instructions asked for at least 36" from turbo.

Changed the oil/ilter and took her for a quick spin;

Cruising at 30 in 3rd 14.7-15.6ish, leans out on the overun

High speed cruising seemed to be richer 13.X

WOT pegs at 10 the whole time

Idle is very rich.

RS2 injectors are on their way from a forum member in Lithuania