rb 20 maintenance

Discuss the RB20, RB25 and RB26 series engines.
ben h
Posts: 46
Joined: Sun Oct 13, 2013 3:45 pm
Car: 90 240sx with ls1/t56

Post

iv googled it but havent found exactly what i want to know iv had this car for a few weeks and water pump just went out so wile im in there doing that planned on replacing my timing belt and stuff but what els should i replace wile im there
also what are good brands to go with found this kit that comes with a belt and waterpump and a greddy kevlar belt for 324 but wondering about others to
http://www.z1motorsports.com/240sx/prod ... 5{297}1948


other then that car only has a few other problems high idle that i dont know how to make it go down idles between 2-3k roughly and then after its warm it gets a missfire iv read that can be the icm? my plugs that go into it are kinda broke were can i get pigtails for that or even maybe a new wireharness so i could eliminate any wiring issues i may run into its in a 90 240sx
thanks for any help now let the flaming on the noob begin


Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
Contact:

Post

part number 21010-21U26 it's a RB26 pump that fits RB20-RB26. That kit from Z1 is a good deal too. You might need a new gasket for the IACV or the TPS is dead or need to be set right. You could also need to coils or try and clean them up. Regap the plugs if the gap is too big on them.

ben h
Posts: 46
Joined: Sun Oct 13, 2013 3:45 pm
Car: 90 240sx with ls1/t56

Post

ok i did a lil reading on the z1 pump but few said it was better and a few said it wasnt so i wasnt sure if i should go with that one or not and ok ill get a new gasket for that and wat plug do i test on the tps for the output signal to see if its good i think its .49V that u want right?

and i planned on doing the ls2 coil pack conversion cuz i think my missfire once its warm is cuz of my ignitor

Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
Contact:

Post

the tps setting is the same as the SR20DE or DET if I remember right. I would also change the heater hoses coming from the block on the RB20. The one that goes to the heater core of the rear of the motor is a huge pain to deal with when the motor is in the car. Might be better just to change them all while you have the motor out.

ben h
Posts: 46
Joined: Sun Oct 13, 2013 3:45 pm
Car: 90 240sx with ls1/t56

Post

I dont have the motor out guess I kinda made it sound like that

Yellow4g63
Posts: 3718
Joined: Mon Jan 20, 2003 6:07 pm
Car: 95 Nissan RB20 240SX RB20
91 Nissan NX2000 VE power
95 Nissan 240SX Stock
Contact:

Post

if you have the stock intake manifold it won't be so bad to change them.


Return to “RB20DET / RB25DET / RB26DETT Forum”