Jump to content
SAU Community

Rb25 & Rb26 Cams Chasin Specs

ELMOHASA33
 Share

Recommended Posts

eeiko321 Experienced

eeiko321

Posted
Posted
JUST WONDERIN IF ANYONE HAS STANDARD CAM SPECS FOR RB25DE RB25DET & RB26DETT AT A QUICK GLANCE THE RB26 CAMS LOOK AS IF THEY WILL BOLT INTO A RB25 HEAD HAS ANYONE DONE THIS WHILE RETAINING V.C.T AND WHATS THE POWER GAIN ROUGHLY

No i beleive there wont be much gains with this excercise....

The Camshafts look simillar but i beleive that there is a slight difference when fitting.

Apparently the VCT must be removed as well as slight Valve length adjustments/modifications will be needed

so its not a direct bolt on.

lifters on the Rb25 causes the differences with the Rb26 tappets

the

your better off buying a Tomei Kit than wasting it on Rb26 camshafts

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
JUST WONDERIN IF ANYONE HAS STANDARD CAM SPECS FOR RB25DE RB25DET & RB26DETT AT A QUICK GLANCE THE RB26 CAMS LOOK AS IF THEY WILL BOLT INTO A RB25 HEAD HAS ANYONE DONE THIS WHILE RETAINING V.C.T AND WHATS THE POWER GAIN ROUGHLY

Have a search - there was a thread a couple of weeks ago in FI, and i also locked a thread about the same thing tonight

Long story short, not worth it

Guest
This topic is now closed to further replies.
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      RB26DETT Sketchy boost mod?

      By GTSBoy · Posted

      There's restrictor pills in the stock boost control hoses. That's how they set the amount that was bled off and hence the "high" boost setting. The usual mod in the day was to remove it and send the "high" boost setting up to about 14 psi.
    • ARB26
      RB26DETT Sketchy boost mod?

      By ARB26 · Posted

      Thanks Duncan, that's the best info I've read. Furthermore after learning about the PCM programming side controlling the factory boost solenoid, the purpose of the solenoid is to "bleed" boost when pin 25 is earthed, thus allowing spring pressure in the wastegate actuator to overcome diaphragm boost pressure, thus closing or reducing the position of the wastegate flap creating more boost as the turbo is able to spin faster. It's pretty cool to see a designated Pill to do exactly this, would have liked to have seen it with a tiny filter over the end for those moments in vacuum.  The constant bleed pill has now been removed completely from the system and solenoid boost control has been restored once again.   Case closed 😂
    • GTSBoy
      Cas issue

      By GTSBoy · Posted

      The wideband reading is meaningless if it's not running. Why are you using shitty old sidefeeds on any engine, let alone a Neo? What manifold and fuel rail are you using to achieve that? Beyond that, can't help you with AEM stuff as I've never been their ECU/CAS combo.
    • Duncan
      RB26DETT Sketchy boost mod?

      By Duncan · Posted

      Manual boost controllers (where a little of the boost was bled off) were quite common back in the day, because they were cheap and easy. Generally they had a manual adjustment screw rather than being fixed like yours. Down side is they always bleed boost, not just when you want them to so an electronic boost controller that uses a solenoid will have less lag.
    • nash47
      Cas issue

      By nash47 · Posted

      Hello , im new here and i have A31 home build  RB25det neo stock eng / turbo  aem ems 2 blue connector  aem 3.5 map aem cas disk aem wideband connected to ecu  355 lph pump 550 nismo yellow injectors side feed aftermarket regulator  and won’t start with base aem tuner basic tune eventually flipped cas 180 degree so it triggers on correct stroke not in exhaust cycle  Now it won’t start Wideband reads 10 and 11 at lowest fuel setting  and will share calibrations soon for aem tuner i think something is wrong in aem tuner    please if you have any information, am very grateful         
×
×
  • Create New...