rb20 injector question

[wyostunta]

hey guys i have an rb20 and the injectors are bad and i need new ones but cant find the stock size anywhere? mine that were in the engine read A46-000 0J50 4603d with a tan or yellowish top. does anyone know wher i can get new or does everyone just upgrade to a bigger size flow which requires new pump and fuel rail and more which means big dollars. can anyone help me with my question. ive tried napa and others with the old 300zx and rx7 which arent even available anymore so im at a loss.

[cachanilla86]

The stock Fuel Injectors are 270cc, a friend told me they are the same as for the KA24E...those work well up to 12 PSI, so if you don plan to put over 12 pounds of boost, you can still use the "original" injectors.

[preston240sx]

nahhh ka24e are 260cc i believe they would work to get it running but the real my real question would be why are ur injectors all bad?

[wyostunta]

The plastic outer coating on 3 of them are cracked. Two of the tips on the end of the part that sticks into the intake are cracked another one is broken and another one has a bad o ring allowing air by.

[sci2000tech]

I was always under the impression RB20 injectors were identical to KA24E injectors

In fact, I'm almost certain 4 of the injectors in my motor came from a KA24E.

[Sil240]

I'm rocking KA24E injectors right now.If they are 260 or 270 that 10cc shouldn't make much difference. Just don't push them to the limit.

[TECHLINE08]

put two cans of 44k in the gas tank, drive then let it sit.

[Sil240]

What's 44k?? Some kind of injector cleaner???

[wyostunta]

yea its an engine and fuel cleaner. a mechanic i work worth swears by it. ive decided to sell my entire rb20 setup xcept crossmember and rearend. so if anyones interested. ill be posting in classifieds in a couple weeks prob when i can get away from work

[TECHLINE08]

i just fixed a customer's Xterra using 44k, he ran out of money after the timing belt job i told him its worth a try. The injectors had a soft dull sound, after driving and letting it sit over night, miss fires went away alpha was normal, cost 10 bucks