Jump to content
SAU Community

Recommended Posts

Hello I did a search for cam gears on this forum and cant really find anything.

Are adjustable cam gears worth it on a rb20? Will it help with torque?

I have a stock rb20 with stock turbo. I have a full turbo back exhaust with sports cat, and a pod and return to stock piping fmic.

I am putting in a boost controller soon and possibily a rb25 turbo.

Edited by yoshiii335

Tiny benefit with everything stock, and therefore not worth the cost or effort.

Here's a suggestion for the turbo. Buy an RB20 turbo from someone in Australia (like on these forums, or Gumtree, or eBay, or whatever). It doesn't matter if it's broken, because you would get the seller to send it to Hypergear in Melbourne. He would highflow it for you and send it to you in Japan. Much better idea than running a ceramic turbo again (the RB25 turbo).

Tiny benefit with everything stock, and therefore not worth the cost or effort.

Here's a suggestion for the turbo. Buy an RB20 turbo from someone in Australia (like on these forums, or Gumtree, or eBay, or whatever). It doesn't matter if it's broken, because you would get the seller to send it to Hypergear in Melbourne. He would highflow it for you and send it to you in Japan. Much better idea than running a ceramic turbo again (the RB25 turbo).

How much does it cost to highflow it?

So adustable cam gears work when the boost is up?

Yes. They might be worth it.

Depending on what you consider worth it

You would have to spend time in the dyno to see what the engine wants.

What do you mean what the engine wants?

How much does it cost to highflow it?

So adustable cam gears work when the boost is up?

What do you mean what the engine wants?

Too many questions in too many threads.

Why do you not use tools like google to look up Hypergear and find out what his highflow service costs?

Adjustable cam gears on stock cams on an unopened motor will definitely give you SOME result. As Ben said. But the problem is that the result will likely be too small to justify the cost and effort when you could use the money and time more productively on other mods. What Ben means by "what the engine wants" is exactly that. You can really only find out where to set adjustable cam gears to get the result you're after (whether that's max top end power or a little more bite at the bottom at the expense of top end power) by adjusting them while at the dyno and doing runs to see what results you get. The result you get depends on what your engine is happy with, and that depends on what turbo you're running, how much boost that turbo might be making, etc.

But it's not simply a question of "do cam gears give you more when you have the boost wound up?" Really, the strict answer to that is yes, because when the boost is wound up everything gets bigger, including the size of changes from non-boost related mods. But, no, cam gears do not become more important as boost rises.

Too many questions in too many threads.

Why do you not use tools like google to look up Hypergear and find out what his highflow service costs?

Adjustable cam gears on stock cams on an unopened motor will definitely give you SOME result. As Ben said. But the problem is that the result will likely be too small to justify the cost and effort when you could use the money and time more productively on other mods. What Ben means by "what the engine wants" is exactly that. You can really only find out where to set adjustable cam gears to get the result you're after (whether that's max top end power or a little more bite at the bottom at the expense of top end power) by adjusting them while at the dyno and doing runs to see what results you get. The result you get depends on what your engine is happy with, and that depends on what turbo you're running, how much boost that turbo might be making, etc.

But it's not simply a question of "do cam gears give you more when you have the boost wound up?" Really, the strict answer to that is yes, because when the boost is wound up everything gets bigger, including the size of changes from non-boost related mods. But, no, cam gears do not become more important as boost rises.

Thanks I understand now.

How much does it cost to highflow it?

So adustable cam gears work when the boost is up?

To high flow it will cost you $850 including braided oil line. I do have a couple of different combinations, smaller profiles is more relatively more responsive then bigger combinations.

Power wise smallest profile can support 210rwkws with full boost around 3800RPMs, while the larger profiles can handle 240rwkws with full boost around 4500RPMs.

The adjustable cam gears helps a tinny bit of mid range. But not a very tangible amount using stock cam shafts.

To high flow it will cost you $850 including braided oil line. I do have a couple of different combinations, smaller profiles is more relatively more responsive then bigger combinations.

Power wise smallest profile can support 210rwkws with full boost around 3800RPMs, while the larger profiles can handle 240rwkws with full boost around 4500RPMs.

The adjustable cam gears helps a tinny bit of mid range. But not a very tangible amount using stock cam shafts.

I checked out your site, nice stuff. So stock full boost on the rb20 turbo is at 5600 rpm, so having a turbo come on full boost by 4500 is good, correct? Do you have an option to get me to 400hp with similar responses for street?

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

    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
    • Yeah, shame. Maybe  driver's carpet is available 🙏. I am waiting for both amayama and nangun to confirm.
×
×
  • Create New...