Jump to content
SAU Community

Recommended Posts

hey guys

i have a rb25det powered 180sx but the engine has dramaz, so i was gonna get e rb20det jus to chuck in to get it running...

jus wondering if the loom is the same, can i put the motor in, plug up the loom, put in the rb20 ecu n drive away, or is there differences

if so what are the differences???

plz help asap as i need it runnin in 2 weeks

thanks in advanced

cheers

ryan

0410332673

jus wondering if the loom is the same, can i put the motor in, plug up the loom, put in the rb20 ecu n drive away, or is there differences

looms are different, as are ancillaries and sensors. For example the injectors and PTU all need to be rewired. You'd be better off sourcing a second RB25DET.

Personally, i think by the time you get the RB20 running properly you would have spent nearly enough for another 25. You already have everything on the 25, just get another RB25 block (and head if its not in good condition) and swap it. Thats the most cost effective alternative. Dont downgrade man, never take a step back i say.

Personally, i think  by the time you get the RB20 running properly you would have spent nearly enough for another 25. You already have everything on the 25, just get another RB25 block (and head if its not in good condition) and swap it. Thats the most cost effective alternative. Dont downgrade man, never take a step back i say.

Yeah that's what I meant, an RB20DET is like $1200 and an RB25DET is like $2200 these days. By the time you're done f**kin around with the wiring and the parts to fit the RB20 your $1000 saving will have dissapeared, so you're better off just buying a bare RB25 (as you should have the throttle body and manifolds already) and simply dropping it in.

If there's no engine in the R33 right now then put the 1JZ in there... just for shits n giggles :D

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • It is a kunfine Android screen . Does anyone know the wirering diagram of the fuga ??
    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
×
×
  • Create New...