Injector question

[shark_90]

I've bought some injectors that were thought to be RS2 spec for my RS2 conversion. I've just done some research on them and so far this is what I can find:

380cc/min at 3bar with a 16.5 to 18ohms impedance made by Lucas

I know the RS2 injectors are 440cc/min but is that at 3.8bar or 3.0?

If it's at 3.8bar then I guess these 380's are useable?

Thankyou oh gurus of all things 5 cylinder

[shark_90]

So it sounds like they could well be useable. Better have a word and see if Paul can cater for them.

[S2central.net]

Nuhh... Proper Bosch GREEN are rated for 440cc at 3bar (43.5psi in old money as the standard pressure for quoting these things).

An ABY/AAN FPR is nominally 4.0bar so you need to do quick math for flow rate at that higher pressure.

These lucas jobs might be usable in a conversion but different fuel map will be required if it doesn't perform exactly like RS2 / Bosch green injector...

[S2central.net]

If you look on line you'll see lots of references to Bosch Green - either rated as 42lbs/min or 440cc/min - both those figures are referenced to a 3bar rail pressure.

Running at 4bar we get a higher pressure of 440/[sqrt(3/4)] = 508cc (or 48lbs if you prefer).

[Trankelstein]

I just want to follow up with a question on this, are there any bad sides to remaining with the ABY FPR after upgrading to rs2 spec injectors and more if yuo are going to do a custom remap anyway?

[S2central.net]

I don't think it really matters - we are talking about 0.2bar difference. The ABY/AAN FPR has the slightly higher pressure so you have a slightly richer mix at WOT than with RS2 FPR. In cruise conditions the closed loop lambda adaptation levels everything out for nominal stohic mixture.

Paul