Jump to content
SAU Community

HKS Adjustable Cam Gears

ph1
 Share

Recommended Posts

whatsisname Grand Master

whatsisname

Posted
Posted

Even though you guys missed out on getting the gears, one small point to remember!

You can ONLY do the exhaust cam gear on the RB25DET due to the VVT on the inlet cam gear. It "MAY" be possible to modify or adapt the stock inlet gear or even the HKS one but it would be a bugga' to do it & not worth the cost for such a small gain ( around ~5rwkw max even on a full bolt on upgraded turbos etc... RB26DETT motor).

I gained roughly 10rwkw (so far) from doing the ext' gear (via 4' retard), I say so far as ECU issues caused problems @ dyno testing was unable to be completed :P

For anyone thinking of doing this mod I suggest waiting until you have a way of over coming the stock ECU's timing retard (the cause of the dreaded RB25DET flatspot) the adj' ext' gear only makes this problem much much worse :x you gain power but you get a very poor power curve (& the car will drive poorly).

Sorry to hijack the thread people, thought this info might help but.

two40 Grand Master

two40

Posted
Posted

Thanks for the heads up. Ethan 33 told me this just as I was going to order some from a local dealer.

Mot all 33's come out with VVT did they? The reason I ask is that my mechanic asked me what year my 33 was. He said that the late models have them but not the older ones. Weird.

whatsisname Grand Master

whatsisname

Posted
Posted

No prob's mate.

My GTS25t is a late '94 model & it's has VVT.

If you look @ the black t'belt/cam gear cover front on (ie standing @ the front of the car looking into the eng' bay) one side has the alloy crank angle sensor (exhaust cam gear) the other side has a bulge (inlet gear) the bulge is to clear the VVT gear. Just back from the inlet gear on the side of the eng' is a long housing with an elec connector on it, this it the VVT solenoid. The VVT is there to improve bottom end power NOT top end!!! (So I'm lead to believe!?!?!)

I'll see if I can dig up a pic with arrows pointing to the bits in ? :P

  • 1 month later...
  • 1 year later...
  • 5 weeks later...

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      new 1.5 LSD issues/concerns

      By GTSBoy · Posted

      A 1.5 way is a 2 way. It is just a 2 way with a less aggressive ramp on overrun.
    • GTSBoy
      Boost cut after swap(RB25DET NEO) R34

      By GTSBoy · Posted

      The ABS and/or TCS being missing/broken will not cause the engine to misbehave. It just casues CEL to come on and annoy you. The CEL is useless if it is always on, so you have to do the things you have to do to get rid of it, so it can be useful. Being a Stag ECU, then yes, it will not expect TCS to be present. But it will expect ABS to be present and working. You will need to either make the ABS CU talk to the ECU (don't ask me what that will take on an NA R34), and make sure the hardware is working....or, you just need to blank it out in Nistune. Do not persist with the stock ECU. You will just have problems. Gte it Nistuned. Start from there. DO YOU HAVE A BOOST SENSOR? The ECU's boost sensor that it. It is connected to the loom at the rear of the coil cover. Usually rides on the firewall on an R34, but is usually bolted down to a bracket along with all the other crap at the back of the coil cover when a Neo is dropped into another car. If you do not have it, the ECU will shit the bed. So, do you have one?
    • Kapr
      Boost cut after swap(RB25DET NEO) R34

      By Kapr · Posted

      So sadly the fuel pump etc was not it. The pump and filter is new and it is still cutting around 4000 rpm. A read something about ABS/TCS (engine is from stagea and ECU too so no TCS) and i dont know for 100% that my car has ABS. It has ABS "cube" in engine bay but i dont think it works(or at least from my braking experience). Can be something like that?  I will be driving the car next week to Nistune tuner to properly see what is wrong...  
    • JC71
      new 1.5 LSD issues/concerns

      By JC71 · Posted

      the Tomei LSD fluid with lsd kit. frustrated that it was shaking the car to crap and affecting everything else negatively, I pulled the diff last night, and removed the lsd carrier, could not find anything wrong, however it seem to be 100 locked up acceleration, and deacceleration, wondering if they sent me a 2 way not a 1.5??  either way I installed the stock open carrier back in place. test drove everything smooth as butter again. no shake, shutter, random, what felt like clutch slip and grab or drive shaft play, etc. something differently wrong in side the lsd. I might bother taking it apart (if possible) to figure out what's going on inside this carrier, as bought too long ago to return.  only draw back is its back to a one wheel wonder.
    • TurboTapin
      Most women will agree that parking is the most taxing part of driving

      By TurboTapin · Posted

      What a time to be alive!!
×
×
  • Create New...