Jump to content
SAU Community

Recommended Posts

Is possible for me to install an RB26 engine and run all the RB25 things like Fuel rail,CAS,ignitor,AFM,ECU,TPS or intake would it run like an RB25 with an extra 100cc?

your probley asking why would you but this is just a "can it be done" sort of thing also would get an ECU tune board.

Thoughts?

No.

The intake and exhaust manifold stud paterns are different. The ports on the manifolds don't line up either.

You can put the crank, rods and pistons from an RB26 in an RB25 block though. From the outside it will look like a 25, but will be a 26 with VCT.

ok i understand that the RB25 injectors use side feed and the RB26 use tail feed thats fair enuff but couldnt i use the RB25 rail?

i also know about the stud patterns on the manifolds the exhaust isnt a big deal as there is no electronics on that part in take is similar in this aspect only really TPS and im guessing i could get a plate to use the RB25 TB on the RB26 inlet.

Also depending on what turbo i use intake air amount might not be an issue atm.

all im saying is that the only reason you need different coil packs for different models is because they are made to fit different looms.

they are all the same. they provide spark to the plugs, so on that front you can use your coilpacks on your loom in a 26 but as for the rest of the hoo-ha i do not know. maybe asking simon s14 or GTSboy.

the rb25 ecu is very picky when it comes to airflow, so there is a very good chance it will pack up it's bat and ball and go home when trying to run the 26.

also the rb26 runs individual throttle bodies, not a single like the 25, so you would have to see if the 26 works with the 25ecu (even if you have to wire a different plug on the loom). you also have to hope that the knock sensors are the same.

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

    • Could someone post some pictures of the factory Jack , tools, spare tire and how they were in a 1998 ER34 2 door skyline originally?
    • UPDATE: Hi all!  As we are getting towards the end of this thread where I’ll showcase final dyno numbers and graph, I wanted to provide an update. Tao from HyperGear has done an amazing job building the custom divided T3 housing for the G30. Communication was flawless, price was great, and now the housing is estimated to arrive in 7-10 days! Very very pleased. I must add, if someone is looking for an affordable turbo and end up reading this thread, I would recommend HyperGear. Genuine brands are the way to go as their proven reliability, predictable performance, and there’s a plethora of information available for specs, flow, and more. This HyperGear recommendation is based on their excellent communication, dedication, and willingness to listen to their customers. I particularly liked their ability to create custom adaptations tailored to specific needs, which is a HUGE benefit over other brands. And if we consider the HyperGear provided dyno results, it adds reassurance knowing their turbos can compete against genuine brands. Next update will be after the dyno!  
    • I've previously seen people post up "dress up bolt kits" for RBs but don't remember seeing them specify the full contents. I can only really suggest you grab the verniers and start measuring, and keep in mind the cam cover and timing cover bolts are both quite specific with a wider unthreaded section where the bushes sit, that will make it hard to get aftermarket replacements which tend to be all thread (set screws) or for longer bolts a flat section with a shorter threaded section at the end
    • I believe there was a similar one posted by @duggyphresh. They were re-routing their battery positive cable in the way I am also trying to achieve. Sorry, I’m new to this forum, so was a bit late to the party by a few months and so reignited the old thread, as I wanted to know how they got on with doing it.
×
×
  • Create New...