Ca18det Injectors Into Rb20det

[47une]

Hi all,

I have two sets of CA injectors laying around, and can get them cleaned and flow tested very cheap. I have searched for ages and only found two posts about this upgrade but they didnt answer either of my questions.

1. Will I need a GTR resistor pack even thought I will be running a Power FC? (my mate with a Wolf didnt need one cause he could just select low impedance injectors through the wolf)

2. What kind of power will the CA18DET injectors flow to considering they are 370cc? (read somewhere that the 270cc RB injectors being on a six cylinder = 270hp??)

[QWK32]

if you use a rb20det power fc then yes, you will need the resistor pack. wolfs can run either like you said.

thats right, stock rb20det injectors are 270cc. 370cc injector on a 6 cylinder works out to be about 260rwkw.

[47une]

Ok, so we have the power question answered, but here comes the tricky part, I will be running an RB26DETT Power FC on my RB20 so will I still need the resistor pack?

[QWK32]

Ok, so we have the power question answered, but here comes the tricky part, I will be running an RB26DETT Power FC on my RB20 so will I still need the resistor pack?

oh ok. you should be able to do that.

Edited November 10, 2007 by QWK32

[47une]

Just doing some more research and I have found this bit of information:

(http://www.skylinesaustralia.com/forums/lofiversion/index.php/t62674.html)

Quote:

The only problem is the resistance of the GTR 444cc injectors, and the difference to the std RB20DET injector. From memory the GTR injector is around 2.5ohm. The std RB20DET injector is around 12ohm. So running the the re-written ECU or an Apexi Power Fc with the injectors will damage the ECU unless the impedence differences are addressed.

Funnily enough the GTR ECU also needs to see a high impedence just like the RB20 ECU. However it gets away with using the low impedence 444cc injectors by using a ballast resistor from the factory. If you want to use the GTR 444cc injectors with your RB20 then you will need to get your hands on this ballast reistor as well.

[salad]

I dont think CA18 injectors will flow 260rwkw, as that's around about what the 440cc GTR injectors flow. Simple math says the CA18 injectors will flow close to 220rwkw.

The other alternative to using the GTR resistor pack is get your hands on an MR30 resistor pack. I got mine for $5.50 with the plug and have been running my GTR injectors in the RB20 for close to 6 months now with the standard remapped computer. No issues

Cubes is also doing the same thing

[Simon-S14]

simple math must be wrong then, cause stock injectors can flow 220 rwkw even 230 rwkw... i'd be inclined to say that the CA ones would be like RB25 injectors and flow around 250 rwkw ish before riskin a lean

[salad]

Dont forget you were running increased Fuel pressure and the tuner was pretty worried about it.

[Simon-S14]

hey bucko i thrashed the RB20 harder then most ppl do, and it never had any issues

i still reckon the CA ones will do 250 easy... i was looking into it for my rb20 but ended up getting a 25 instead

[huddy]

i was making same power as simon on standard rb20 inj - with no fuel reg... for a year... had no dramas - i'll be finding out how far i can stretch the gtr inj with a FPR soon though :S

[47une]

Thanks for all the help guys.

What is this about a MR30 resistor pack? What year model and motor is that one from? Thanks.

[47une]

Thanks for all the help guys.

What is this about a MR30 resistor pack? What year model and motor is that one from? Thanks.

[Simon-S14]

MR30 l;ocally delivered skyline with the shitty L24 6 cyln "efi" motor in it... many wreakers woud have em