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Rb26 Running Rb25 Peripherals Ecu,cas,afm,tps

HYBRID VL
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HYBRID VL Community Regular

HYBRID VL

Posted
Posted

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?

GTRNUR Grand Master

GTRNUR

Posted
Posted

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.

HYBRID VL Community Regular

HYBRID VL

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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.

045HOW Mentor

045HOW

Posted
Posted

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.

mad082 Grand Master

mad082

Posted
Posted

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.

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