Fitting Denso 550Cc Injectors

[HG20DET]

g'day,

i just got a set of denso 550cc injectors off ebay for my rb20det. the part no. is 195500-4460, and it said in the ad they were to fit and rb20det.

however i have pulled my old injectors out and the new ones are quite a bit shorter, so the bottom of the injector only just sits in the hole.

Would this be ok? Has anyone used these injectors before?

Also the came with some rubber 0-rings, not the ones that go in the fuel rail, but slightly bigger ones, i'm guessing these go on the bottom of the injector around the skinny bit?

Can anyone tell me if this is right?

And lastly, are injectors polarized? I'm guessing it doesn't matter which way around the wires go when changing the plugs over?

Any help will be appreciated, cheers.

Pat

[Randon_I_Am]

That sux dude! hope they don't need fuel rail adjustments or some shit!

Not sure about the polarity... did they come with new plugs to solder on?

[HG20DET]

it's weird because i've seen some denso injectors for sale that look exactly the same as the original rb20 injectors but they are a different part no. and when i search my part no. in google it comes up with mazda rx-8 mainly...

yeah they came with new plugs, but the wires on the new plugs are both black with no markings, so i just started soldering them so the pins are the same as the original plugs...

[Randon_I_Am]

Oh shit dude! are they the wrong ones?

Go back to the seller and start asking questions. that sux!